Bolthole Index

Montgomery County, Texas

Zoning, building permits and septic rules in Conroe, Texas

Conroe, Texas has no zoning ordinance: the city does not regulate land use1. Building permits and inspections inside city limits still come from the City of Conroe's Building Inspections and Permits Department23. Septic permits for addresses inside the city are unconfirmed; Montgomery County Environmental Health runs the county's septic program4. Land outside city limits follows the county's rules instead.

At a glance

Zoning
None: the City of Conroe has no formal zoning ordinance1
Building permit
Issued by the City of Conroe, with inspections on site work and construction23
Certificate of occupancy
Required before a building or structure is used or occupied5
Subdivision
Regulated under the city's Subdivision Ordinance, Chapter 946
Septic
Unconfirmed inside city limits; the county runs the septic program7
Minimum home size, lot size, setbacks
No zoning-based limits; building codes and city ordinances still apply8910

Who to call

Building permits

City of Conroe Building Inspections and Permits Department

Building permits, inspections and certificates of occupancy inside Conroe city limits. Applications and inspection requests go through the city's online portal.

(936)-522-3000

[email protected]

300 W. Davis Conroe, Texas 77301

Septic permits

Montgomery County Environmental Health Services (On-Site Sewage Facilities)

Septic (on-site sewage facility) permits for Montgomery County as the local agent for the state.

936-539-7839

501 N Thompson Street, Suite 101, Conroe, Texas 77301

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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Does Conroe, Texas have zoning?

No. The City of Conroe states that it does not regulate land use and has no formal zoning ordinance1. That means no zoning districts, and no zoning-based minimum home size, minimum lot size, setbacks, lot coverage or building height inside city limits89101112.

No zoning does not mean no rules. Construction inside Conroe stays under the adopted building codes, the City Code of Ordinances and the city's other adopted codes1. We could not confirm the city's rules for living in an RV or tiny home, or for accessory dwellings, so call the Building Inspections and Permits Department before you plan on any of them2.

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

Yes, building inside Conroe means dealing with the City of Conroe, not Montgomery County. The city's Building Inspections and Permits Department administers and enforces building codes, and permit applications and inspection requests go through its online portal2. Within the city limits, all site work and building construction requires inspection by city engineering or building inspectors3.

The city's Development Guide points applicants to the Residential Building Permit Application for submittal requirements and fees; we could not confirm a fee amount13. Inspection requests must be made at least 24 hours ahead and before 4:00 p.m.3. No building or structure may be used or occupied until the Building Official issues a Certificate of Occupancy5.

How do septic permits work in Conroe, Texas?

We could not confirm who issues septic permits for lots inside Conroe city limits, or whether the city requires one. Montgomery County Environmental Health Services serves as the local agent for the state's septic program and issues septic permits for the county74. Whether that office handles a given address inside the city is a question for the city's permit office and the county office together.

Where a septic system is allowed, the county requires a site evaluation, soil analysis and a design by a registered sanitarian or professional engineer, and it will not permit systems in the regulatory floodway14. Montgomery County's soils matter here: only about 2.2% of its soils rate as not limited for a conventional drain field, so most lots need a site evaluation or an engineered system15.

Can you subdivide or split a lot in Conroe?

Land inside Conroe must comply with the Subdivision Ordinance, Chapter 94, before it is developed6. A building permit will not issue until the parcel complies with the applicable Chapter 94 requirements6. A subdivision occurs whenever a parcel is divided, whether or not ownership transfers6.

One exception: a division into parts larger than 5 acres, each with public-street access and no proposed public improvements, does not have to be platted6. Because Conroe has no zoning, the subdivision ordinance and building rules do the work that zoning does elsewhere.

Building a home in Conroe: the steps, in order

  1. Confirm the property is inside Conroe city limits, not just under a Conroe mailing address. Inside the city, the city's rules apply; outside, Montgomery County's apply16.
  2. If the parcel is being divided, check the Subdivision Ordinance, Chapter 94, first6.
  3. Apply for the building permit with the City of Conroe's Building Inspections and Permits Department through its online portal2.
  4. Request inspections through the portal, at least 24 hours ahead and before 4:00 p.m.3.
  5. Ask the city and Montgomery County Environmental Health how sewage will be handled if public sewer is not available4.
  6. Get the Certificate of Occupancy before anyone moves in5.

What stays with Montgomery County, and what to check before you buy

The county's rules apply to unincorporated land, not to land inside Conroe. For land outside city limits, see the Montgomery County page: the county has no zoning and no countywide building code17, but unincorporated structures need a county development permit16, and county floodplain rules cover unincorporated areas18.

The county also runs the septic program4. Montgomery County's effective property tax rate is 1.6%19. We could not confirm the city's rules on wells, driveways, floodplain development or short-term rentals, so ask the city's Building Inspections and Permits Department about each before you close2.

Watch-outs

  • A Conroe mailing address does not put a parcel inside city limits; land outside the city follows Montgomery County's rules, which differ from the city's16.
  • No zoning inside Conroe does not mean no rules: building codes, the City Code of Ordinances and the Subdivision Ordinance still apply16.
  • We could not confirm who issues septic permits inside city limits, or the city's rules on RVs, tiny homes, wells and driveways; ask the city's permit office at2 and the county septic office at4.

Sources

  1. cityofconroe.org (Conroe), quoted and re-checked
  2. City of Conroe Building Inspections and Permits Department (cityofconroe.org)
  3. City of Conroe Development Guide (Conroe), quoted and re-checked
  4. Montgomery County Environmental Health Services (On-Site Sewage Facilities) (mctx.org)
  5. City of Conroe Development Guide (Conroe), quoted and re-checked
  6. City of Conroe Development Guide (Conroe), quoted and re-checked
  7. On-Site Sewage Facility, quoted and re-checked
  8. City of Conroe Development Guide (Conroe), quoted and re-checked
  9. City of Conroe Development Guide (Conroe), quoted and re-checked
  10. City of Conroe Development Guide (Conroe), quoted and re-checked
  11. City of Conroe Development Guide (Conroe), quoted and re-checked
  12. City of Conroe Development Guide (Conroe), quoted and re-checked
  13. City of Conroe Development Guide (Conroe), quoted and re-checked
  14. How to Obtain a Septic Permit and On-Site Sewage Facility Fees, quoted and re-checked
  15. 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
  16. Montgomery County Development Permit Procedures, quoted and re-checked
  17. Montgomery County PY 2023 Consolidated Annual Performance and Evaluation Report, quoted and re-checked
  18. Montgomery County Flood Plain Management Regulations, quoted and re-checked
  19. Effective property tax rate: Bolthole Index county data

Written October 24, 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 Conroe

Conroe’s own rules

  • InspectionsRequired

    Site-work and building construction inside Conroe city limits.

    • All work must be inspected before concealment.
    • Building-inspection requests must be made at least 24 hours before the scheduled inspection and before 4:00 p.m.

    advance inspection-request notice: >= 24 hours (Request must also be made before 4:00 p.m.)

    “Within the city limits, all site work construction and building construction requires inspection by City engineering and/or building inspectors.”
  • Certificate of occupancyRequired

    Structures inside Conroe city limits before occupation or use.

    • Construction must be complete and final inspections must have passed before the contractor requests a CO inspection.
    • For commercial permits, applicants must also directly contact the Fire Marshal's office to schedule the CO inspection.
    • A CO is issued if the project complies.
    “No building or structure shall be used or occupied, and no change in the existing occupancy classification of a building or structure shall be made until the Building Official has issued a Certificate of Occupancy.”
  • Local zoningAbsent

    Land inside Conroe city limits.

    • Construction and site improvements remain governed by adopted building codes, the City Code of Ordinances, and other adopted codes.
    “The City of Conroe does not regulate land use, nor do we have a formal zoning ordinance.”
  • Zoning districtsNot published

    Zoning districts inside Conroe city limits.

    • Conroe does not have a formal zoning ordinance; City ordinances, the Design Manual, and adopted building codes still govern development and construction.
    “The City of Conroe does not regulate land use, nor do we have a formal zoning ordinance.”
  • Minimum dwelling sizeNone

    Zoning-based minimum dwelling-size controls inside Conroe city limits.

    • This finding concerns land-use zoning controls only; construction remains governed by City ordinances, the Design Manual, and International Building Codes.
    “The City of Conroe does not regulate land use nor does it have a zoning ordinance.”
  • Minimum lot sizeNone

    Zoning-based minimum lot-size controls inside Conroe city limits.

    • This finding concerns land-use zoning controls only; subdivision requirements may apply to development and platting.
    “The City of Conroe does not regulate land use nor does it have a zoning ordinance.”
  • SetbacksNone

    Zoning-based setbacks inside Conroe city limits.

    • This finding concerns land-use zoning controls only; City development and building rules may still govern construction.
    “The City of Conroe does not regulate land use nor does it have a zoning ordinance.”
  • Lot coverageNone

    Zoning-based lot-coverage controls inside Conroe city limits.

    • This finding concerns land-use zoning controls only; City development and building rules may still govern construction.
    “The City of Conroe does not regulate land use, nor do we have a formal zoning ordinance.”
  • Building heightNone

    Zoning-based building-height controls inside Conroe city limits.

    • This finding concerns land-use zoning controls only; building codes and City ordinances continue to govern construction.
    “The City of Conroe does not regulate land use, nor do we have a formal zoning ordinance.”
  • Agricultural exemptionConditional

    Existing timber or agricultural exemptions for property annexed into Conroe city limits.

    • The exemption remains only while the property continues to be used for timber or agricultural purposes.
    “Yes, until you no longer use the property for timber or agricultural purposes.”
  • Subdividing landRegulated (with conditions)

    Development and subdivision of real property inside Conroe city limits.

    • A building permit will not issue until the parcel complies with applicable Chapter 94 requirements.
    • A subdivision occurs when a parcel is divided, whether or not ownership transfers.
    • A division into parts greater than five acres, each with public-street access and no proposed public improvements, is not required to be platted.

    plat-exception parcel size: > 5 acres (Each part must have public-street access and no public improvements may be proposed.)

    “Before real property within the city limits of Conroe may be developed, it must comply with the requirements of the Subdivision Ordinance, Chapter 94.”
  • Permit feesPublished (with conditions)

    Residential building permits inside Conroe city limits.

    • The source directs applicants to the Residential Building Permit Application for the list of submittal requirements and permit fees; no fee amount was stated in the opened guide.
    “A list of submittal requirements and permit fees may be found on the Residential Building Permit Application.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Conroe or Montgomery County directly.

  • Owner-builder exemption — Owner-built residential construction inside Conroe city limits.
  • Living in an RV — RV occupancy on private land inside Conroe city limits.
  • Camping on your land — Temporary camping on private land inside Conroe city limits.
  • Tiny homes — Tiny-home occupancy inside Conroe city limits.
  • Manufactured homes — Manufactured-home occupancy inside Conroe city limits.
10 more unanswered
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Driveway access
  • Building in a floodplain
  • 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.

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

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