Navarro County, TX Building Permits, Zoning & Septic Rules

Unincorporated Navarro County, Texas requires county permits for development and applies an adopted residential code to qualifying new houses, duplexes and major additions¹². The Richland Chambers Lake area has an additional residential building-permit and zoning process³⁴. Septic systems go through the county's OSSF program⁵.

At a glance

Building permit: County development permitting applies in unincorporated areas; the lake zoning area requires a residential building permit¹³
Zoning: Nine zoning districts apply within 5,000 feet of the normal Richland Chambers Reservoir shoreline⁴
Septic permit: Required; the county OSSF program reviews plans, issues authorization and inspects installation⁵⁶
Home inspections: At least three inspections for covered new homes, duplexes and major additions⁷
Owner-builder exemption: Not documented on the county's official pages⁸
Driveway onto a state highway: Needs a TxDOT Form 1058 access-driveway permit⁹

Who to call

Planning & zoning

Navarro County Planning & Development

Zoning, building permits within the Richland Chambers Lake zoning jurisdiction, development permits elsewhere in the unincorporated county, and subdivision/plat review.

(903) 875-3311

601 N. 13th St., Suite 1, Corsicana, TX 75110

Septic permits

Navarro County OSSF Program (Planning & Development)

OSSF (septic) permits and inspections for unincorporated Navarro County, as TCEQ's authorized agent.

(903) 875-3311

601 N. 13th St., Suite 1, Corsicana, TX 75110

Floodplain permits

Navarro County Addressing Coordinator (911 Addressing / Floodplain Development Permits)

911 addressing and floodplain development permits for unincorporated areas of Navarro County.

(903) 875-3311

601 N. 13th St., Suite 1, Corsicana, TX 75110

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

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

Yes. Navarro County Planning & Development issues construction and development permits in unincorporated areas¹. The county has also adopted the International Residential Code published as of May 1, 2008 for new single-family houses and duplexes on vacant lots and for additions that increase an existing residence's square footage or value by more than 50 percent². Manufactured homes governed by Texas Occupations Code Chapter 1201 and modular homes governed by Chapter 1202 are excluded from that county order². Inside the Richland Chambers Lakeshore Area, a residential building-permit application requires ownership evidence, construction plans, a site or survey plan and the fee; separate trade permits may also be required³.

Who is the Navarro County building department, and how do you reach them?

Navarro County Planning & Development is at 601 N. 13th St., Suite 1, Corsicana, TX 75110, phone (903) 875-3311¹⁰. Office hours run Monday through Friday, 8:00 a.m. to 4:30 p.m., closed for lunch from 12 to 1¹⁰. For covered homes, duplexes and additions in unincorporated Navarro County, the builder hires an authorized inspector for at least three inspections: foundation before concrete, framing and mechanical systems before wall covering, and completion⁷. A lake-area residential building needs all required inspection forms before the county issues its certificate of completion¹¹. The county warns that fees double when construction starts before permits are issued¹⁰.

Does Navarro County have zoning?

Navarro County publishes nine zoning-district classes for land within 5,000 feet of the normal Richland Chambers Reservoir shoreline at 315 feet MSL, and Planning & Development maintains the zoning map⁴. The county processes zoning changes and special-use permits in that lakeshore area¹². Outside the lake district, Texas law does not grant counties general zoning authority, but that does not remove Navarro County's separate residential-code, inspection, development-permit, subdivision, septic or floodplain requirements¹³². Ask Planning & Development for the parcel's mapped district and allowed use before relying on a listing's description.

How do septic permits work in Navarro County?

Navarro County's OSSF program permits and inspects septic systems in unincorporated areas⁵. An application requires a verified 911 address, technical and planning materials, a site and soil evaluation, directions, the fee and original documents; approval produces an Authorization to Construct that may remain valid for one year subject to its conditions⁶. Texas generally requires a permit to construct, alter, repair or extend an OSSF, with a narrow 10-acre exemption only when every listed condition is met, including licensed site evaluation, one dwelling and at least 100 feet between every system component and a property line¹⁴. Only about 2.7% of county soils lack severe limitations for a conventional drain field, so make the site evaluation an early contingency rather than assuming a standard system will work¹⁵.

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

In the Richland Chambers Lake zoning area, Navarro County lists a Temporary Use Permit for an RV, but the published information does not establish its duration or occupancy conditions¹⁰. We could not confirm a countywide rule for long-term RV living or tiny-home occupancy. A tiny home built as a new conventional single-family house in unincorporated Navarro County would still encounter the county's adopted residential-code and inspection rules; qualifying manufactured and modular homes are excluded from that particular construction order². Before buying or moving a unit, give Planning & Development the parcel address and ask about the mapped zoning district, structure classification, utilities and occupancy.

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

Ask Planning & Development whether the parcel is in the Richland Chambers Lake zoning area and which county permit application applies¹⁴.
Obtain a verified 911 address and complete the site and soil evaluation needed for the OSSF application⁶.
Determine flood status; any construction in an unincorporated Navarro County floodplain requires a county flood permit¹⁶.
Submit complete construction and OSSF materials before work begins; the county issues an Authorization to Construct after approving the septic application³⁶.
Arrange the required residential inspections with an authorized inspector, including foundation, framing and completion stages⁷.
For a lake-area home, submit all inspection forms and obtain the county's certificate of completion¹¹.
If access meets a state highway, submit TxDOT Form 1058 and notify TxDOT before right-of-way construction⁹.

What to check before you buy land in Navarro County

Start with septic feasibility: only about 2.7% of Navarro County soils lack severe limitations for a conventional drain field¹⁵. Check the survey and flood status because floodplain land is removed from overall lot area when the county calculates subdivision minimum lot size, and floodplain construction needs a county permit¹⁶. If land will be divided into two or more tracts, platting is required when any resulting tract is 10 acres or less or land is dedicated to common use¹⁷. The county has not published enough information to confirm a countywide private-well permit or utility-connection rule, so ask Planning & Development and the serving utility before closing. Navarro County averages about 41.2 inches of precipitation annually and has experienced severe drought in about 16.3% of years¹⁸¹⁹.

Watch-outs

Navarro County doubles its listed fees when construction begins before permits are issued¹⁰.
A lake-area residential permit becomes void if authorized work is not completed within 12 months after work begins unless special conditions say otherwise³.
Final plat approval expires unless the plat is recorded with the County Clerk within 60 days¹⁷.

Sources

Written September 29, 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.

How Navarro County scores

Seclusion37100% ev.

Self-Sufficiency44100% ev.

Admin Boringness4490% ev.

Durability50100% ev.

Property Autonomy71100% ev.

Carry Cost77100% 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 →

$233kTypical home

1.3%Property tax

$3,770Land / acre

41.2"Annual rain

16.3% of yrsSevere drought

45.7 / yr (+30.9)Mid-century 100°F days

23.3 daysMid-century dry spell

2.34" (+4.3%)Mid-century 1-day rain

1.39×Wildfire change factor

100%Forward climate coverage

$1,999Home insurance / yr

-0.5% / yrInsurance growth

0%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

32,006People within 30 min

9,439,308People within 2 hr

33,389Radius comparison (15 mi)

55.1People / sq mi

2.2%Federal land

100%Land at 15% slope or less

2.7%Septic soil without severe limits

16,006 acWorkable land screen

22.3%Wooded land

13.3 tonsBiomass / forest ac

66.4°FAvg temp

Answers from the rulebook for Navarro County

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

Navarro County rules

Building permitRequired
Residential building construction within the Richland-Chambers Lakeshore Area 5,000-foot zoning jurisdiction.
- Incomplete applications are not accepted for review.
- Separate permits may be required for electrical, plumbing, heating, ventilation, or air conditioning.
- The permit becomes null and void if authorized work is not completed within 12 months after work commences unless special conditions state otherwise.
- The application requires proof of ownership, construction plans, a site/survey plan, and a permit fee.
permit validity after work commences: 12 months (unless otherwise stated in special conditions)
“The following items are required to complete the Building Permit:”
Residential Building / Construction Permit ↗Re-checked Sep 26, 2026
Building code adoptedAdopted (with conditions)
New single-family houses or duplexes on vacant lots, and qualifying additions, in unincorporated Navarro County.
- Manufactured homes constructed under Texas Occupations Code Chapter 1201 and modular homes constructed under Chapter 1202 are excluded.
- An addition is covered when it increases existing residential square footage or value by more than 50 percent.
- The order applies to construction begun after the order's effective date; the document does not state the date legibly.
adopted code: International Residential Code published as of May 1, 2008 · addition threshold: > 50 percent (square footage or value of existing residential building)
“must conform to the International Residential Code published as of May 1, 2008.”
Order Requiring Application of Subchapter F, Chapter 233, Texas Local Government Code ↗Re-checked Sep 26, 2026
InspectionsRequired
New single-family houses, duplexes, and qualifying additions in unincorporated Navarro County.
- Three inspections are required at foundation before concrete, framing and mechanical systems before drywall or other interior wall covering, and completion.
- For remodeling where square footage or value increases by more than 50 percent, inspections are performed as necessary based on the scope of work.
- The builder contracts with an authorized inspector from the listed professional categories.
minimum inspections: >= 3 inspections (qualifying construction)
“a minimum of three inspections must be performed”
Order Requiring Application of Subchapter F, Chapter 233, Texas Local Government Code ↗Re-checked Sep 26, 2026
Certificate of occupancyRequired
Residential buildings covered by the Navarro County lake-area residential building permit.
- The document calls this a certificate of completion rather than a certificate of occupancy.
- Issuance is contingent on submission of all required inspection forms.
“A CERTIFICATE OF COMPLETION MUST BE ISSUED”
Residential Building / Construction Permit ↗Re-checked Sep 26, 2026
Zoning districtsPublished (with conditions)
Richland-Chambers Lakeshore Area zoning districts.
- The ordinance identifies nine district classes and states that the zoning map is maintained by the county Planning and Development Office.
- The district schedule applies within 5,000 feet of the normal Richland-Chambers Reservoir shoreline at 315 feet MSL.
number of zoning district classes: 9 districts · lake-area zoning distance: 5000 feet (from normal shoreline at 315 feet MSL)
“is hereby divided into nine (9) classes of Use Districts”
Richland-Chambers Lakeshore Area Zoning Ordinance ↗Re-checked Sep 26, 2026
Subdividing landRegulated (with conditions)
Subdivision and platting in Navarro County.
- A tract divided into two or more tracts must be platted when any resulting tract is 10 acres or less or when land is dedicated to common use.
- The application requires plans, utility agreements, service agreements, soil survey, and waste disposal plan among other materials.
- Final-plat approval expires unless recorded with the County Clerk within 60 days after final approval.
plat trigger resulting tract size: <= 10 acres (when dividing into two or more tracts)
“A subdivision must be platted if a tract of land is to be divided into 2 or more tracts”
Subdivision Application Form ↗Re-checked Sep 26, 2026
Building in a floodplainRequired
Development and construction in floodplains in unincorporated Navarro County.
- Subdivision proposals in flood zones must be consistent with Navarro County Floodplain Regulations.
- Plats must show one-foot contour intervals and finished-floor elevations for lots in the floodplain.
- Floodplain area must be subtracted from overall lot size for minimum-lot-size calculations.
- The county page identifies floodplain permits for unincorporated areas.
“A flood permit will be required from Navarro County for any construction in the floodplain.”
Residential Building / Construction Permit ↗Re-checked Sep 26, 2026
Permit processPublished (with conditions)
County OSSF permitting and related Planning & Development permit processes.
- OSSF applications require a verified 911 site address, technical information, planning materials, site and soil evaluation, directions, appropriate fee, and original documents.
- Applications received by mail are reviewed within 30 working days.
- Plan-review appointments must be scheduled and confirmed 24 hours in advance.
- Upon approval, an Authorization to Construct is issued; it may be valid for one year subject to stated conditions.
mail application review time: <= 30 working days · plan-review appointment notice: >= 24 hours · authorization to construct validity: 1 year (pending stated conditions)
“Upon approval, an Authorization to Construct will be issued.”
On-Site Sewage Facility Permitting Procedures ↗Re-checked Sep 26, 2026
County-wide zoningPresent
The county maintains and enforces the Richland Chambers Lakeshore Area Zoning Ordinance, processing zoning changes and special-use permits (zoning concentrated around the lake).
Navarro County Planning & Development ↗Scouted from the county site, not yet independently re-checked

Texas rules that apply here

Who permits septicMixed
On-site sewage facilities, including septic systems, throughout Texas
- In most areas, local governments act as TCEQ-authorized agents and administer the OSSF program.
- The TCEQ regional office is the permitting authority where a local jurisdiction has not been authorized.
- Local permitting programs may be more stringent than state minimums.
“TCEQ is not often the OSSF permitting authority. [...] The TCEQ regional office will be the permitting authority in locations where a local jurisdiction has not been authorized.”
Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 12, 2026
Septic permitRequired
Construction, installation, alteration, extension, or repair of an OSSF in Texas
- A permit and approved plan are required to construct, alter, repair, extend, and operate an OSSF.
- A 10-acre exemption may apply only if all listed conditions are met: site evaluation by a TCEQ-licensed site evaluator or professional engineer; single-family dwelling on at least 10 acres; no nuisance or groundwater pollution; all OSSF parts at least 100 feet from the property line; effluent disposed of on the property; and the single-family dwelling is the only dwelling on the tract.
- Emergency repairs listed by TCEQ do not require a permit but must be reported in writing to the permitting authority within 72 hours after repairs begin.
- Grandfathered systems may also be exempt if the stated conditions are met.
minimum tract size for 10-acre exemption: >= 10 acres (single-family dwelling and all other TCEQ conditions must be met) · minimum OSSF distance from property line for 10-acre exemption: >= 100 feet (all parts of the OSSF) · emergency repair reporting deadline: <= 72 hours (after repairs have begun; written report to permitting authority)
“A permit is required to construct, install, alter, extend, or repair an OSSF. [...] An OSSF may be exempt from permitting if it complies with all other requirements, including planning, construction, and installation standards of 30 TAC 285 AND meets the “10 acre rule”:”
Getting a Permit for an OSSF - Such as a Septic System ↗Re-checked Sep 12, 2026
Septic inspectionLimited
OSSF installation and, where applicable, maintenance inspections in Texas
- Authorized agents or their designated representatives inspect system installation.
- Some permitting authorities impose more stringent requirements.
- Maintenance-provider inspection and reporting requirements apply to systems and circumstances governed by 30 TAC §285.91(4).
- Electronic monitoring may reduce reporting to every six months where the stated monitoring conditions apply.
reduced maintenance reporting interval with qualifying electronic monitoring: 6 months (only where the system uses the specified electronic monitoring, automatic notification, and disinfection monitoring)
“Many times, the AA has a "designated representative" (DR) to assist them with their responsibilities, which include reviewing plans for constructing, altering, extending or repairing each OSSF; issuing permits; and inspecting system installation. [...] If the system uses an electronic monitor, automatic radio or telephone to notify the maintenance provider of system or component failure and to monitor the amount of disinfection in the system, reporting may be reduced to every six months.”
Basics for Septic Systems ↗Re-checked Sep 12, 2026
Driveway accessRequired
New or modified access driveways connecting property to a Texas state highway right of way.
- A local public agency may receive access driveway permitting authority for state highways, but TxDOT approval remains required for drainage impacts on the state highway system before local approval.
- No access driveway is permitted within a flared or widened right-of-way section at an intersection of a state highway with another highway, road, or street.
- All entrances and exits, including radii, must be confined within the permittee's property frontage.
- One-way 45-to-90-degree driveways are permitted for connections to one-way frontage roads or lane-divided highways; otherwise the driveway angle must be 75 to 90 degrees.
- ADAAG and Texas Accessibility Standards apply.
private residential driveway maximum width: <= 24 feet (Except as increased by permissible radii.) · driveway-to-pavement radius: >= 15 feet
“A driveway must be constructed in accordance with a fully executed driveway permit”
Section 4: Driveway Permits, Design, and Materials ↗Re-checked Sep 12, 2026
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.”
Local Government Code Chapter 231, County Zoning Authority ↗Re-checked Sep 21, 2026
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.”
Local Government Code Chapter 233, County Regulation of Housing and Other Structures ↗Re-checked Sep 21, 2026

Still unanswered

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

Tiny homes — Tiny-home occupancy in Navarro County.
Off-grid sanitation — Off-grid sanitation systems in Navarro County.
Well permit — Private groundwater wells in Navarro County.
Mandatory utility hookup — Water and sewer utility connection requirements for county development.
Agricultural exemption — Agricultural construction or land-use exemptions in Navarro County.

1 more unanswered

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.

Living off-grid in Navarro County, Texas

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

Navarro County scores 54/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and a stronger property-autonomy legal backdrop. Watch-outs: about 32,006 people within a 30-minute drive.

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

Navarro County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Navarro County Environmental Division / Planning & Development (OSSF authorized agent under TCEQ). 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 Navarro County, Texas?

Land in Navarro County runs about $3,770 per acre, based on the latest county data.

What is the water situation in Navarro County?

Navarro County gets about 41.2" of rain a year, with severe drought in roughly 16.3% of years.

How remote is Navarro County?

A representative private-land location has about 32,006 people within a 30-minute drive and 9,439,308 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.

Building permits, zoning and septic rules in Navarro County, Texas

At a glance

Who to call

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

Who is the Navarro County building department, and how do you reach them?

Does Navarro County have zoning?

How do septic permits work in Navarro County?

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

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

What to check before you buy land in Navarro County

Watch-outs

Sources

Navarro County in Texas

How Navarro County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Navarro County

Navarro County rules

Texas rules that apply here

Still unanswered

Living off-grid in Navarro County, Texas

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

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

How much does land cost in Navarro County, Texas?

What is the water situation in Navarro County?

How remote is Navarro County?

How Navarro compares in Texas