Montgomery County requires a Development Permit for all proposed development within unincorporated areas — and "development" is defined very broadly. It includes any man-made change to improved and unimproved real estate, such as constructing buildings, grading, dredging, clearing, or filling.
That breadth is the thing to understand first. In most Texas counties a rural project triggers nothing until septic; here, moving dirt is development. The county also puts the burden squarely on the applicant: it is the customer’s responsibility to review the exemptions and regulations to determine if they are exempt, and permitting staff are not responsible for that determination.
What the county does not do is regulate the building itself in the way a city would. Residential properties do not require a permit for a roof, and residential rooftop solar does not require a permit — though if a solar installation disturbs ground through clearing, filling, or grading, that constitutes development and does.
Covers unincorporated Montgomery County. Conroe, Willis, Montgomery, Oak Ridge North, Shenandoah, Panorama Village, and Splendora permit their own territory, and The Woodlands operates as a special-purpose township rather than a general-law city. Confirm the parcel before filing.
Grading, clearing, and filling all count as development. A Development Permit is required for all proposed development in unincorporated Montgomery County, and development includes any man-made change to improved and unimproved real estate — constructing buildings, grading, dredging, clearing, or filling. It is the applicant’s responsibility to review the exemptions and regulations to determine whether an exemption applies.
What requires a county permit in Montgomery County?
The Development Permit is the central record here, and its trigger is broader than a building permit would be. Ground disturbance alone can require one even where no structure is involved.
Around it sit the familiar county records — on-site sewage, floodplain, addressing, plats, road access — plus Fire Code permitting through the Fire Marshal on commercial work, and an Elevation Certificate obligation on flood-exposed homes.
County record required
- Development Permit for all proposed development in unincorporated areas
- Development includes constructing buildings, grading, dredging, clearing, or filling
- On-site sewage facility permit where no public sewer is available
- Floodplain requirements; Elevation Certificate at completion within 100 ft of the SFHA
- 911 address for each livable structure — separate addresses required
- Fire Code permit for commercial solar installations
- Fire Code permit may apply to commercial roof replacements or modifications
- Subdivision plat when land is divided
No county permit required
- County residential building permit of the municipal kind
- Permit for a residential roof — not required by the county
- Permit for residential rooftop solar — unless ground is disturbed
- County construction inspections across the trades
Montgomery County building department: who handles permitting
Montgomery County administers Development Permits and on-site sewage through Environmental Health permitting, with Floodplain Administration handling elevation compliance and the Fire Marshal’s Office handling Fire Code permits on commercial work.
Addressing is handled by Non Emergency 9-1-1 Addressing, and the county is firm that each livable structure must have its own address — two homes on one property cannot share one.
| Detail | Information |
|---|---|
| Development Permit | Required for all proposed development in unincorporated Montgomery County |
| Definition of development | Any man-made change to improved and unimproved real estate |
| Permitting | Montgomery County Environmental Health — permitting |
| Addressing | Non Emergency 9-1-1 Addressing — one address per livable structure |
| Floodplain | Floodplain Administration — Elevation Certificate at completion where applicable |
| Fire Code | Fire Marshal’s Office — commercial solar and commercial roof work |
| Certificate of Occupancy | See Codes and Zoning |
| County seat | Conroe — the city runs its own Building Inspections on OpenGov |
Two homes on one property need two addresses. The county states plainly that each livable structure must have its own address issued by Non Emergency 9-1-1 Addressing, which matters on guest houses, casitas, and multi-generational arrangements.
Montgomery County permits: record types and what each covers
Montgomery County regulates differently from most Texas counties rather than less. A Development Permit is required for all proposed development in unincorporated areas, and development is defined as any man-made change to improved and unimproved real estate — which reaches grading, dredging, clearing, and filling as well as constructing buildings. The records below reflect that framing.
What Montgomery County actually issues
| Record | What triggers it | Who administers it | Notes |
|---|---|---|---|
| OSSF permit to construct | Installing, altering, repairing, or extending an on-site sewage facility where no public sewer is available | Montgomery County Environmental Health | Required statewide; soil evaluation by a licensed site evaluator is part of the application |
| OSSF license to operate | Issued after the permit to construct requirements are met and the system passes inspection | Montgomery County Environmental Health | Also triggered on transfer of ownership of an existing system |
| Floodplain development permit | Placing fill, setting a structure, or developing in or near a mapped special flood hazard area | County floodplain administrator | Substantial improvement and substantial damage rules attach to existing structures |
| Subdivision plat | Dividing land in the unincorporated county | Commissioners Court and county engineering | Road, drainage, and access standards apply |
| 911 address assignment | New structures and new access points needing an address | County addressing / emergency management | Usually a prerequisite for utility service |
| Right-of-way and driveway culvert | New or modified access onto a county road | County road and bridge / precinct | Culvert sizing set by drainage conditions |
| Water well registration | Drilling a water well | Lone Star Groundwater Conservation District | Groundwater districts operate independently of the county |
| Fire Code permit | Commercial solar installations, and commercial roof replacements or modifications | Fire Marshal’s Office | Consult the Fire Marshal to determine requirements for a specific project |
| Elevation Certificate | Homes in, or within 100 ft of, the Area of Special Flood Hazard | Floodplain Administration | Final certificate submitted at completion to verify elevation compliance |
| Ch. 233 commercial / multifamily | New commercial, public-accessible, or multifamily buildings, and substantial improvements, where the county has adopted the authority | Commissioners Court | Scope is set by county order; confirm adoption before assuming it applies |
County reaches this
- On-site sewage facilities, everywhere in the state
- Floodplain development and substantial improvement
- Subdivision of land and county road access
- Addressing, and fire code where separately adopted
County generally does not
- Issue residential building permits in unincorporated areas
- Conduct residential construction inspections
- Issue a residential certificate of occupancy
- Enforce a residential building code absent a county order adopting one
Solar permits in Montgomery County
In unincorporated Montgomery County there is generally no county building permit for a residential rooftop or ground-mount photovoltaic system, because the county does not regulate residential construction. That is a jurisdictional fact rather than a green light: the electrical work still has to be performed by a TDLR-licensed electrician to code, and the utility still governs interconnection.
Utility interconnection is the real gate. The interconnecting utility — the wires company in deregulated territory, or the electric cooperative serving the parcel in much of rural East Texas — runs its own application, engineering review, and Permission to Operate process, and it is not waived by the absence of a county permit.
Under Tex. Prop. Code §202.010 a property owners' association cannot prohibit a solar energy device outright, and any dedicatory provision that does is void — but the statute preserves the association's right to require prior architectural approval and to impose placement and appearance conditions. Approval cannot be unreasonably withheld.
Inside Conroe city limits the picture changes completely: the city permits solar like any other municipality. The jurisdiction question is the first question.
Roofing permits in Montgomery County
A residential roof covering replacement in unincorporated Montgomery County generally does not require a county permit, for the same reason: Texas counties have no general authority over residential construction outside city limits.
Two things still apply. If the structure sits in a mapped special flood hazard area, the county floodplain ordinance can reach the work through substantial improvement rules — and cumulative improvement value is what triggers them, so a reroof after other recent work can cross the threshold on its own. And commercial or multifamily buildings can fall under the county's Ch. 233 authority where it has been adopted.
Texas has no statewide product approval system and no central listing to check a roofing product against. Hail is the governing risk across East Texas, and impact-resistant Class 3 and Class 4 shingles carry insurance premium credits from most carriers. Under Tex. Prop. Code §202.011 a property owners' association cannot prohibit wind or hail resistant shingles, or shingles that improve energy efficiency.
Montgomery County sits north of Houston at roughly 105 to 115 mph ultimate design wind speed under the codes regional cities adopt, inland of the TDI designated catastrophe area and outside any windstorm certification requirement. The county requires no permit for a residential roof; commercial roof replacements or modifications may require a Fire Code permit.
Texas has no statewide building code and no statewide general contractor license. In the unincorporated county the practical compliance surface is the trades — TDLR for electrical and mechanical, the TSBPE for plumbing — plus the county's environmental and floodplain records, rather than a building department.
Montgomery County permit cost and fees
Montgomery County charges Development Permit and OSSF fees rather than a valuation-based building permit fee. Fire Code permits on commercial work carry their own costs through the Fire Marshal’s Office.
On a flood-exposed property, the Elevation Certificate is a surveyor cost rather than a county fee, and it is required at completion to verify elevation compliance — budget it as part of close-out rather than discovering it there.
| Fee component | How it works |
|---|---|
| Development Permit | Required for all development; county fee |
| OSSF permit | County fee plus licensed site evaluation and system design |
| Elevation Certificate | Surveyor cost; required at completion within 100 ft of the SFHA |
| 911 addressing | One address required per livable structure |
| Fire Code permit | Commercial solar and commercial roof work; Fire Marshal’s Office |
| Subdivision plat | Filing and review fees, plus survey and engineering |
Planning a build in unincorporated Montgomery County? Send us the parcel and scope and we’ll establish whether it constitutes development and map the records that follow.
Montgomery County trade permits
Montgomery County does not run a residential trade permit program. What it does regulate is development — ground disturbance and construction — plus on-site sewage, with Fire Code permitting reaching commercial work through the Fire Marshal.
Electrical
No county residential trade permit. TDLR licensure applies, and TDLR retains enforcement authority in unincorporated areas.
Plumbing
No county residential trade permit for interior plumbing. On-site sewage is permitted through Environmental Health.
Solar
Residential rooftop solar requires no county permit. Commercial solar requires a Fire Code permit. Any ground disturbance from either constitutes development.
Roofing
Residential roof replacement requires no county permit. Commercial roof replacements or modifications may require a Fire Code permit — consult the Fire Marshal.
Montgomery County permit application: how to apply step by step
Any man-made change to improved or unimproved real estate — constructing, grading, dredging, clearing, or filling — requires a Development Permit.
The county states it is the customer’s responsibility to review the exemptions and regulations to determine exemption, and that staff are not responsible for that determination.
Check against Conroe, Willis, Montgomery, Oak Ridge North, Shenandoah, and Splendora, and note The Woodlands’ separate township arrangement.
Each livable structure must have its own address issued by Non Emergency 9-1-1 Addressing.
Apply for the OSSF permit where no public sewer is available, and establish flood exposure — an Elevation Certificate is required at completion within 100 ft of the SFHA.
Commercial solar installations require a Fire Code permit, and commercial roof replacements or modifications may. Consult the Fire Marshal.
Inspections in Montgomery County
Montgomery County does not run a municipal-style construction inspection sequence in unincorporated areas. Its verification centres on the Development Permit, on-site sewage, and floodplain compliance.
Where the home is in, or within 100 feet of, the Area of Special Flood Hazard, a final Elevation Certificate must be submitted to Floodplain Administration upon final completion to verify compliance with elevation requirements. That is a close-out deliverable, not an optional record.
For a residential certificate of occupancy, the county directs enquirers to Codes and Zoning. Confirm what applies to your specific structure before assuming one is available or required.
Montgomery County permit search and official resources
- Montgomery County — permitting FAQ
- City of Conroe — permit and inspection information
- TCEQ — on-site sewage facilities for homeowners
- Texas Department of Licensing and Regulation
Frequently asked questions
Who issues building permits in Montgomery County?
No one, for general residential construction in unincorporated areas — Montgomery County has no adopted residential building code and no building inspection program. The records that do apply are administered separately: on-site sewage through Montgomery County Environmental Health, floodplain development through the county floodplain administrator, plats through Commissioners Court, and road access through the precincts. Inside Conroe city limits, the city permits normally.
How do I get a permit in Montgomery County?
Start by confirming the parcel is actually unincorporated, because that single question changes everything and a mailing address will not answer it. If it is, work the records the county does issue rather than looking for a building permit: septic first, since it constrains siting and carries the longest lead time, then floodplain, plat, addressing, and road access as the project triggers them.
What codes apply in Montgomery County?
Texas has no statewide building code, and Montgomery County has not adopted one for unincorporated areas, so no building code is enforced there. State rules still govern on-site sewage facilities, and the county’s floodplain ordinance governs development in mapped flood hazard areas. Trade work remains subject to state licensing through TDLR and the TSBPE. Inside city limits, the municipality’s adopted codes apply in full.
Do I need a permit in unincorporated Montgomery County?
Yes, a Development Permit is required for all proposed development within the unincorporated areas of Montgomery County. Development is broadly defined and includes any man-made change to improved and unimproved real estate, such as constructing buildings, grading, dredging, clearing, or filling. The county notes that it is the customer’s responsibility to review the exemptions and regulations to determine whether they are exempt — permitting staff are not responsible for that determination.
Are permits required for solar panels in Montgomery County?
It depends on occupancy and on ground disturbance. Commercial buildings require a Fire Code permit for solar panel installations. Residential buildings with solar on the roof do not require a permit. However, if the solar installation — commercial or residential — disturbs area on the ground through clearing, filling, or grading, that constitutes development and a Development Permit applies.
Can two homes on my property share one address?
No. Montgomery County states plainly that each livable structure must have its own address issued by Non Emergency 9-1-1 Addressing. That matters on guest houses, casitas, garage apartments, and multi-generational arrangements, and it typically has to be resolved before utilities will connect to the second structure. Handle addressing early rather than at the end of construction.
Do I need a permit to install solar panels in Montgomery County?
Yes. Photovoltaic installations in Montgomery County are permitted under a dedicated solar record type reviewed on both a structural and an electrical track. Solar thermal — passive water and pool heating — is a separate record. Under Tex. Prop. Code §202.010 a homeowners' association cannot ban a solar energy device outright, but it may still require prior architectural approval and impose reasonable placement conditions, so run the HOA submittal alongside the permit. Since September 1, 2025, Tex. Local Gov't Code §247.0025 (SB 1202) also permits third-party plan review and inspection of home backup power installations — generators and energy storage for one- and two-family dwellings at 600 volts or less — in place of jurisdiction review. Utility interconnection and Permission to Operate still run in parallel.
Does a roof replacement require a permit in Montgomery County?
Yes, in most cases. A roof covering replacement requires a permit in most Texas municipalities including Montgomery County, though minor repairs can fall below the local threshold. Texas has no statewide product approval system and no central product listing, so compliance runs against the locally adopted code edition and its local amendments. Hail rather than wind is the governing risk inland, and Tex. Prop. Code §202.011 bars an HOA from prohibiting wind or hail resistant shingles.
What is the difference between a residential and a commercial permit in Montgomery County?
In a Texas county it is the difference between no county jurisdiction and possible county jurisdiction. Residential construction in unincorporated Montgomery County is largely outside county authority. New commercial, public-accessible, and multifamily buildings, plus substantial improvements, are the categories Local Government Code ch. 233 lets a county reach — but only where Commissioners Court has adopted that authority, so confirm it rather than assuming.
Do trade permits need to be pulled separately in Montgomery County?
Not in unincorporated Montgomery County — there is no county trade permit program and no county trade inspection. Electrical, plumbing, and mechanical work should still be performed by contractors licensed through TDLR and the TSBPE, and the septic connection is permitted and inspected separately. Inside city limits, trade permits work normally.
What happens if I file under the wrong permit type in Montgomery County?
Because Montgomery County does not run a building permit program, the more common failure is filing nothing at all — assuming that no building permit means no requirements, and missing the septic, floodplain, plat, or addressing record the project actually triggered. Those are enforced, and unwinding them after construction is materially harder than filing them in order.
Can I apply for all Montgomery County permit types online?
Partly. Montgomery County publishes its permitting information and FAQs online through Environmental Health, and administers Development Permits, OSSF, floodplain, addressing, and Fire Code permitting through separate county functions rather than a single unified portal. The City of Conroe, by contrast, moved fully to OpenGov in December 2025. Confirm which applies before assembling a package.
Simplify Montgomery County permitting with Alliance Permitting
A Development Permit that reaches grading and clearing, an exemption determination the county puts on the applicant, split solar and roofing rules by occupancy, and an Elevation Certificate due at completion — Montgomery County regulates differently rather than less. Alliance Permitting is a permit expediter for Montgomery County: we establish whether a project constitutes development and run the records that follow.
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Contractors and builders choose Alliance for Montgomery County because we deliver:
- Local expertise — we know how broadly Montgomery County defines development and which records attach to which occupancy.
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Alliance Permitting is a permit documentation and submission company: we prepare your paperwork, file it correctly, and coordinate with the authority having jurisdiction through issuance. We are not a contractor and do not perform licensed plan review or inspections; that work stays with your team and the jurisdiction.
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This guide is provided by Alliance Permitting for general informational purposes and reflects publicly available information believed accurate as of July 2026. Permit requirements, fees, and processes change; always confirm current details with Montgomery County Environmental Health Permitting before filing. This is not legal advice.