Bolthole Index

Harding County, New Mexico

Building permits, zoning and land rules in Harding County, New Mexico

33Index Score / 100
#24 of 33 in New Mexico

Building a home in Harding County, New Mexico requires the applicable construction permits before covered work begins.1 The New Mexico Construction Industries Division handles state building permits and inspections, while the New Mexico Environment Department handles septic systems.23 Ask the County Manager about parcel-specific zoning and land-use limits, which we could not confirm countywide.45

At a glance

Building permit
Required for covered work through state CID1
Building inspections
Required for permitted work6
Zoning
Countywide status not confirmed; ask the County Manager45
Septic
State permit and final inspection required78
Owner-builder
A conditional homeowner permit is available9
Tiny home
Permanent-foundation units may qualify under the state residential code10
RV living
Long-term private-land occupancy not confirmed45
Private well
State permit required before drilling11

Who to call

Building permits

New Mexico Construction Industries Division (CID) — Santa Fe Office

State building permits, plan review and inspections for construction under CID jurisdiction in Harding County

(505) 476-4700

2550 Cerrillos Road – 3rd Floor, Santa Fe, New Mexico 87505

Online permits →

Septic permits

New Mexico Environment Department — Liquid Waste Program

State onsite liquid-waste permit questions and routing to the appropriate field office for Harding County

505-827-2855

Online permits →

Planning & zoning

Harding County Manager

County contact for questions about parcel-specific zoning, floodplain administration, setbacks, RV occupancy and county-road access when no dedicated office is listed

575.673.2927

V.Villarreal@HardingCounty.org

35 Pine St./ PO Box 1002, Mosquero, NM 87733

Contact details are copied from each office’s official page and were checked against it on October 6, 2026.

Off-grid gear

Going off-grid in Harding County means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Harding County, New Mexico?

Yes. Buildings and covered electrical, plumbing, mechanical and LP-gas work in Harding County require the applicable permit before work begins unless a statute or rule provides an exception.1 New homes subject to state jurisdiction follow the New Mexico Residential Building Code.12

State residential inspections include foundation, slab or under-floor, frame, weather-resistive-barrier and final inspections; final trade inspections come before the final general-construction inspection.6 A covered building cannot be occupied until the appropriate inspector issues a certificate of occupancy or approves the final inspection.13 CID building fees depend on construction type, square footage, materials and project cost, so request a project-specific amount.14

Who issues Harding County building permits, and how do you reach them?

The New Mexico Construction Industries Division is the starting point for Harding County building permits because the county does not list its own building department.15 The CID Santa Fe office is at 2550 Cerrillos Road in Santa Fe and can be reached at (505) 476-4700; CID also provides online permit resources.16

A residential application identifies the property, owner, contractor, proposed use, work, materials and square footage, and it must include two complete plan sets.17 The qualifying contractor or homeowner signs the application, and zoning approval is required where the project is in an area that requires it.17 CID does not process the request until the fee is paid.18 Ask the Harding County Manager which local approval, if any, applies to the parcel before submitting the state package.5

Does Harding County have zoning?

We could not confirm whether Harding County has countywide zoning, and the county directory does not identify a zoning or planning department.4 New Mexico law allows counties to zone territory outside municipal zoning jurisdiction, but that authority does not establish that Harding County adopted a zoning ordinance.19

Harding County does have current subdivision regulations on file, although the available record does not provide the operative rules or application steps.20 Before relying on a parcel for a house, land division, accessory dwelling, manufactured home or temporary camp, ask the Harding County Manager about zoning, subdivision approval, setbacks, floodplain review and any municipal jurisdiction.5 We could not confirm countywide minimum-home-size, setback, height or lot-coverage rules.4

How do septic permits work in Harding County?

The New Mexico Environment Department administers onsite wastewater permits in Harding County.3 Submit a complete application and supporting documents to the appropriate NMED field office; after approval and payment, NMED issues a Permit to Construct.7 Start with the Liquid Waste Program at 505-827-2855 and ask which field office serves the parcel.21

Request the inspection at least 48 hours, or two business days, ahead and do not cover the system before inspection.8 NMED issues a Permit to Operate after an approved final inspection.8 Published septic fees vary by system type and design flow, so obtain the applicable fee with the approval notice.22 Only 33.3% of mapped county soils avoid a “very limited” rating for conventional drain fields, making septic feasibility a useful purchase contingency.23

Can you live in an RV or tiny home on land in Harding County?

We could not confirm a Harding County rule for temporary or long-term RV occupancy on private land, so ask the County Manager about the parcel and intended duration before moving an RV onto it.45 A tiny house on a permanent foundation may be occupied as a dwelling when it provides complete living facilities, complies with the New Mexico Residential Code and passes inspection.10

New Mexico's covered tiny-house format is no more than 400 square feet excluding lofts; a unit on a chassis with a permanent axle is treated as an RV.10 Removing the axles and placing the unit on supports or a foundation triggers permanent-foundation tiny-house requirements.10 Either route still requires septic approval where onsite wastewater is used and the applicable building permits for covered construction.71

Building a home in Harding County: what are the steps?

  1. Ask the Harding County Manager about zoning, subdivision review, setbacks, floodplain administration and county-road access.4205
  2. Confirm legal access; direct access to a New Mexico state highway requires a state access permit before construction or modification.24
  3. If drilling a well, obtain a permit from the New Mexico Office of the State Engineer before drilling.11
  4. Submit the septic application to NMED and obtain the Permit to Construct before installation.7
  5. Prepare the state building application and two complete plan sets, secure any required zoning approval and pay the permit fee.1718
  6. An owner-builder must sign and notarize the responsibilities form; licensed subcontractors separately permit their work, and an owner performing trade work must pass the required examination.9
  7. Complete the required inspections before occupancy.613

What should you check before buying land in Harding County?

Water and septic deserve early due diligence in Harding County: annual precipitation averages 15.6 inches, and severe drought occurs in 45.3% of measured years.2526 A new well needs an Office of the State Engineer permit before drilling, and the state materials specify separation distances from other wells and septic components.11 Make the purchase conditional on an acceptable septic site because only 33.3% of mapped soils avoid severe conventional drain-field limits.23

Confirm legal access and determine whether the driveway connects to a state highway, which requires a state access permit.24 Ask the Harding County Manager about subdivision restrictions and the correct floodplain administrator.205 Development in a FEMA Special Flood Hazard Area requires local floodplain approval.27

Watch-outs

  • Do not treat the absence of a listed county planning department as proof that a Harding County parcel has no zoning, setbacks or recorded land-use restrictions; ask the County Manager.45
  • A building-permit exemption does not automatically waive separate electrical, plumbing or mechanical permits.28
  • A permanent-foundation tiny house and an RV are treated differently under New Mexico's building code, while long-term RV occupancy in Harding County remains unconfirmed.104
  • Do not cover a septic system before the required NMED inspection, and request the inspection at least 48 hours or two business days ahead.8
  • Harding County has current subdivision regulations on file, but the operative requirements and application steps were not available; ask the County Manager before dividing land.205

Sources

  1. 14.5.2 NMAC — Permits, quoted and re-checked
  2. 14.6.5 NMAC — Inspectors and Building Officials (New Mexico statewide rule), quoted and re-checked
  3. Environmental Health Bureau, quoted and re-checked
  4. Harding County Departments (2026 county census)
  5. Harding County Manager (hardingcounty.org)
  6. Building Permit Guide for Residential Construction, quoted and re-checked
  7. Liquid Waste Permitting Process, quoted and re-checked
  8. Liquid Waste Permitting Process, quoted and re-checked
  9. Building Permit Guide for Residential Construction, quoted and re-checked
  10. 14.7.3 NMAC — 2021 New Mexico Residential Building Code (New Mexico statewide rule), quoted and re-checked
  11. Drilling your water well, quoted and re-checked
  12. Rules, Laws, and Building Codes, quoted and re-checked
  13. 14.5.3 NMAC — Inspections, quoted and re-checked
  14. Construction Industries Forms and Applications Fees, quoted and re-checked
  15. Harding County Departments (2026 county census)
  16. New Mexico Construction Industries Division (CID) — Santa Fe Office (rld.nm.gov)
  17. Building Permit Guide for Residential Construction, quoted and re-checked
  18. Construction Industries Division Frequently Asked Questions, quoted and re-checked
  19. nmlegis.gov (New Mexico statewide rule), quoted and re-checked
  20. County Subdivision Regulations, quoted and re-checked
  21. New Mexico Environment Department — Liquid Waste Program (env.nm.gov)
  22. Apply for a Permit — Onsite Wastewater Program, quoted and re-checked
  23. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  24. 18.31.6 NMAC (New Mexico statewide rule), quoted and re-checked
  25. Annual precipitation: Bolthole Index county data
  26. Share of years in severe drought: Bolthole Index county data
  27. Flooding (New Mexico statewide rule), quoted and re-checked
  28. Building Permit Guide for Residential Construction (New Mexico statewide rule), quoted and re-checked

Written October 6, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Like all 6 of its neighbors, Harding County requires a building permit for a home.

RuleHarding CountyUnion CountyQuay CountySan Miguel CountyMora CountyColfax CountyGuadalupe County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningNot publishedNot publishedNoYesYesYesNot published
Septic permitsNM Env. Dept.NM Env. Dept.NM Env. Dept.NM Env. Dept.NM Env. Dept.NM Env. Dept.NM Env. Dept.

County locator

Harding County in New Mexico

33
County map
Harding County highlighted among the New Mexico counties · colored by Index score

How Harding County scores

Seclusion89100% ev.
Self-Sufficiency1196% ev.
Admin Boringness4868% ev.
Durability34100% ev.
Property Autonomy38100% ev.
Carry Cost8696% ev.

Evidence strength: 93%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$87kTypical home
0.4%Property tax
$447Land / acre
15.6"Annual rain
45.3% of yrsSevere drought
13 / yr (+11.2)Mid-century 100°F days
32.8 daysMid-century dry spell
1.07" (+0.2%)Mid-century 1-day rain
1.25×Wildfire change factor
100%Forward climate coverage
$2,017Home insurance / yr
1.5% / yrInsurance growth
1.54%Nonrenewal rate
single ZIP shrunk to state medianInsurance basis
181Radius comparison (15 mi)
0.3People / sq mi
5.3%Federal land
89.5%Land at 15% slope or less
33.3%Soils rated "not limited" for septic (strict USDA rating)
452,893 acWorkable land screen
3.1%Wooded land
4.2 tonsBiomass / forest ac
54.7°FAvg temp

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Cities and towns in Harding County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Village of Mosquero · Village of Roy

Answers from the rulebook for Harding County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Harding County rules

  • Subdividing landRegulated (with conditions)

    Subdivision of land within Harding County under Harding County subdivision regulations.

    • The State Records Center and Archives page identifies the status code C as Current.
    • The page was filed or updated May 1, 2018.
    • The listed Harding County regulations were filed by the County Clerk on May 30, 1997 and comprise 134 pages/sheets.
    “Harding | 6/25/1997 | Harding County Subdivision Regulations. (Filed by County Clerk 05-30-97). 134 pages/sheets, | C”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision of land in Harding County.
      “Harding | 6/25/1997 | Harding County Subdivision Regulations. (Filed by County Clerk 05-30-97). 134 pages/sheets, | C”

New Mexico rules that apply here

  • Building permitRequired

    Buildings and structures regulated by the New Mexico Residential Code, including residential construction, alterations, repairs, additions, moves, improvements, removals, conversions, and demolitions, and state-administered commercial construction.

    • A permit must be obtained before covered work begins.
    • Residential exceptions include one-story detached accessory buildings used as tool or storage sheds, playhouses, and similar uses not exceeding 120 square feet; fences not over 6 feet high; specified retaining walls; certain water tanks, sidewalks, driveways, finish work, shallow prefabricated pools, playground equipment, window awnings, and detached decks.
    • Unless otherwise exempted, separate plumbing, electrical, and mechanical permits may still be required for otherwise exempted residential work.
    • Commercial applicants must be validly licensed with the appropriate license classification, submit the state building permit application, obtain any required city or county zoning approval, and pay the valuation-based fee before permit issuance.

    residential accessory-building exemption floor area: <= 120 square feet (One-story detached accessory buildings used as tool and storage sheds, playhouses, and similar uses.) · fence exemption height: <= 6 feet · water-tank exemption capacity: <= 5000 gallons (Height-to-diameter or width ratio must not exceed 2:1.) · detached-deck exemption area: <= 200 square feet (Deck must not be more than 30 inches above grade, must not be attached to a dwelling, and must not serve the required exit door.)

    “Except as specified in Section 105.2 IRC, no building or structure regulated by this code shall be erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted, or demolished unless a permit has first been obtained from the building official.”
    2 more reviewed findings on this topic
    • Required — Buildings, structures, and specified electrical, plumbing, mechanical, and LP-gas work in Harding County subject to CID jurisdiction.
      “Subject to the Construction Industries Licensing Act “CILA”, Sections 60-13-3 and Section 60-13-45 NMSA 1978, and its rules, no building or structure shall be erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted or demolished, no electrical wiring, plumbing or mechanical work or LP gas work as defined and described in the applicable New Mexico construction codes for those trades, may be installed, repaired, altered or maintained in or on such building or structure, unless the applicable permit has first been obtained from the appropriate AHJ, unless otherwise provided by statutes or rule.”
    • Required — Building, electrical, plumbing, mechanical, and LP-gas work in Harding County subject to CID jurisdiction.
      “no building or structure shall be erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted or demolished [...] unless the applicable permit has first been obtained from the appropriate AHJ, unless otherwise provided by statutes or rule.”
  • Owner-builder exemptionConditional

    A New Mexico property owner constructing or altering the owner’s single-family primary residence, including permitted appurtenant structures, under a homeowner’s permit.

    • The exemption is limited to construction or alteration of the owner’s primary residence; other use cancels the current permit and can result in denial of later homeowner permits.
    • The homeowner must comply with CILA, NMAC rules, applicable standards and codes, and may act as the general contractor only when the major portion of the work, based on dollar amount, is completed by the homeowner.
    • A permit is required for all construction-related work for which a permit is required by statute or rule; the rule does not exempt the owner-builder from state permitting or inspections.
    • Homeowner permits are limited to single-family dwellings and appurtenant structures such as private garages, carports and sheds, require proof of ownership, and are subject to AHJ approval.
    • The application requires an AHJ-approved application, signed and notarized responsibility sheet, acknowledgement of the homeowner-permit instructions, local zoning approval, floodplain determination, proof of identity and ownership, and payment of required fees.
    • Separate homeowner permits may be issued for general building construction, mechanical/plumbing and electrical work; each is limited to the primary residence and does not apply to rental property, other owned property, or commercial work or property.
    • The homeowner is responsible for requesting inspections, correcting code violations, and requesting re-inspections for a certificate of occupancy or final inspection. Subcontractors remain responsible for permits, inspections and corrections for plumbing, mechanical and electrical work they perform.
    • The homeowner may perform authorized work personally or with W-2 employees, or subcontract part of the work while self-performing a significant portion. Subcontracted work must be performed by licensed contractors who obtain their own permits and pass required inspections.
    • A homeowner permit is invalid for a project managed, supervised or acted on as general contractor by a GB-2 or GB-98 contractor; that contractor must obtain the appropriate permits and assumes responsibility for the site work.
    • Single-scope projects such as roofing or window installation are ineligible when subcontracted and not performed by the homeowner or valid W-2 employees.
    • Plumbing requires sufficient knowledge as determined by the TBC or CBO; a written examination with a minimum passing score of 75% may be required, failed examinations may not be repeated sooner than 30 days, and permitted plumbing work must be performed by the permittee.
    • Electrical work requires approved plans or drawings and a CID homeowner electrical exam with a minimum passing score of 75%; failed examinations may not be repeated sooner than 30 days, and permitted electrical work must be performed by the permittee.
    • A homeowner permit may not be issued for HVAC, natural gas or LP gas installations. HVAC and natural-gas work requires a properly licensed contractor and AHJ permitting and inspection; LP-gas work requires a properly licensed contractor and permitting and inspection through the LP gas trade bureau.
    • A homeowner-permit project may not be placed on the market for sale while under construction; doing so automatically voids the permit and may lead to unlicensed-contracting charges.
    • No more than one homeowner permit for a single-family dwelling may be issued to the same property owner within any 12-month period.
    • The cited rule section states an adoption/replacement date of March 10, 2022.

    homeowner electrical exam minimum passing score: >= 75 percent (Required after plan approval for issuance of a homeowner electrical permit.) · homeowner plumbing exam minimum passing score: >= 75 percent (The TBC or CBO may require the written examination.) · failed homeowner exam retest interval: >= 30 days (Failed plumbing and electrical examinations may not be repeated sooner.) · homeowner permits per single-family dwelling and property owner: <= 1 per 12 months

    “A homeowner permit allows homeowners to obtain permits for constructing or altering their primary residence without becoming a licensed contractor is strictly limited to construction and alteration of their primary residence. Any other use of a homeowner’s permit shall result in cancellation of the current homeowner permit and denial of any subsequent request for a homeowner permit. The homeowner licensing exemption requires conformity with CILA, its rules, standards and codes. This includes a homeowner acting as a general contractor for the project. The homeowner’s permit authorizes the homeowner to physically perform the work, alone or with legal employees, or act as a general contractor and subcontract portions of the work to licensed contractors. In order to qualify for the homeowner permit the major portion of the work to be performed, based on dollar amount, must be completed by the homeowner. A homeowner’s permit may only be issued to a property owner and only for the property owner’s primary residence occupied or intended to be occupied by the homeowner.”
    2 more reviewed findings on this topic
    • Available (with conditions) — Residential property owners seeking a New Mexico homeowner’s construction permit in Harding County.
      “Provided however, a homeowner’s permit may be issued to a residential property owner subject to the limitations of 14.5.2.18 NMAC and an annual permit is provided as noted in 14.5.2.19 NMAC.”
    • Conditional — Homeowner construction permits for residential work in Harding County.
      “The homeowner must also sign and notarize”
  • Building code adoptedAdopted (with conditions)

    Commercial construction, alteration, relocation, enlargement, replacement, repair, equipment, use and occupancy, location, removal, and demolition of buildings or structures in New Mexico subject to the jurisdiction of the Construction Industries Division.

    • The 2021 New Mexico Commercial Building Code applies on or after July 14, 2023.
    • The rule does not apply when performed pursuant to a permit for which an application was received by CID before July 14, 2023.
    • Detached one- and two-family dwellings and multiple single-family dwellings (townhouses) not more than three stories high with separate means of egress, and their accessory structures, must comply with the 2021 New Mexico Residential Building Code instead.
    • Existing buildings not subject to the residential code undergoing a change of occupancy, repair, alteration, or addition must comply with either the commercial building code or the existing building code, as applicable.
    • The rule adopts the 2021 International Building Code by reference, as amended by the rule.

    effective date: 2023-07-14 (unless a later date is cited at the end of a section) · adopted reference code: 2021 International Building Code (as amended by 14.7.2 NMAC)

    “14.7.2.5 EFFECTIVE DATE: July, 14, 2023, unless a later date is cited at the end of a section. [...] 14.7.2.8 ADOPTION OF THE 2021 INTERNATIONAL BUILDING CODE: A. This rule adopts by reference the 2021 International Building Code, as amended by this rule.”
    4 more reviewed findings on this topic
    • Adopted (with conditions) — Construction subject to the New Mexico Construction Industries Division in Harding County.
      “The General Building Bureau adopts and enforces building codes that provide structural strength, means of egress from facilities, stability of structures, sanitation, light and ventilation, energy conservation, affordability and safety of life and property from fire and other hazards attributed to the built environment.”
    • Adopted (with conditions) — State building codes applicable to residential and commercial construction in Harding County.
      “2021 New Mexico Residential Building Code NMAC 14.7.3”
    • Adopted (with conditions) — Detached one- and two-family dwellings, multiple single-family dwellings (townhouses) not more than three stories high with separate means of egress, and their accessory structures in New Mexico subject to the jurisdiction of the Construction Industries Division.
      “14.7.3.5 EFFECTIVE DATE: July 14, 2023, unless a later date is cited at the end of a section. From the date of publication of this rule in the New Mexico register, until December 14, 2023, permits may be issued under either the previously adopted rule, or this rule. After December 14, 2023, permits may be issued only under this rule. [...] A. This rule adopts by reference the 2021 International Residential Code, as amended by this rule.”
    • Adopted — Residential construction in New Mexico subject to the jurisdiction of the Construction Industries Division, including detached one- and two-family dwellings, qualifying townhouses, and their accessory structures.
      “This rule adopts by reference the 2021 International Residential Code, as amended by this rule.”
  • InspectionsRequired

    State-administered residential and commercial construction requiring building permits.

    • Residential inspections include foundation, concrete slab or under-floor, frame, weather-resistive barrier, and final inspection.
    • Final electrical, plumbing, and mechanical inspections must occur before the final general construction inspection.
    • The building official or Construction Inspector may require additional inspections to establish compliance with the New Mexico Building Code and other enforced laws.
    • Inspection requests require the permit number, inspection type, requestor contact information, and confirmation that work is complete and the permit is affixed near the front exterior door.
    “REQUIRED INSPECTIONS To request an inspection e-mail us at CID.lnspection@state.nm.us or call 505-222-9813 or 877-243-0979”
    2 more reviewed findings on this topic
    • Required — Construction subject to CID inspection requirements in Harding County.
      “No C/O shall be issued by the CBO or the inspector until all of the required inspections have been performed and the appropriate inspectors have approved the work.”
    • Required — State CID inspections for residential construction subject to the New Mexico building code in Harding County.
      “REQUIRED INSPECTIONS To request an inspection e-mail us at CID.lnspection@state.nm.us or call 505-222-9813 or 877-243-0979 1. FOUNDATION INSPECTION. To be made after excavations for footings are complete and any required reinforcing steel is in place.”
  • Certificate of occupancyRequired

    Buildings or portions of buildings on which construction has been undertaken and that are subject to CID jurisdiction.

    • Occupancy requires a certificate of occupancy or approved final inspection, as applicable.
    • A certificate of occupancy cannot issue until required inspections are completed and approved.
    • Temporary certificates may be issued for 30 days or longer when the AHJ determines they are appropriate and life, safety, and health will not be adversely affected; extensions may reach a maximum of 12 months.
    “No building, or portion thereof, on which construction has been undertaken shall be occupied until the appropriate inspector has issued a C/O or an approved final inspection, as applicable.”
  • Building heightSpecified

    Detached one- and two-family dwellings, multiple single-family dwellings (townhouses) with separate means of egress, and their accessory structures subject to the New Mexico Construction Industries Division residential code.

    • The cited residential code applies to construction performed in New Mexico on or after December 14, 2023.
    • The construction must be subject to the jurisdiction of the Construction Industries Division.
    • The code scope is limited to dwellings and townhouses not more than three stories high; construction outside the NMRBC scope may be subject to the New Mexico Commercial Building Code.
    • The rule states an effective date of July 14, 2023, with permits issuable under either rule until December 14, 2023, and only under the new rule after December 14, 2023.

    maximum stories within NMRBC scope: <= 3 stories (The provision describes the scope of the residential code and is not a general zoning-height limit for every land use.)

    “dwellings and multiple single-family dwellings (townhouses) not more than three stories high with separate means of egress”
  • Tiny homesAllowed (with conditions)

    Tiny houses used as single dwelling units with complete independent living facilities and placed on a permanent foundation statewide in New Mexico.

    • The unit must provide permanent provisions for living, sleeping, eating, cooking, and sanitation.
    • The tiny house must comply with the New Mexico Residential Code and Appendix AQ.
    • Tiny houses constructed in New Mexico or transported into New Mexico must be inspected for compliance with New Mexico Residential Code requirements.
    • A tiny house on a chassis with a permanent axle is treated as a recreational vehicle and must meet recreational-vehicle codes and licensing requirements while the axle remains in place.
    • If axles are removed and the unit is placed on supports or a foundation, it must comply with the code requirements for tiny houses on a permanent foundation.
    • The rule applies to construction, use, and occupancy subject to the jurisdiction of the Construction Industries Division; construction not addressed in the residential code must comply with the New Mexico Commercial Building Code.

    maximum floor area excluding lofts: <= 400 square feet (The definition excludes loft area and excludes recreational vehicles.) · minimum habitable-space and hallway ceiling height: >= 6 feet 8 inches (Loft ceiling heights may be lower.) · minimum bathroom, toilet-room, and kitchen ceiling height: >= 6 feet 4 inches (None stated in the cited passage.)

    “This appendix shall be applicable to tiny houses used as single dwelling units providing complete independent living facilities for one or more persons”
  • Manufactured homesAllowed (with conditions)

    Installation and resulting residential use and occupancy of new or pre-owned manufactured homes statewide in New Mexico, subject to the Manufactured Housing Division's permitting and inspection rules.

    • An installation permit or combined installation and permanent-foundation inspection permit must be obtained before installation.
    • The permit must identify the licensees performing installation work and the consumer's name and address; a map is required when the address is a post-office box or rural route.
    • An unlicensed homeowner working on the homeowner's own principal residential property must perform the work personally or use division-approved licensees, execute the required acknowledgment, and assume responsibility for applicable federal, state, local, code, and inspection requirements.
    • Final inspection must certify that the manufactured home meets the minimum standards for use and occupancy under the act and regulations.
    • Permits are valid for 180 days, subject to possible time extension for weather or re-manufacturing or permanent-foundation inspections.
    • Each new or pre-owned manufactured home installed in New Mexico requires an installation permit.
    • Failure to obtain a permit subjects the homeowner, dealer, or installer to a fine of double the permit fee.
    • Local requirements, codes, and inspections still apply; the cited state rule does not establish local land-use placement or zoning permission.

    installation permit validity: 180 days (A time extension may be granted for weather-related delay or inspections involving a home being re-manufactured or installed on a permanent foundation.) · permit for certain alteration, modification, or repair: 15 USD (Available upon written request and excludes warranty work performed under a previous permit and installation.) · fine for installation without permit: double the permit fee (Applies to the homeowner, dealer, or installer.)

    “inspectors shall certify on the permit, or upon any inspection report, that the manufactured home meets the minimum standards for use and occupancy”
  • Who permits septicState

    On-site liquid waste systems and effluent receiving 5,000 gallons or less per day and not requiring a discharge plan or NPDES permit.

    • 20.7.3 NMAC identifies the New Mexico Environmental Improvement Board as the issuing agency and defines the department as the New Mexico Environment Department.
    • More stringent city or county requirements may also apply.

    maximum regulated flow: <= 5000 gallons per day (Systems requiring a discharge plan under 20.6.2 NMAC or an NPDES permit are outside this part.)

    “20.7.3.1 ISSUING AGENCY: New Mexico Environmental Improvement Board.”
    2 more reviewed findings on this topic
    • State — On-site wastewater and septic regulation in Harding County.
      “Bernalillo County is the only county in New Mexico that has its own onsite wastewater ordinance. Bernalillo County Wastewater Ordinance applies only to unincorporated portions of Bernalillo County. Incorporated portions of Bernalillo County are regulated by NMED and include Tijeras, Los Ranchos de Albuqerque and the City of Albuquerque.”
    • State — Onsite wastewater and septic systems in Harding County.
      “The Environmental Health Bureau (EHB) regulates food facilities and food manufacturers, onsite wastewater systems (septic systems), and all public aquatic venues in New Mexico.”
  • Septic permitRequired

    Installation or modification of a new or existing on-site liquid waste system, including residential or commercial units on lots for which such a system is required.

    • A permit issued by the New Mexico Environment Department, including payment of the permit fee, is required before construction or modification.
    • A permit is not required for graywater discharges or systems meeting 20.7.3.810 NMAC.
    • A dwelling may not be constructed, modified, or transported onto a lot requiring an on-site liquid waste system unless the department has issued the permit beforehand.
    • Other state, city, county, or federal approvals may also be required.
    • The department generally acts within 10 working days after a completed conventional-system application, subject to the rule's extension for potentially more stringent requirements.

    maximum regulated flow: <= 5000 gallons per day (20.7.3.2 NMAC scope limitation) · permit application completeness determination: 5 working days (Conventional systems) · conventional permit decision: 10 working days (After receipt of a completed application; review may extend to 20 working days when more stringent requirements may be necessary)

    “No person shall install or have installed a new on-site liquid waste system or modify or have modified an existing on-site liquid waste system, unless that person obtains a permit issued by the department, including payment of the permit fee, prior to construction of such installation or modification.”
    One more reviewed finding on this topic
    • Required — Installation, modification, or construction of an individual liquid waste system in Harding County.
      “a Permit to Construct (PtC) will be issued”
  • Septic inspectionLimited

    Property transfers involving property with an established on-site liquid waste system, subject to the applicable local exception for unincorporated Bernalillo County.

    • Before transfer, the transferor must have the established on-site liquid waste system evaluated.
    • The evaluation must be performed by an evaluator qualified under 20.7.3.904(B) using a department-approved form.
    • Unpermitted systems must be registered under 20.7.3.401(J) or permitted under 20.7.3.401(K).
    • Evaluators must submit copies of evaluation reports, whether completed or not, to the department within 15 days.
    • A permit or variance application must be submitted within 15 days of the evaluation to correct deficiencies or permit violations identified by the evaluation.
    • Advanced treatment systems and holding tanks have additional ownership-transfer, maintenance-contract, sampling, and permit-amendment requirements.
    • An inspection or evaluation performed within the prior 180 days may support an extension request if the permitted system has not been used since that inspection or evaluation.

    evaluation-report submission deadline: 15 days (Evaluators must submit copies of all reports, whether completed or not) · permit or variance application deadline after evaluation: 15 days (Applies when correcting deficiencies or permit violations identified by the evaluation) · possible evaluation extension lookback: 180 days (The system must not have been in use since the inspection or evaluation)

    “Prior to the transfer of a property with an established on-site liquid waste system, the transferor of the property shall have the system evaluated. Liquid waste systems shall be evaluated by an evaluator qualified in accordance with Subsection B of 20.7.3.904 NMAC utilizing a department approved form.”
    2 more reviewed findings on this topic
    • Required — Onsite liquid-waste installations performed by qualified homeowners in Harding County.
      “Before covering the system – Final inspection (required) All Homeowner installations require an NMED final inspection. Remember to schedule your inspection times with your local field office two or three days in advance.”
    • Required — Permitted on-site wastewater systems in Harding County.
      “Do not cover the system before inspection.”
  • Off-grid sanitationLimited

    Privies, permitted on-site liquid waste systems, and qualifying private residential graywater discharges statewide.

    • A privy may dispose of human excreta and toilet paper but not other liquid wastes.
    • Untreated liquid waste must go to a permitted and approved enclosed system, permitted and approved treatment unit, or public sewer, except qualifying graywater.
    • Graywater under 250 gallons per day may be used for household gardening, composting, or landscaping irrigation only if all listed conditions are met, including no runoff, no spraying, no watercourse discharge, floodway exclusion, five-foot groundwater separation, local ordinance compliance, 24-hour storage limit, and specified well setbacks.
    • Graywater use for purposes other than irrigation or composting requires a department permit.

    private residential graywater discharge: < 250 gallons per day (Qualifying graywater discharge under 20.7.3.810 NMAC) · graywater setback from private domestic well: >= 100 feet · graywater setback from public water supply well: >= 200 feet · graywater storage before discharge: <= 24 hours

    “A privy may be used for the disposal of human excreta and toilet paper, but not for the disposal of other liquid wastes.”
  • Well permitRequired

    Water wells drilled in Harding County.

    • Before drilling, a permit to drill must be obtained from the New Mexico Office of the State Engineer.
    • If the groundwater source is unclear, an exploratory permit may first be obtained; if the exploratory well produces water, a permit to use the water is then required.
    • The brochure states that a new domestic well must be at least 50 feet from an existing well owned by another person.
    • NMED setback distances listed in the brochure include 50 feet from a septic tank, 100 feet from a drain field or first opening in a leach line, 100 feet from a seepage pit, and 50 feet from a sewer line.
    • A well driller must file a complete Well Record with OSE no later than 20 days after drilling completion.

    domestic well setback from another person's existing well: >= 50 feet · domestic well setback from septic tank: >= 50 feet · domestic well setback from drain field or first opening in leach line: >= 100 feet · domestic well setback from seepage pit: >= 100 feet · domestic well setback from sewer line: >= 50 feet

    “Before you have a well drilled, you must first obtain a permit to drill from the Office of the State Engineer. If the source of groundwater is unclear, you may first acquire an exploratory permit. If that well produces water, you can then obtain the permit to use the water.”
  • Mandatory utility hookupConditional

    Residential and commercial units using an on-site liquid waste system when a public sewer is available and connection is required by the local authority with jurisdiction.

    • A public sewer is deemed available when it has capacity and is located in a thoroughfare, right-of-way, or easement abutting the lot.
    • The on-site system must be properly abandoned within 30 days after connection.
    • The state rule does not itself identify which local authority will require connection.

    abandonment deadline after sewer connection: 30 days

    “All residential and commercial units utilizing an on-site liquid waste system shall connect to a public sewer upon availability and if required in accordance with the local authority that has jurisdiction.”
  • Agricultural exemptionConditional

    Statewide agricultural exemption from the New Mexico Subdivision Act for the sale, lease, or other conveyance of a parcel of at least 35 acres.

    • The parcel must be thirty-five acres or larger.
    • The conveyance must occur within a twelve-month period covered by the statutory exception.
    • The land must have been used primarily and continuously for agricultural purposes, in accordance with Section 7-36-20 NMSA 1978, for the preceding three years.

    minimum parcel size: >= 35 acres · agricultural use duration: >= 3 years (land must have been used primarily and continuously for agricultural purposes in accordance with Section 7-36-20 NMSA 1978) · conveyance period: 12 months (within any twelve-month period)

    “the sale, lease or other conveyance of any parcel that is thirty-five acres or larger in size within any twelve-month period; provided that the land has been used primarily and continuously for agricultural purposes, in accordance with Section 7-36-20 NMSA 1978, for the preceding three years;”
    2 more reviewed findings on this topic
    • Conditional — New Mexico contractor licensing requirements for earthmoving, excavating, and ditching activities used in preparation or production of agriculture or maintenance of livestock on a farm or ranch.
      “earthmoving, excavating and ditching activities applicable to the preparation and production of agriculture or maintenance of livestock on a farm or ranch are exempt from licensing requirements.”
    • Conditional — Agricultural land divisions and conveyances that would otherwise fall within the New Mexico Subdivision Act definition.
      “provided that the land has been used primarily and continuously for agricultural purposes, in accordance with Section 7-36-20 NMSA 1978”
  • Driveway accessRequired

    Permanent or temporary direct vehicular access from property in close proximity to or adjoining a New Mexico state highway.

    • An access permit must be issued by the New Mexico Department of Transportation before constructing or modifying covered access.
    • Access permits are issued only when the application complies with 18.31.6 NMAC.
    • The department or an approved issuing authority may impose terms and conditions.
    • The rule concerns state highways under the jurisdiction of the state transportation commission; it does not establish a universal permit requirement for every non-state roadway.
    • For additional traffic from expansion or redevelopment, the property owner must contact the department to determine whether a new application or access modification is required; no new application is required if the department determines modifications are unnecessary.
    “no person shall construct or modify any permanent or temporary access [...] without an access permit issued by the New Mexico department of transportation.”
  • Building in a floodplainRequired

    Construction or development within a FEMA Special Flood Hazard Area in a New Mexico community, and proposed construction or other development in communities where FEMA has not defined a Special Flood Hazard Area.

    • Approval by the local community Floodplain Administrator is required before construction or development within any Special Flood Hazard Area.
    • Where FEMA has not defined the Special Flood Hazard Area, the community must require permits for all proposed construction or other development, including manufactured homes, to determine whether the activity is in a flood-prone area.
    • Approval is intended to ensure compliance with the National Flood Insurance Program and the community’s floodplain management ordinance.
    • The source identifies 104 New Mexico communities participating in the National Flood Insurance Program; the administering official is the applicable local community Floodplain Administrator, not the state agency.
    “Approval by the local community Floodplain Administrator is required before construction or development begins within any Special Flood Hazard Area.”
  • Permit feesPublished (with conditions)

    New Mexico onsite-wastewater permits and related certifications applicable in Harding County.

    • Fees vary by system type and design flow.
    • The fee schedule page states the fees are effective July 1, 2020, with a separate July 1, 2021 date for the septage pumping truck annual registration fee.
    • Payment is due only after NMED provides notice of approval or approval with conditions.

    conventional system design flow up to 1000 gpd: 225 USD (effective 2020-07-01) · conventional system design flow 1001 to 2000 gpd: 325 USD (effective 2020-07-01) · conventional system design flow 2001 to 5000 gpd: 500 USD (effective 2020-07-01) · re-inspection fee: 125 USD (effective 2020-07-01)

    “Conventional system, register, construct, or modify design flow up to 1,000 gpd | 7/1/20 | $225.00”
    2 more reviewed findings on this topic
    • Variable (with conditions) — CID general-building permits for projects in Harding County.
      “Permitting Fees are based upon type of construction, square footage, type of materials and construction costs.”
    • Variable (with conditions) — New Mexico Construction Industries Division permitting fees for covered construction work statewide.
      “Permitting Fees are based upon type of construction, square footage, type of materials and construction costs.”
  • Permit processPartial

    State building-permit process used for applicable construction in Harding County.

    • County planning and zoning approval must accompany the homeowner permit request.
    • Two complete sets of plans and the Multi-Purpose State Building Application are required.
    • The permit fee must be paid before CID processes the request.
    • CID states a complete permit package will be issued within five working days.
    • Residential permits are described as being processed in three to four working days; commercial permits in five to ten working days.

    stated complete-package issuance time: 5 working days · stated residential processing time: 3 to 4 working days · stated commercial processing time: 5 to 10 working days

    “Permits are processed by the date they are received. Residential permits are being processed in 3 to 4 working days. Commercial permits are processed in 5 to 10 working days.”
    3 more reviewed findings on this topic
    • Published (with conditions) — CID residential building-permit applications for projects in Harding County.
      “Without the permit fee being paid, CID will not process the permit request. Upon receipt of the complete permit package CID will enter, review, and approve the permit request and issue a building permit within five (5) working days.”
    • Published (with conditions) — Residential building permit application process applicable to construction in Harding County.
      “Two complete sets of plans at 1/4" = 1 '-0 minimum with dimensions, on at least 8 ½ "x 1 1" paper is required and will provide the following Information:”
    • Published (with conditions) — Construction Industries Division permit applications in New Mexico.
      “Permits can also be completed using our online permitting portal.”
  • county zoning authorityGeneral

    New Mexico counties adopting zoning for all or part of unincorporated territory outside municipal zoning jurisdiction.

    • A county zoning ordinance may apply only to territory not within the zoning jurisdiction of a municipality.
    • Municipalities may have concurrent extraterritorial zoning authority in specified areas, including areas near municipalities meeting statutory population thresholds and additional contiguous territory placed under municipal extraterritorial jurisdiction by county-municipal agreement.
    • Concurrent extraterritorial authority is exercised under an extraterritorial zoning authority or joint powers agreement and may be exercised regardless of whether the county has enacted a comprehensive zoning ordinance.
    • If no county zoning ordinance exists, qualified electors may petition for adoption; the petition must equal at least twenty-five percent of the votes cast for governor at the last preceding general election, and the board of county commissioners must adopt a county zoning ordinance within one year.

    minimum petition threshold: >= 25 percent of votes cast for governor at the last preceding general election · county ordinance adoption deadline after qualifying petition: 1 year

    “a county zoning authority may adopt a zoning ordinance applicable to all or any portion of the territory within the county that is not within the zoning jurisdiction of a municipality;”
    One more reviewed finding on this topic
    • General — New Mexico counties may adopt zoning ordinances for all or any portion of county territory that is not within a municipality's zoning jurisdiction.
      “A.  a county zoning authority may adopt a zoning ordinance applicable to all or any portion of the territory within the county that is not within the zoning jurisdiction of a municipality;”
  • county building authorityGeneral

    New Mexico counties that establish and maintain a building department for permitting and inspections of general construction, mechanical-plumbing, and electrical work, including residential construction in unincorporated areas.

    • CID retains statewide permitting and inspection authority unless a county, municipality, or political subdivision has a current building department providing permitting and inspections.
    • To establish and maintain a building department, the county must establish a full-service building department covering general construction, mechanical-plumbing, and electrical trades; employ a full-time certified building official; and employ sufficient CID-certified inspectors for each trade.
    • The county authority does not include liquefied petroleum work, over which CID has exclusive authority.
    • CID conducts all inspections if the county lacks a certified building official.
    • If the certified building official leaves, plan review, permitting, and inspections transfer to the state unless the county replaces the official within 60 days or a longer period approved by the division, or enters a memorandum of understanding with another county, municipality, or political subdivision.

    replacement period for certified building official: 60 days (A longer period may be approved by the division.)

    “In order to establish and maintain a building department allowing permitting and inspections the county, municipality or political subdivision must establish a full-service building department including general construction, mechanical-plumbing and electrical trades, must employ a full-time certified building official and employ sufficient CID certified inspectors to inspect for each trade.”
    One more reviewed finding on this topic
    • Limited — New Mexico counties that qualify as an authority having jurisdiction may administer permitting, inspection, and enforcement for residential construction in unincorporated areas and enforce applicable New Mexico construction codes.
      ““Authority having jurisdiction” “AHJ” means the state or a municipality, county or other political subdivision that has a full-service building department employing a full-time certified building official and has permitting, inspection and enforcement authority over the general construction, electrical and mechanical-plumbing trades within its jurisdiction.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • County-wide zoning — Countywide zoning in Harding County, including unincorporated areas and the incorporated communities of Roy and Mosquero.
  • Local zoning — Aggregate of zoning by the county and incorporated communities within Harding County, including Roy and Mosquero; this aggregate does not imply that the county administers municipal ordinances.
  • Zoning districts — Published zoning districts in Harding County.
  • Minimum dwelling size — Minimum dwelling size in unincorporated Harding County.
  • Minimum lot size — Minimum lot size in unincorporated Harding County.
6 more unanswered
  • Setbacks
  • Lot coverage
  • Living in an RV
  • Camping on your land
  • Accessory dwellings
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Water rights & wells in Harding County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from New Mexico’s water agency.

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

Household wellPermit required (issued by right)

Nearly all developed New Mexico lies inside an OSE 'declared' underground water basin, but a household 72-12-1.1 domestic well is a by-right permit the State Engineer issues even in closed/over-appropriated basins (metering can be required). The by-right amount is cut to 0.25 acre-ft/yr in a declared Domestic Well Management Area, and a few basin-specific orders cap it further (Gallup Order 197, Zuni Order 199) or stop issuing new domestic permits entirely (Hot Springs Order 198).

Limit: 1 acre-ft/yr by right (NMSA 72-12-1.1); 0.25 acre-ft/yr in a declared Domestic Well Management Area

NM OSE domestic well rules, 19.27.5 NMAC ↗
  • Tucumcari Underground Water Basinpartial of county

    OSE-declared Article-7 groundwater basin; new non-domestic (72-12-3) appropriations require an OSE permit showing unappropriated water. The 72-12-1.1 household domestic well remains by-right — no Domestic Well Management Area is declared in New Mexico. OSE-declared basin centered on Quay County (Order 155, 1998).

    NM OSE Article 7 (Declared Underground Water Basins) ↗
  • Canadian River Underground Water Basinpartial of county

    OSE-declared Article-7 groundwater basin; new non-domestic (72-12-3) appropriations require an OSE permit showing unappropriated water. The 72-12-1.1 household domestic well remains by-right — no Domestic Well Management Area is declared in New Mexico. Canadian River drainage in NE NM (Order 161, 2005), administered under the Canadian River Compact.

    NM OSE Article 7 (Declared Underground Water Basins) ↗

Prior-appropriation state (first in time, first in right). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the New Mexico state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Harding County, New Mexico

Is Harding County a good place to live off-grid or homestead?

Harding County scores 33/100 on the Bolthole Index, a marginal county profile. Its strengths: deep seclusion — about 181 people within 15 miles and manageable long-term carry cost. Watch-outs: thin water margin (15.6″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Harding County, New Mexico?

Harding County generally requires a residential building permit. Onsite septic is permitted by New Mexico Environment Department (Liquid Waste Program). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Harding County, New Mexico?

Land in Harding County runs about $447 per acre, based on the latest county data.

What is the water situation in Harding County?

Harding County gets about 15.6" of rain a year, with severe drought in roughly 45.3% of years. On water rights, Harding County lies in the Tucumcari Underground Water Basin — OSE-declared Article-7 groundwater basin; new non-domestic (72-12-3) appropriations require an OSE permit showing unappropriated water. The 72-12-1.1 household domestic well remains by-right — no Domestic Well Management Area is declared in New Mexico. OSE-declared basin centered on Quay County (Order 155, 1998)..

How remote is Harding County?

A typical private-land location has about 181 people within 15 miles and 375,724 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Harding compares in New Mexico

Compare side-by-side →See all 33 New Mexico counties ranked →