Bolthole Index

Fannin County, Texas

Building permits, zoning and land rules in Fannin County, Texas

68Index Score / 100
#50 of 254 in Texas

Unincorporated Fannin County, Texas generally does not require a county building permit outside the Lake Ralph Hall and Bois d'Arc Lake zoning areas12. Within either lake area, non-exempt new structures over 1,000 square feet need a Lake Area Development (Building) Permit and a final zoning-compliance inspection345. Cities may control building permits and zoning inside their boundaries, but Fannin County handles septic permits and inspections countywide26.

At a glance

Building permit
Generally not required outside the lake zoning areas; required there for non-exempt new structures over 1,000 square feet134
Zoning
Only in the Lake Ralph Hall and Bois d'Arc Lake zoning areas; rest of county unzoned7
Septic
County OSSF permit required before construction, alteration, repair, extension or operation; county inspection required before covering89
Septic soils
Only 6.6% of county soils are free of severe limits for a conventional drain field10
Lake Ralph Hall RV parks
An RV may stay no more than 60 days in any 12-month period11
Driveway/culvert on a county road
Permit required from Development Services before soil-disturbing work12
Owner-builder exemption
No blanket permit or inspection exemption; a narrow state notice-penalty exemption may apply13
Property tax
1.1% effective rate14

Who to call

Septic permits

Fannin County Environmental Development Department (OSSF)

OSSF (septic) permits, inspections and applications for all of Fannin County

903.583.7495

septicpermits@fanninco.net

1203 E. Sam Rayburn Drive, East Annex, Bonham, TX 75418

Online permits →

Planning & zoning

Fannin County Development Services

Lake Ralph Hall and Bois d'Arc Lake zoning permits, subdivision plats, culvert/road right-of-way permits, manufactured home rental community permits, and 911 addressing referrals

903-449-4220

development@fanninco.net

1203 E. Sam Rayburn Drive, Bonham, TX 75418

Online permits →

Floodplain permits

Fannin County Floodplain Administrator (Emergency Management)

Floodplain development permits for construction in mapped flood zones

903-640-8484

thudson@fanninco.net

2375 Silo Road, Bonham, TX 75418

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Off-grid gear

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

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Fannin County, Texas?

Fannin County generally does not require a county building permit for a typical home or outbuilding in unincorporated territory outside its two lake zoning areas12. Within both the Lake Ralph Hall and Bois d'Arc Lake zoning areas, non-exempt new structures over 1,000 square feet need a Lake Area Development (Building) Permit before construction begins34. Agricultural buildings, remodels or expansions of existing single-family homes, and accessory buildings on lots of at least two acres are among the stated building-permit exemptions in both lake areas34. Lake-area construction governed by that building-permit process requires a final zoning-compliance inspection before the county issues a Utility Connection Certificate5. Fannin County has not identified a comprehensive county building-code edition or countywide building-inspection program outside the lake areas, so ask Development Services about the parcel and project. Acting as your own contractor does not waive building permits or inspections; state law provides only a narrow exemption from a notice-related penalty when its conditions apply15.

Who issues building, zoning and septic permits in Fannin County?

Fannin County Development Services handles Lake Area Development (Building) Permits and zoning approval in the Lake Ralph Hall and Bois d'Arc Lake areas, plus subdivision plats and county-road culvert or right-of-way permits; reach the office at 903-449-4220 or development@fanninco.net at 1203 E. Sam Rayburn Drive, Bonham, TX 7541816. Inside an incorporated city, ask that city's building and zoning office what local approval applies; county lake zoning yields when annexed property leaves the county map, and higher municipal standards control2. Fannin County Environmental Development still handles septic permits and inspections countywide at 903.583.7495 or septicpermits@fanninco.net617. The county Floodplain Administrator handles floodplain development permits at 903-640-848418. Development Services directs applicants to MGO Connect for county permit applications and supporting documents19.

Does Fannin County have zoning?

Fannin County administers zoning in two specific lake areas rather than uniformly across the county2. Lake Ralph Hall has adopted zoning districts shown on the county's map; the regulated area may reach property within 5,000 feet of the shoreline at elevation 551 feet2021. Bois d'Arc Lake has its own mapped zoning districts, so ask Development Services which district and standards apply to the parcel2216. Agricultural uses, buildings, and structures are exempt from the landscape section in each lake area's regulations, but that limited exemption does not remove other zoning, subdivision, or septic requirements2324. In three named Lake Ralph Hall districts, a HUD-Code manufactured home may be used as a residence25. Outside the lake areas, Fannin County has not confirmed a private-RV occupancy rule, tiny-home occupancy rule, or countywide minimum home size; ask Development Services about the exact parcel.

How do septic permits work in Fannin County?

Fannin County requires a septic permit and approved plan before an on-site sewage facility is constructed, altered, repaired, extended, or operated8. Environmental Development must issue an Authorization to Construct before work begins, and the county must inspect the installation before it is covered89. Arrange that inspection at least one working day ahead; a successful inspection leads to an Authorization to Operate9. The current checklist lists a $375 residential fee, $550 commercial fee, $150 repair fee, and $100 reinspection fee26. Applicants need a TCOG-assigned 911 address, and aerobic systems require an ongoing service contract and recorded maintenance affidavit26. Only 6.6% of county soils are rated without severe limits for a conventional drain field10. Texas has a narrow exemption for a single-family home on at least 10 acres when every condition is met, including keeping every OSSF component at least 100 feet from the property line27.

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

Fannin County has not confirmed a countywide rule for living in an RV or tiny home on a private tract outside the Lake Ralph Hall and Bois d'Arc Lake zoning areas, so the general building-permit answer is not permission to occupy one. At RV parks within either lake zoning area, an RV may remain no more than 60 calendar days during any 12-month period1128. Those RV-park limits do not establish a rule for an owner occupying one RV on a private tract or for ordinary short-term rental of a dwelling2928. Unincorporated-county subdivision rules separately reach RV parks and manufactured-home parks with two or more rented lots30. HUD-Code manufactured homes are allowed as residences in three named Lake Ralph Hall districts, but the county has not confirmed a tiny-home rule as such25. Call Development Services with the parcel and proposed use before buying.

Building a home in Fannin County: the steps, in order

  1. Ask Development Services whether the parcel is in a city or the Lake Ralph Hall or Bois d'Arc Lake zoning area, and identify the mapped district162022.
  2. If county lake zoning applies, determine whether the project needs a Lake Area Development (Building) Permit or qualifies for an exemption34.
  3. Submit county building, zoning, subdivision, floodplain, or driveway applications through MGO Connect as applicable19.
  4. Obtain a 911 address, secure the septic Authorization to Construct, and arrange the required pre-cover septic inspection at least one working day ahead89.
  5. If lake-area building rules apply, complete the required final zoning-compliance inspection before the Utility Connection Certificate is issued5.
  6. Obtain a county driveway-culvert permit before disturbing county road right-of-way12.
  7. For state-highway access, submit TxDOT Form 1058 and give 24 hours' notice before construction31.

What to check before you buy land in Fannin County

Start with the city boundary and lake zoning maps because location changes which building permit and zoning approval apply2. Dividing land into two or more parts in unincorporated Fannin County generally requires a plat, including lots over 5 acres, RV parks, and manufactured-home parks with two or more rented lots32. A qualifying agricultural, farm, ranch, wildlife-management, or timber-production division may avoid platting only while every daughter tract remains in the qualifying use and no land is laid out for public or shared use33. The plat exception does not remove minimum frontage or setback requirements32. Published subdivision fees vary by application and can include per-lot and engineering charges, so get the current total from Development Services34. Only 6.6% of county soils are rated without severe limits for a conventional drain field10. Also verify floodplain development and road-access permits before closing351236. The effective property-tax rate is 1.1%, with a median annual bill of $2,3561437.

Watch-outs

  • The Lake Ralph Hall rules do not identify a specific building-code edition, so confirm applicable construction standards with Development Services before building38.
  • Private-tract RV and tiny-home occupancy outside the lake areas remains unconfirmed; the 60-day rules apply specifically to RV parks within the two lake zoning areas1128.
  • An owner-builder may avoid a state notice-related penalty under narrow conditions, but that provision does not waive building, zoning, septic, or inspection requirements15.

Sources

  1. Fannin County Environmental Development (2026 county census)
  2. Fannin County Regulations, Ordinances and Resolutions, quoted and re-checked
  3. Fannin County Lake Ralph Hall Zoning Regulations, quoted and re-checked
  4. Fannin County Bois d’Arc Lake Zoning Regulations, quoted and re-checked
  5. Development Application Handbook, quoted and re-checked
  6. Environmental Development - Septic Permits, quoted and re-checked
  7. Fannin County Regulations, Ordinances and Resolutions (2026 county census)
  8. How to Obtain a Septic System Permit for an On-Site Sewage Facility, quoted and re-checked
  9. How to Obtain a Septic System Permit for an On-Site Sewage Facility, quoted and re-checked
  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. Lake Ralph Hall Zoning Regulations, quoted and re-checked
  12. Fannin County Policy, Procedures and Specifications for Driveway Culverts and Work in Road Right-of-Way, quoted and re-checked
  13. Texas Local Government Code Chapter 233, quoted and re-checked
  14. Effective property tax rate: Bolthole Index county data
  15. Texas Local Government Code Chapter 233, quoted and re-checked
  16. Fannin County Development Services (co.fannin.tx.us)
  17. Fannin County Environmental Development Department (OSSF) (co.fannin.tx.us)
  18. Fannin County Floodplain Administrator (Emergency Management) (co.fannin.tx.us)
  19. Development Services, quoted and re-checked
  20. Fannin County Regulations, Ordinances and Resolutions, quoted and re-checked
  21. Fannin County Regulations, Ordinances and Resolutions, quoted and re-checked
  22. Fannin County Regulations, Ordinances and Resolutions, quoted and re-checked
  23. Lake Ralph Hall Zoning Regulations, quoted and re-checked
  24. Bois d'Arc Lake Zoning Regulations, quoted and re-checked
  25. Lake Ralph Hall Zoning Regulations, quoted and re-checked
  26. Environmental Development - Septic Permits, quoted and re-checked
  27. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  28. Bois d'Arc Lake Zoning Regulations, quoted and re-checked
  29. Lake Ralph Hall Zoning Regulations, quoted and re-checked
  30. Fannin County, TX Subdivision Regulations, quoted and re-checked
  31. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  32. Fannin County Subdivision Regulations, quoted and re-checked
  33. Fannin County Subdivision Regulations, quoted and re-checked
  34. Fee schedule, quoted and re-checked
  35. How to Obtain a Fannin County Floodplain Development Permit, quoted and re-checked
  36. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  37. Median property tax bill: Bolthole Index county data
  38. Lake Ralph Hall Zoning Regulations, quoted and re-checked

Written October 10, 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.

Found land here? Start a Property Hunt →

Compared with neighboring counties

Unlike all 6 of its neighbors, Fannin County has countywide zoning.

RuleFannin CountyDelta CountyGrayson CountyLamar CountyHunt CountyCollin CountyHopkins County
Building permitNot requiredNot requiredNot requiredNot requiredNot requiredLimitedLimited
County zoningYesNoNoNoNoNoNo
Septic permitsCounty Env. Development Dept.County Development ServicesCounty Development ServicesNot publishedCounty Health Dept.County Development ServicesCounty Env. Services

County locator

Fannin County in Texas

68
County map
Fannin County highlighted among the Texas counties · colored by Index score

How Fannin County scores

Seclusion61100% ev.
Self-Sufficiency58100% ev.
Admin Boringness6790% ev.
Durability38100% ev.
Property Autonomy71100% ev.
Carry Cost74100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$289kTypical home
1.1%Property tax
$3,952Land / acre
44.2"Annual rain
19.5% of yrsSevere drought
34.5 / yr (+23.9)Mid-century 100°F days
21.9 daysMid-century dry spell
2.47" (+6.7%)Mid-century 1-day rain
1.42×Wildfire change factor
100%Forward climate coverage
$2,266Home insurance / yr
0.8% / yrInsurance growth
0%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
4,896People within 30 min
6,680,372People within 2 hr
26,375Radius comparison (15 mi)
42.2People / sq mi
3.8%Federal land
100%Land at 15% slope or less
6.6%Soils rated "not limited" for septic (strict USDA rating)
37,323 acWorkable land screen
28.9%Wooded land
26.4 tonsBiomass / forest ac
63.8°FAvg temp

Scout Fannin County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Fannin County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Cities and towns in Fannin 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.

Not yet researched: Bailey · Town of Dodd City · Ector · Honey Grove · Town of Ladonia · Ravenna · Savoy · Town of Windom

Answers from the rulebook for Fannin County

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

Fannin County rules

  • Building permitLimited

    New structures over 1,000 square feet within the Bois d’Arc Lake Zoning Area and applicable zoning districts in Fannin County.

    • The Bois d’Arc Lake Zoning Area is the area within 5,000 feet of the shoreline and is subject to the Lake Zoning Regulations.
    • All agricultural buildings and structures, such as barns and loafing sheds, are exempt.
    • All expansions or remodels of existing single-family homes are exempt.
    • All accessory buildings on lots two acres or larger are exempt.
    • All buildings and structures associated with dam-related construction activities, utilities, and operations are exempt.
    • The RFO, Reservoir Facilities and Operations District, is exempt.
    • The application is obtained from the Commissioners Court and must include the listed property, owner, zoning, work-scope, map, plan, and attestation information.
    • The application must be presented in three complete copies during normal business hours.
    • The Commissioners Court reviews the application within 30 business days; if it does not act within that period, the applicant is considered approved on the 31st business day, subject to the stated modification rule.
    • Required zoning actions must be completed before applying for the building permit.
    • An approved permit is issued upon payment of the required fee; fees are established in the adopted Fee Schedule.
    • The permit is valid for six months, may be renewed for two additional six-month periods upon verbal request and payment of the appropriate fee, and construction not completed within 18 full months requires a new permit.
    • The Commissioners Court may revoke the permit or issue a stop-work order for departures from plans or conditions, false representation, issuance in error, or violations of building codes or zoning regulations; failure to secure the permit and pay the prescribed fee also requires a stop order.

    minimum structure area: > 1000 square feet (Unless exempted by the regulation.) · permit validity: 6 months (May be renewed for two additional six-month periods.) · application copies: 3 complete copies · review period: 30 business days (Applicant is considered approved on the 31st business day if the Commissioners Court has not acted, subject to the stated modification rule.) · permit fee: required fee established in adopted Fee Schedule

    “Unless exempted, all new structures over 1,000 square feet shall be required to obtain a Lake Area Development (Building) Permit before construction activities occur.”
    2 more reviewed findings on this topic
    • Limited — New structures over 1,000 square feet within the Lake Ralph Hall Lake Zoning Area and applicable zoning districts in Fannin County.
      “Unless exempted, all new structures over 1,000 square feet shall be required to obtain a Lake Area Development (Building) Permit before construction activities occur.”
    • Limited — New structures over 1,000 square feet within the Lake Ralph Hall Lake Zoning Area.
      “Unless exempted, all new structures over 1,000 square feet shall be required to obtain a Lake Area Development (Building) Permit before construction activities occur.”
  • InspectionsLimited

    Buildings subject to Fannin County Lake Zoning Regulations and the Lake Area Development (Building) Permit process.

    • A written application for a Utility Connection Certificate for a new building or altered existing building must be made at the same time as the Lake Area Development (Building) Permit application.
    • The certificate request is made after erection or alteration is completed in conformity with the Regulations.
    • The county certificate process is tied to a final inspection for compliance with the Lake Zoning Regulations.
    • The source does not establish a general countywide building-inspection program outside the regulated lake areas.

    certificate issuance period after written request: 14 calendar days (After erection or alteration has been completed in conformity with the Regulations.)

    “the final inspection has been performed to ensure compliance of the Lake Zoning Regulations.”
    One more reviewed finding on this topic
    • Required — Construction governed by the Fannin County Lake Zoning building-permit process.
      “The Utility Connection Certificate will be issued upon completion of construction and the final inspection has been performed to ensure compliance of the Lake Zoning Regulations.”
  • County-wide zoningPresent (with conditions)

    County zoning administered by Fannin County in designated Lake Ralph Hall and Bois d'Arc Lake zoning areas, rather than uniformly throughout all county territory.

    • Lake Ralph Hall regulations were adopted 02/07/2023.
    • Lake Ralph Hall zoning may apply within 5,000 feet of the Lake Ralph Hall shoreline; the regulations state that the shoreline is at elevation 551 feet above mean sea level.
    • Lake Ralph Hall regulations apply within the zoning districts shown on the Official Zoning District Map.
    • Bois d'Arc Lake regulations were adopted 10/30/2018 and apply according to their zoning district map and lake-area boundaries.
    • If a municipality annexes property controlled by the Lake Ralph Hall regulations, the County and municipality coordinate to exclude the annexed property from the county zoning map.
    • Municipal or other local regulations imposing higher standards control over the lake zoning regulations.

    Lake Ralph Hall shoreline buffer: <= 5000 feet (The source states the area within 5,000 feet may be the Lake Zoning Area and may be subject to the regulations.) · Lake Ralph Hall adoption date: 2023-02-07 · Bois d'Arc Lake adoption date: 2018-10-30

    “Pursuant to TLGC 231.132.(a), the area within 5,000 feet of the shoreline of Lake Ralph Hall may be the Lake Zoning Area and may be subject to Lake Zoning Regulations.”
  • Local zoningPresent (with conditions)

    Land within the Lake Zoning Area surrounding Lake Ralph Hall in Fannin County, including land within the zoning districts shown on the Official Zoning District Map.

    • The Lake Zoning Area may include property within 5,000 feet of the shoreline of Lake Ralph Hall.
    • The shoreline elevation specified by the regulations is 551 feet above mean sea level (AMSL).
    • The regulations apply within the zoning districts shown on the Zoning District Map.
    • Compliance applies to land, buildings, structures, and appurtenances within the Lake Zoning Area that are occupied, used, erected, altered, removed, placed, demolished, or converted.
    • The regulations were adopted on 2023-02-07. The amendment log records Commissioners Court approvals on 2023-06-13 and 2023-10-17, including amendments to dimensional, use, and district provisions.
    • The Commissioners Court is responsible for maintaining the Official Zoning District Map and has authority to interpret and enforce the Lake Zoning Regulations.
    • If another statute, order, or local regulation imposes higher standards, that other provision controls.
    • If properties controlled by the Lake Zoning Regulations are annexed by a municipality, the County and municipality will coordinate to exclude the newly annexed property from the Official Zoning District Map.

    maximum Lake Zoning Area distance from Lake Ralph Hall shoreline: <= 5000 feet (The regulation states the area within 5,000 feet may be the Lake Zoning Area.) · shoreline elevation: 551 feet AMSL

    “Lake Zoning Regulations shall be applied within the zoning districts shown on the Zoning District Map.”
  • Zoning districtsPublished (with conditions)

    Bois d'Arc Lake zoning area administered under Fannin County zoning regulations.

    • The county page identifies Bois d'Arc Lake Zoning Regulations as adopted 10/30/2018 and states that the regulations include latest approved updates.
    • This claim concerns the identified lake zoning area, not all unincorporated county land.
    “Bois d'Arc Lake Zoning Regulations adopted 10/30/2018 (includes latest approved updates)”
    One more reviewed finding on this topic
  • Living in an RVLimited

    Recreational vehicle occupancy at an RV Park within the Lake Ralph Hall zoning jurisdiction in Fannin County.

    • No recreational vehicle may remain at the RV Park for more than 60 calendar days during any 12-month period.
    • All recreational vehicles must be currently legally inspected, with current registration and license and as may be otherwise required to lawfully be towed or operated on public roadway in Texas.
    • The Lake Ralph Hall Zoning Regulations were adopted on 02/07/2023.

    maximum stay: <= 60 calendar days during any 12-month period

    “a. No Recreational Vehicle may remain at the RV Park for more than sixty (60) calendar days during any twelve (12) month period. b. All Recreational Vehicles must be currently legally inspected, with current registration and license and as may be otherwise required to lawfully be towed or operated on public roadway in the State of Texas”
  • Camping on your landLimited

    Temporary camping in a recreational vehicle at an RV Park within the Lake Ralph Hall zoning jurisdiction.

    • The source rule addresses Recreational Vehicle occupancy at an RV Park, not all forms of camping.
    • No recreational vehicle may remain more than 60 calendar days during any 12-month period.
    • The vehicle must be legally inspected, registered, and licensed as required for lawful roadway operation.

    maximum stay: <= 60 calendar days during any 12-month period

    “a. No Recreational Vehicle may remain at the RV Park for more than sixty (60) calendar days during any twelve (12) month period. b. All Recreational Vehicles must be currently legally inspected, with current registration and license and as may be otherwise required to lawfully be towed or operated on public roadway in the State of Texas”
  • Manufactured homesAllowed (with conditions)

    HUD-Code manufactured homes used as residential dwellings in the Agriculture and Ranching, Rural Estate Single-Family, and Low Density Single-Family districts under the Lake Ralph Hall Zoning Regulations.

    • The use chart marks Manufactured Home (HUD Code) as permitted in the A&R, RE, and LD districts.
    • The source defines a HUD-Code manufactured home as a movable manufactured home that can be used as a residential dwelling with or without a permanent foundation.
    • The district-specific zoning regulations were adopted on 02/07/2023.
    • Other districts, incorporated municipalities, and locations outside the Lake Ralph Hall zoning jurisdiction may have different rules.
    “A HUD-Code manufactured home is also defined as a movable manufactured home that was constructed after June 15, 1976. A HUD-Code manufactured home will display a red certification label on the exterior of each transportable section.”
  • Who permits septicCounty

    On-site sewage facilities in Fannin County, including county permitting and inspection functions.

    • The county operates its Environmental Development Department for OSSF matters.
    • The county acts as an authorized agent within its approved area of jurisdiction under the state OSSF program.
    “Our Environmental Development Department is operated to serve the public in matters related to on site sewage facilities (OSSF). Please feel free to contact us.”
  • Septic permitRequired

    Construction, alteration, repair, extension, or operation of an OSSF in Fannin County.

    • A permit and approved plan are required before constructing, altering, repairing, extending, or operating an OSSF.
    • Fannin County requires Environmental Development review before issuing an Authorization to Construct.
    • The county guide states a minimum lot size of 1 acre, or any lot platted after January 26, 2009; other subdivision regulations may apply.
    • Flood zones may require a flood permit.
    • Irregular or undersized lots, substantial variances, unconventional designs, and innovative systems require supporting documents.
    • A 911 address must already be assigned by TCOG.
    • New installation permit fee is $225; repair permit fee is $110; administrative fee is $20 for aerobic treatment unit systems.
    • Aerobic treatment units require an ongoing maintenance/service contract and recorded affidavit requirements.

    minimum lot size: 1 acre (or any lot platted after January 26, 2009) · new installation permit fee: 225 USD (state law requires Site/Soil/Design/Planning Materials Report) · repair permit fee: 110 USD (state law requires Site/Soil/Design/Planning Materials Report) · administrative fee: 20 USD (aerobic treatment unit septic systems) · OSSF permit requirement: required before construction, alteration, repair, extension, or operation (emergency tank repairs may be exempt from permitting but must be reported within 72 hours under the cited state rule)

    “Application and required documents, MUST be reviewed by Environmental Development prior to an AUTHORIZATION TO CONSTRUCT (ATC) BEING ISSUED.”
  • Septic inspectionRequired

    Installation of an OSSF in Fannin County.

    • Construction may begin only after confirming that the Authorization to Construct has been issued and that there are no additional requirements.
    • Inspection is required before covering the system.
    • The applicant must contact the county at least one working day in advance to arrange inspection.
    • After a successful inspection, the county issues an Authorization to Operate.
    • The county guide lists a $100 inspection/re-inspection fee.

    inspection/re-inspection fee: 100 USD · advance notice: >= 1 working day (contact the county to arrange inspection)

    “An Inspection of the installation is required before covering of the system. Contact our office at least 1 (One) Working Day in advance to arrange an inspection.”
  • Off-grid sanitationLimited

    Off-grid or private sewage disposal through an on-site sewage facility (OSSF) administered by Fannin County Environmental Development.

    • Environmental Development must review the application and required documents before issuing an Authorization to Construct.
    • Construction may begin only after confirming that the Authorization to Construct has been issued.
    • An installation inspection is required before the system is covered, with at least one working day’s advance notice.
    • An Authorization To Operate is issued after a successful inspection.
    • The guide states a minimum lot size of 1 acre or any lot platted after January 26, 2009; other subdivision regulations may apply.
    • Flood zones may require a Flood Permit.
    • A 911 address must already be assigned by TCOG.
    • Irregular or undersized lots, substantial variances, unconventional designs, or innovative systems require supporting documents; variance requests must demonstrate equivalent protection of public health and the environment.
    • Aerobic treatment units require an ongoing maintenance/service contract and a recorded affidavit of certification of OSSF requiring maintenance.
    • The current checklist lists fees of $375 residential, $550 commercial, $150 repair, $100 reinspection, $25 annual contract, $50 paper fee, and $1,500 variance.

    minimum lot size: >= 1 acre (or any lot platted after January 26, 2009) · inspection notice: >= 1 working day · residential permit fee: 375 USD · commercial permit fee: 550 USD · repair permit fee: 150 USD · reinspection fee: 100 USD · annual contract fee: 25 USD · paper fee: 50 USD · variance fee: 1500 USD

    “Begin construction only after confirming with this office that the ATC has been issued*. An Inspection of the installation is required before covering of the system. Contact our office at least 1 (One) Working Day in advance to arrange an inspection. After a successful inspection, an Authorization To Operate will be issued to the owner.”
  • Agricultural exemptionAvailable (with conditions)

    Division of a tract into two or more daughter tracts in unincorporated Fannin County where each daughter tract is primarily used for qualifying agricultural, farm, ranch, wildlife-management, or timber-production purposes.

    • No part of the tract may be laid out for streets, alleys, squares, parks, or other parts intended for public use or use by purchasers or owners of adjoining lots.
    • Every daughter tract must be used primarily for agricultural use under Section 1-d, Article VIII, Texas Constitution, or for farm, ranch, wildlife management, or timber production under Section 1-d-1, Article VIII, Texas Constitution.
    • If any daughter tract ceases to be used primarily for a qualifying use, the platting requirements apply.
    • The general exceptions section states that exceptions do not apply if new roads are constructed to provide access frontage or access easements are provided for adjacent tract owners; the owner may be required to submit verification documentation, including an affidavit and deeds.
    • Exemptions do not release the subdivider from minimum lot-frontage and minimum-setback requirements.

    daughter tract use: primarily agricultural, farm, ranch, wildlife management, or timber production (platting requirements apply if qualifying use ceases)

    “Every daughter tract is to be used primarily for agricultural use, as defined by Section 1-d, Article VIII, Texas Constitution, or for farm, ranch, wildlife management or timber production use within the meaning of Section l-d-1, Article VIII, Texas Constitution. If any daughter tract ceases to be used primarily for agricultural use or for farm, ranch, wildlife management or timber production use, the platting requirements of these Regulations apply.”
    3 more reviewed findings on this topic
    • Conditional — Division of land in unincorporated Fannin County where every daughter tract will be used primarily for qualifying agricultural, farm, ranch, wildlife-management, or timber-production use.
      “A plat is not required of a landowner who divides a tract into two or more parts if: 1. The owner does not lay out a pm1 of the tract for streets, alleys, squares, parks or other parts intended to be dedicated to public use or for the use of purchasers or owners of lots fronting on or adjacent to the streets, alleys, squares, parks or other parts; and 2. Every daughter tract is to be used primarily for agricultural use, as defined by Section 1-d, Article VIII, Texas Constitution, or for farm, ranch, wildlife management or timber production use within the meaning of Section l-d-1, Article VIII, Texas Constitution. If any daughter tract ceases to be used primarily for agricultural use or for farm, ranch, wildlife management or timber production use, the platting requirements of these Regulations apply.”
    • Available (with conditions) — Agricultural uses, buildings, and structures within the Bois d'Arc Lake zoning area, which the regulations define as the area within 5,000 feet of the shoreline.
      “All agricultural uses, buildings, and structures shall be exempt from compliance with this Section 5.01 Landscape Requirements.”
    • Available (with conditions) — Agricultural uses, buildings, and structures within the Lake Ralph Hall zoning districts shown on the official zoning district map.
      “All agricultural uses, buildings, and structures shall be exempt from compliance with this Section 5.02 Landscape Requirements.”
  • Subdividing landRegulated (with conditions)

    Division of land into two or more parts, lots, or public-use areas in unincorporated Fannin County.

    • The rule applies outside incorporated municipality limits.
    • A plat is required for the listed divisions, including lots over 5 acres, RV parks, and manufactured-home parks with two or more rental lots.
    • The only plat exceptions are those identified in Texas Local Government Code Section 232.0015 and Section 3.1 of the regulations.
    • Plat exemptions do not eliminate minimum lot-frontage or minimum-setback requirements.
    • The current document is headed Jan. 20, 2026; incorporated municipalities may apply their own rules.

    subdivision threshold: >= 2 parts (subject to listed statutory and regulatory exceptions)

    “The owner of a tract of land located within Fannin County, and outside the limits of an incorporated municipality, must have a plat of the subdivision prepared if the owner divides a tract into two or more parts to lay out: (i) a subdivision of the tract, including an addition; (ii) lots ; or (iii) streets, alleys, squares, parks or other parts of the tract intended to be dedicated to public use or for the use of purchasers or owners of lots fronting on or adjacent to the streets, squares, parks or other parts.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Division of land into two or more parts, lots, streets, alleys, squares, parks, or other public-use areas in unincorporated Fannin County.
      “must have a plat of the subdivision prepared”
  • Driveway accessLimited

    Driveway culverts and driveway-related work within Fannin County road right-of-way.

    • A construction permit must be approved before soil-disturbing driveway culvert work in county road or drainage property.
    • A completed permit-to-work form, drawings, and any applicable traffic-control or detour plans must be submitted.
    • The permit fee is set annually by Commissioners Court.
    • For driveway culvert installation, the owner must mark the proposed location, notify the Environmental Development Service Office, provide plans and a completed application, obtain precinct Commissioner approval, pay the permit fee, and call for inspection.
    • An existing culvert may be replaced, lengthened, or increased in diameter without obtaining a permit or paying a fee, but the precinct Commissioner must be contacted before changes.

    precinct Commissioner response period for required culvert size and stakes: 5 working days

    “The permit fee will be set annually by the Fannin County Commissioners’ Court during their regular budget adoption process.”
  • Building in a floodplainLimited

    Proposed construction or development on property determined by Fannin County to be located in a floodplain or identified flood hazard area.

    • The applicant must provide a copy of the plans for the proposed construction if the property is determined to be located in a floodplain.
    • The application requires, at minimum, a Fannin County Floodplain Application, applicable FIRM, BFE certificate, existing and proposed topographical information, and subdivision plans if applicable.
    • The $30 floodplain development permit fee is non-refundable and is invoiced and paid through the MGO portal.
    • The application must be complete and all required documents must be uploaded; missing required information or documents will result in denial.
    • Applications expire one year from the date of purchase and are non-refundable.
    • Additional federal, state, or other local permits may be required.
    • The source establishes a floodplain-specific application and plan-submission condition; it does not by itself establish a countywide mandate covering every proposed development or construction regardless of location.

    floodplain development permit fee: 30 USD (non-refundable; invoiced and paid through the MGO portal)

    “IF PROPERTY IS DETERMINED TO BE LOCATED IN A FLOODPLAIN, THE APPLICANT WILL PROVIDE A COPY OF THE PLANS FOR THE PROPOSED CONSTRUCTION.”
  • Short-term rentalsLimited

    Short-term RV-park use within the Bois d'Arc Lake zoning area, which is the area within 5,000 feet of the lake shoreline.

    • The Bois d'Arc Lake zoning amendment log states that RV Park was changed to short term, with a 60-day stay in a 12-month period.
    • The amendment log states that a special use permit was added to the Commercial District for an RV park.
    • The Bois d'Arc Lake zoning area is within 5,000 feet of the shoreline, and the zoning regulations apply there.
    • This claim addresses the documented RV-park short-term provision and does not establish a general short-term-rental rule for ordinary dwelling units.

    maximum stay: 60 days in a 12-month period

    “A parcel of land designed, improved, or intended to be used and exclusively used for short term occupancy by recreational vehicles in designated spaces. [...] No recreational vehicle may remain at the RV Park for more than sixty (60) calendar days during any twelve (12) month period.”
  • Permit feesPublished (with conditions)

    Subdivision plat applications administered by Fannin County Development Services.

    • Preliminary plat fees are $500 plus $50 per lot, plus engineering fees.
    • Final plat fees are $250 plus $50 per lot, plus engineering fees.
    • Short/minor plat fees are $250 plus $50 per lot, plus engineer fees.
    • A flood study review fee of $2,000 applies where required.
    • Construction inspection fee is $1,000 or 2% of construction cost for streets and drainage improvements.
    • Re-inspection fee is $100 per trip.
    • The cited fee schedule is labeled December 2023; no separate effective date is stated.

    preliminary plat county base fee: 500 USD (plus $50 per lot and engineering fees) · preliminary plat per-lot fee: 50 USD/lot (plus county base fee and engineering fees) · final plat county base fee: 250 USD (plus $50 per lot and engineering fees) · short/minor plat base fee: 250 USD (plus $50 per lot and engineer fees) · flood study review fee: 2000 USD · construction inspection fee: $1,000 or 2% of construction cost USD (for streets and drainage improvements) · re-inspection fee: 100 USD/trip

    “Preliminary Plat o County Base fee $500 + $50/Lot o Engineering Fees”
  • Permit processPublished (with conditions)

    County Development Services permitting and subdivision application process.

    • Applicants must sign in or create an MGO Connect account.
    • The Development Services page links subdivision regulations, short plat, replat, preliminary/final checklists, and a fee schedule.
    • The page separately directs applicants to MGO for permitting and application needs.
    “For your permitting and application needs, please sign in or create an account here: MGO Connect”
    One more reviewed finding on this topic
    • Published (with conditions) — Fannin County permitting and application processes, including floodplain development permits and other Development Services applications.
      “We have moved to online permitting and payments! For your permitting and application needs, please sign in or create an account here: MGO ONLINE”

Texas rules that apply here

  • Owner-builder exemptionConditional

    An individual acting as their own contractor or building new residential construction in an unincorporated area of a county subject to Texas Local Government Code Chapter 233, Subchapter F, and intending to use the residence as the individual's primary residence.

    • The exemption is from the penalty under Section 233.157 for failure to provide required notices; it does not eliminate applicable building-code inspection requirements.
    • The new residential construction must be built by the individual or the individual must act as the individual's own contractor.
    • The individual must intend to use the residence as the individual's primary residence.
    • Subchapter F applies only to a county that has adopted a resolution or order requiring its application and that is located within 50 miles of an international border or has a population of more than 100.
    • New residential construction includes a single-family house or duplex on a vacant lot and certain additions increasing the existing building's square footage or value by more than 50 percent.
    • Municipal building codes control in a municipality's extraterritorial jurisdiction when applicable.
    “An individual who fails to provide proper notice in accordance with Sections 233.154(b) and (c) is not subject to a penalty under this subsection if: (1) the new residential construction is built by the individual or the individual acts as the individual's own contractor; and (2) the individual intends to use the residence as the individual's primary residence.”
    3 more reviewed findings on this topic
    • Conditional — An individual building new residential construction in an unincorporated area of a county to which Texas Local Government Code Chapter 233, Subchapter F applies.
      “the individual acts as the individual's own contractor; and (2) the individual intends to use the residence as the individual's primary residence.”
    • Conditional — An owner performing electrical, plumbing, or air-conditioning and refrigeration work on the owner's own residence or homestead in Texas.
      “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed as electricians.”
    • Conditional — Electrical work on a dwelling owned and occupied by the property owner in Texas.
      “A person who perform electrical work on a dwelling that they own and reside in is not required by the state to be licensed”
  • Building code adoptedPartial

    Industrialized housing and buildings, modules, and modular components governed by the Texas Industrialized Housing and Buildings program.

    • The mandatory state code adoption applies to industrialized housing and buildings, modules, and modular components, not all construction statewide.
    • The effective date is July 1, 2024.
    • The International Existing Building Code applies to alterations of portable industrialized buildings.
    • Manufacturers already certified for Texas must have design-package documents reviewed and approved to the new editions with an approval date on or after July 1, 2024, unless the manufacturer elected to transition before the effective date under Department rule 70.70(a)(5)(B).
    • Construction begun on or after July 1, 2024 must comply with the new code editions and approved design packages.
    • Construction begun before July 1, 2024, or before a manufacturer's effective transition date, must meet the stated completion, inspection, and labeling deadline to remain eligible for a Texas decal.

    effective date: 2024-07-01 · International Building Code: 2021 Edition (including appendices C, F, and K) · International Residential Code: 2021 Edition (including appendices AG, AH, AK, AP, AQ, and AT) · International Fuel Gas Code: 2021 Edition · International Mechanical Code: 2021 Edition · International Plumbing Code: 2021 Edition · International Energy Conservation Code: 2015 Edition · National Electrical Code: 2020 Edition · International Existing Building Code: 2021 Edition (for alterations of portable industrialized buildings)

    “July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
    One more reviewed finding on this topic
    • Partial — Industrialized housing and buildings, modules, and modular components built for Texas under the Industrialized Housing and Buildings program.
      “Effective July 1, 2024, all industrialized housing and buildings, modules, and modular components shall comply with the following codes, as amended in §70.101 of the IHB Rules:”
  • Well permitLimited

    Drilling, equipping, operating, or completing a water well, or substantially altering a well or well pump, where the well is within a groundwater conservation district in Texas.

    • A groundwater conservation district must require a permit except as provided by Texas Water Code §36.117.
    • A district may not require a permit or permit amendment for maintenance or repair that does not increase production capability above the authorized or permitted production rate.
    • Permit applications must be in writing and sworn.
    • Whether a particular private well is exempt or subject to additional district requirements depends on the applicable groundwater conservation district's rules.

    permit application form: in writing and sworn

    “Except as provided by Section 36.117, a district shall require a permit for the drilling, equipping, operating, or completing of wells or for substantially altering the size of wells or well pumps.”
  • county zoning authorityLimited

    Texas counties adopting zoning regulations for specified unincorporated or otherwise specially defined areas.

    • Chapter 231 does not grant a general statewide county zoning power; authority is provided through geographically or subject-matter limited subchapters.
    • For Padre Island, the authority applies in Cameron or Willacy County outside a municipality and within two miles of a publicly owned park or recreational development, or within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.
    • Other Chapter 231 subchapters address special areas including the Amistad Recreation Area in Val Verde County, military zones, certain lakes, the El Paso Mission Trail Historical Area, Lake Somerville, and Falcon Lake in Zapata County.
    • The cited statute was enacted effective September 1, 1987; the Falcon Lake subchapter was added effective June 15, 2007, and amended effective September 1, 2009.

    Padre Island distance from publicly owned park or recreational development: <= 2 miles (Area must be outside a municipality and in Cameron or Willacy County.) · Padre Island distance from beach, wharf, or bathhouse: <= 2 miles (The beach, wharf, or bathhouse must be used by at least 500 persons annually.)

    “This subchapter applies to the areas of Padre Island located in Cameron or Willacy County and located: (1) outside a municipality but within two miles of a publicly owned park or recreational development; or (2) within two miles of a beach, wharf, or bathhouse used by at least 500 persons annually.”
    One more reviewed finding on this topic
    • Limited — County zoning authority over unincorporated land in Texas, where a specific statutory grant applies.
      “As you suggest, a county has very limited and specific zoning authority, and none that may be used to regulate construction or operation of the proposed facility.”
  • county building authorityLimited

    Texas counties adopting and enforcing fire-code building permits for specified buildings in unincorporated areas and applying residential building-code standards in certain counties.

    • Under Section 233.061, the county must have a population over 250,000 or be adjacent to a county with a population over 250,000.
    • Under Section 233.062, the fire code applies only to commercial establishments, public buildings, and multifamily residential dwellings consisting of four or more units constructed in an unincorporated area.
    • The fire code does not apply to an industrial facility having a fire brigade that conforms to Occupational Health and Safety Administration requirements.
    • A covered applicant must submit a plan and a commissioners-court-set application fee; the county must issue or deny the permit within 30 days, and failure to act within 30 days approves the construction for purposes of the subchapter.
    • The fire code must conform to the International Fire Code or Uniform Fire Code as those codes existed on May 1, 2005, or establish protective measures exceeding those standards; later editions may be adopted.
    • Residential standards under Section 233.152 apply only if the county adopts a resolution or order and the county is within 50 miles of an international border or has a population over 100.
    • Those residential standards apply only to new single-family-house or duplex construction beginning after September 1, 2009; manufactured or modular structures governed by Occupations Code Chapters 1201 or 1202 are excluded from the definition of new residential construction.
    • A municipality's building code controls in its extraterritorial jurisdiction, and Section 233.152 does not authorize county prior approval of new residential construction or county zoning regulations.
    • Fire-code inspection and permit fees may be charged under a fee schedule based on building type, limited to amounts necessary to administer and enforce the subchapter; inspection fees must be reasonable and reflect approximate inspection costs.

    county population threshold for fire-code authority: > 250000 persons (A county adjacent to a county over 250,000 also qualifies.) · multifamily residential dwelling threshold: >= 4 units (The fire code applies only to covered buildings constructed in an unincorporated area.) · residential-code border distance: <= 50 miles (Alternative qualification is county population over 100.) · application decision period: 30 days (If the commissioners court does not issue or deny the permit within 30 days after receiving the application and fee, construction is approved for purposes of the subchapter.) · residential standards effective construction date: > 2009-09-01 (Applies only to new residential construction that begins after September 1, 2009.)

    “The commissioners court of a county with a population of over 250,000 or a county adjacent to a county with a population of over 250,000 may adopt a fire code and rules necessary to administer and enforce the fire code. [...] The fire code applies only to the following buildings constructed in an unincorporated area of the county: (1) a commercial establishment; (2) a public building; and (3) a multifamily residential dwelling consisting of four or more units.”
    One more reviewed finding on this topic
    • Limited — County fire-code adoption and building-permit authority for specified buildings in unincorporated areas of qualifying Texas counties, including multifamily residential dwellings of four or more units.
      “The commissioners court of a county with a population of over 250,000 or a county adjacent to a county with a population of over 250,000 may adopt a fire code and rules necessary to administer and enforce the fire code.”

Still unanswered

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

  • Certificate of occupancy — Certificates of occupancy for buildings in Fannin County.
  • Tiny homes — Occupancy of a tiny home on private land in Fannin County, especially unincorporated areas.

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 Fannin County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Texas’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 wellExempt up to a limit

Texas groundwater is governed by the rule of capture; a Groundwater Conservation District must exempt qualifying domestic/livestock wells and may not restrict their production, but well registration and spacing rules can still apply and the exemption does not cover wells serving a platted subdivision.

Limit: Domestic/livestock well exempt from GCD production permitting if on a tract >10 acres AND incapable of producing >25,000 gal/day (Tex. Water Code §36.117)

Texas Water Code §36.117 / TWDB ↗
  • North-Central Texas Trinity & Woodbine Aquifers Priority Groundwater Management Areapartial of county

    TCEQ-designated DFW-region Trinity/Woodbine critical-groundwater area; drives GCD coverage. Domestic/livestock wells remain exempt but spacing/registration may apply.

    TCEQ — Priority Groundwater Management Areas ↗

Hybrid state (appropriation + riparian). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Texas state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Fannin County, Texas

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

Fannin County scores 68/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and a stronger property-autonomy legal backdrop. Watch-outs: elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Fannin County, Texas?

Fannin County does not require a county building permit for a home in unincorporated areas, and it enforces county zoning. Onsite septic is permitted by Fannin County Environmental Development Department (OSSF). 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 Fannin County, Texas?

Land in Fannin County runs about $3,952 per acre, based on the latest county data.

What is the water situation in Fannin County?

Fannin County gets about 44.2" of rain a year, with severe drought in roughly 19.5% of years. On water rights, Fannin County lies in the North-Central Texas Trinity & Woodbine Aquifers Priority Groundwater Management Area — TCEQ-designated DFW-region Trinity/Woodbine critical-groundwater area; drives GCD coverage. Domestic/livestock wells remain exempt but spacing/registration may apply..

How remote is Fannin County?

A representative private-land location has about 4,896 people within a 30-minute drive and 6,680,372 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Fannin compares in Texas

Compare side-by-side →See all 254 Texas counties ranked →