Bolthole Index

Montezuma County, Colorado

Zoning, building permits and septic rules in the Town of Mancos, Colorado

The Town of Mancos, Colorado, in Montezuma County, zones its own land through its Land Use Code1 and runs a Building Department that handles building permit applications and inspections2. Living in an RV is allowed inside town only in an approved RV park3. Septic permits are a separate question handled through the county health office; we could not confirm how that works inside town limits4.

At a glance

Zoning
Yes. The town administers its own Land Use Code through a Zoning Administrator1
Building permits
Town Building Department handles permit applications and inspections2
RV living
Only in an RV park, with a stay limit of 180 days per site3
Manufactured homes
Allowed if they meet town standards; older mobile homes cannot be moved in5
Accessory dwellings
Allowed by right in single-family districts6
Septic
Montezuma County Environmental Health permits septic systems countywide; town-limit details unconfirmed4
Electrical and plumbing
Permitted and inspected by the State of Colorado, not the town2

Who to call

Building permits

Town of Mancos Building Department

Planning and zoning, building permits and inspections, and code enforcement inside Mancos town limits

(970) 533-7725

117 N Main, Mancos, CO 81328

Septic permits

Montezuma County Environmental Health

Septic system applications and permits for Montezuma County

(970) 564-4763

Montezuma County Annex, 106 West North, Cortez, CO 81321

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Off-grid gear

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

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Does Mancos, CO have zoning, and what does it mean for RVs and tiny homes?

Yes. The Town of Mancos administers zoning through Chapter 16 of its Land Use Code, with a Zoning Administrator1. Permitted accessory uses are set by zone district in the code's accessory-use table1.

RV living inside Mancos is tightly limited: the code allows an RV for human habitation only in an RV park, and an RV park needs a minimum of 3 acres and an approved site plan review3. A stay is capped at 180 days, with a move to another site allowed for another 180 days in any twelve-month period, then a thirty-day cooling-off period3. Parking an RV on a private lot to live in is not what the code describes.

Manufactured homes must meet skirting, tie-down and HUD-standard requirements, with a finished floor no more than 24 inches above grade5. Older mobile homes that do not meet the manufactured-home definition cannot be moved into town5. We found no tiny-home provision in the town sections we reviewed, so ask the Building Department before planning one; Colorado's Division of Housing does certify tiny homes for long-term living when local zoning also allows them7.

Do you need a building permit in Mancos, and who issues it?

The Town of Mancos runs its own Building Department, which handles building permit applications, building inspections, planning and zoning, and code enforcement in one office2. Inside town limits, that is the office to call, not Montezuma County. We could not confirm the town's exact permit thresholds or which projects are exempt, so call (970) 533-7725 before starting any project2.

Electrical and plumbing work is different. The town does not inspect it; those permits and inspections come from the State of Colorado, and a contractor you hire is responsible for pulling them2.

How do septic permits work in Mancos?

Colorado requires a permit before anyone constructs, alters or installs an on-site wastewater system, and the permit comes from the local public health agency8. In Montezuma County that agency is Montezuma County Environmental Health, which reviews septic applications and awards permits49.

Whether a lot inside Mancos is on town sewer or needs its own septic system, we could not confirm. Ask the Town of Mancos Building Department about sewer connection first, and Environmental Health at (970) 564-4763 if the lot would need its own system9. Soils matter too: across Montezuma County about 15% of soils rate as not limited for a conventional drain field, so many sites need a site evaluation or an engineered system10.

What about floodplain rules in Mancos?

In special flood hazard areas with a mapped base flood elevation, new residential construction inside town must have its lowest floor, including any basement, elevated 1 foot above base flood elevation11. The lowest floor must be certified by a Colorado professional engineer, architect or land surveyor to the town's Floodplain Administrator11. RVs in the mapped flood zones must be on site under 180 consecutive days and be highway-ready, or meet manufactured-home requirements11.

Can you build accessory buildings and second homes on a Mancos lot?

Accessory dwelling units are permitted by right in Mancos's single-family zone districts and need a special use permit in the multifamily and mixed-use districts6. The owner must live in the main or accessory unit at least six months a year and record an owner-occupancy deed restriction with the Montezuma County Recorder6. Only one ADU is allowed per residential lot, it cannot be sold separately, and the lot must be at least 3,000 square feet6.

Sheds and garages have their own limits. Accessory buildings may not be in a required setback or within 5 feet of another building12, though buildings up to 600 square feet may sit in side and rear setbacks if they are at least 5 feet from the property line and clear of easements12. Accessory structures top out at 20 feet and can never be taller than the main building13.

Building a home in Mancos: the steps, in order

  1. Look up the zone district for the lot with the town's zoning map and read the Land Use Code for that district1.
  2. Ask the Building Department for a pre-application meeting at (970) 533-7725 to confirm which approvals the project needs2.
  3. Check the flood map; a lot in a mapped flood zone needs an elevated floor and a certified elevation11.
  4. Confirm sewer service with the town, or apply to Montezuma County Environmental Health for a septic permit if the lot needs its own system9.
  5. Hire licensed electrical and plumbing contractors, who pull the State of Colorado permits2.

What stays with Montezuma County, and what to check before you buy near Mancos?

The county's own rules do not apply inside Mancos. They cover unincorporated land: Montezuma County's Land Use Code applies to all land in the unincorporated areas14, and the county does not enforce residential building codes there15. If the parcel you are looking at lies outside town limits, use the Montezuma County page instead.

Countywide, septic stays with the county health office4. Property tax runs at an effective rate of 0.3% in Montezuma County, with a median bill of $915 a year1617.

Watch-outs

  • We could not confirm Mancos's exact building permit thresholds, minimum lot sizes or setbacks by district; call the Town of Mancos Building Department at (970) 533-7725 before you buy or plan a build2.
  • An RV is allowed for human habitation in Mancos only in an approved RV park, so living in one on a private lot is not an option the code describes3.
  • Septic and sewer arrangements for lots inside town limits are unconfirmed; ask Montezuma County Environmental Health and the town before you close9.

Sources

  1. Mancos Municipal Code Sec. 16-4-10 Accessory uses (Town of Mancos), quoted and re-checked
  2. Town of Mancos Building Department (mancoscolorado.com)
  3. Mancos Municipal Code Sec. 16-4-6 Commercial use standards (RV park) (Town of Mancos), quoted and re-checked
  4. Environmental Health, quoted and re-checked
  5. Mancos Municipal Code Sec. 16-4-5 Residential use standards (Town of Mancos), quoted and re-checked
  6. Mancos Municipal Code Sec. 16-4-10 Accessory uses (Town of Mancos), quoted and re-checked
  7. Consumers of Manufactured Homes and Tiny Homes - HUD (Colorado statewide rule), quoted and re-checked
  8. Title 25 - Public Health and Environment - Colorado Revised Statutes 2024 (Colorado statewide rule), quoted and re-checked
  9. Montezuma County Environmental Health (montezumacounty.gov)
  10. 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
  11. Mancos Municipal Code Sec. 16-17-20 Floodplain specific standards (Town of Mancos), quoted and re-checked
  12. Mancos Municipal Code Sec. 16-4-10 Accessory uses (Town of Mancos), quoted and re-checked
  13. Mancos Municipal Code Sec. 16-4-10 Accessory uses (Town of Mancos), quoted and re-checked
  14. Resolution No. 21-2020 The Montezuma County Land Use Code, quoted and re-checked
  15. Building in Montezuma County, quoted and re-checked
  16. Effective property tax rate: Bolthole Index county data
  17. Median property tax bill: Bolthole Index county data

Written October 16, 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.

Answers from the rulebook for Town of Mancos

Town of Mancos’s own rules

  • Local zoningPresent

    Land inside Mancos town limits

    • Zoning is administered through the Land Use Code (LUC), Chapter 16, by a Zoning Administrator.
    “Permitted accessory uses are identified by zone district in Table 16-4.2: Accessory Uses.”
  • SetbacksSpecified

    Accessory buildings in all Mancos districts (principal-building setbacks per district not opened)

    • Accessory buildings up to 600 sq ft may be in side and rear setbacks if at least 5 ft from property line and clear of easements.

    accessory building separation from other buildings: >= 5 feet (accessory buildings not exceeding 600 sq ft may be in side/rear setbacks if 5 ft from property line)

    “No accessory building shall be erected in any required setback nor within five (5) feet of any other building”
  • Building heightSpecified

    Accessory uses/structures in Mancos town (principal building height by district not opened)

    • Except as provided in Section 16-3-8; in no case taller than the principal structure.

    max accessory height: <= 20 feet (Section 16-3-8)

    “the maximum height for accessory uses is twenty (20) feet, and in no case taller than the principal structure.”
  • Living in an RVLimited

    RV habitation inside Mancos town limits

    • RV parks need a minimum 3 acres and approved site plan review.
    • No stay over 180 days; may move to another site for another 180 days in any twelve-month period, then a thirty-day cooling off period.
    • Stand-alone tents are prohibited in RV parks.

    max stay per site: <= 180 days (may move to another RV park site for an additional 180 days in any 12 months, then 30-day cooling off)

    “an rv is only allowed for human habitation if located in an rv park.”
  • Manufactured homesLimited

    Manufactured and mobile homes inside Mancos town limits

    • Manufactured homes must meet skirting, running-gear removal, tie-down, 24-inch maximum finished floor height, and HUD-standard requirements.
    • Mobile homes not meeting the manufactured home definition cannot be moved in or relocated as of September 18, 2004.

    max finished floor height above grade: <= 24 inches

    “As of September 18, 2004, mobile homes not meeting the definition of a manufactured home shall not be moved into or otherwise installed within the Town limits.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units inside Mancos town limits

    • Special use permit in multifamily and mixed-use districts; wholly internal ADUs permitted in commercial districts.
    • Owner must live in the primary or accessory unit at least six months a year and record an owner-occupancy deed restriction with the Montezuma County Recorder.
    • One ADU per residential lot; may not be sold separately; minimum lot size 3,000 sq ft.

    minimum lot size with ADU: >= 3000 sq ft

    “New attached and detached accessory dwelling units are permitted by right in the single-family zone districts and are allowed by special use permit in the multifamily and mixed-use zone districts.”
  • Building in a floodplainRequired

    Special flood hazard areas with base flood elevation inside Mancos town

    • Lowest floor certified by a Colorado professional engineer, architect or land surveyor to the Floodplain Administrator.
    • RVs in Zones A1-30, AH, AE must be on site under 180 consecutive days and highway-ready, or meet manufactured home requirements.

    elevation above base flood: >= 1 foot

    “New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to one (1) foot above base flood elevation.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Mancos or Montezuma County directly.

  • Building permit — Building permits inside Mancos town
  • Owner-builder exemption — Owner-builder exemption inside Mancos town
  • Building code adopted — Building code inside Mancos town
  • Inspections — Building inspections inside Mancos town
  • Certificate of occupancy — Certificates of occupancy inside Mancos town
15 more unanswered
  • Minimum dwelling size
  • Minimum lot size
  • Lot coverage
  • Tiny homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Permit fees
  • Permit process

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.

Unanswered questions are usually a sign that Town of Mancos publishes no rule on the point, not that none exists. Montezuma County’s page lists the county offices to call.

← All of Montezuma County: county rules, score and offices