A Harris County permit covers unincorporated areas of the most populous county in Texas, and is issued by the Harris County Office of the County Engineer, Permits Division. The county reviews commercial and multi-family buildings under its adopted codes and fire code, and issues a residential development permit for new homes and manufactured homes. We file and track it for you.
The residential permit is narrower than a city building permit. It is a flat-fee residential development permit ($165, or $238 inside a mapped floodplain) that covers the home, its septic system and driveway, and the county inspects the structure only when it sits in the 500-year or 100-year floodplain, a floodway or a coastal high hazard area. Applications run through the e-Permits portal.
Two approvals run alongside the building permit and are easy to miss. Commercial architectural plans must also clear the Harris County Fire Code office, and projects over $50,000 require a TDLR project number and accessibility review that sits entirely outside county permitting.
Covers unincorporated Harris County only. If the property is within the City of Houston or another incorporated city — Pasadena, Baytown, La Porte, Deer Park, Humble, Katy, Tomball, or any of the others — you must apply through that city’s permitting department instead.
Harris County permits apply only to unincorporated areas. If your property is within the City of Houston or another incorporated city, you must apply through that city’s permitting department. Harris County does not require a general contractor licence for unincorporated areas. Projects over $50,000 require a TDLR project number and accessibility review.
What requires a county permit in Harris County?
In unincorporated Harris County, building permits reach both commercial and residential construction — a broader authority than almost any other Texas county exercises.
Exemptions are narrow and scope-specific. When unsure, confirm with the Permits Office before starting, and note that exemption from a building permit does not exempt a project from other requirements.
Permit required
- New commercial and multi-family construction
- Residential construction — new homes and manufactured homes, through a residential development permit
- Additions, alterations, and structural modifications
- Site work including grading, utilities, landscaping, and drainage
- Fire detection and suppression systems
- Tenant improvements
- Change of occupancy
- Demolition
Typically exempt
- Painting, flooring, and cosmetic work in residential
- Minor residential repairs not affecting structure
- Retaining walls 4 feet or under
- Agricultural buildings in certain cases
Harris County building department: who handles permitting
The Permits Division of the Office of the County Engineer handles plan review, permit issuance, and inspections for unincorporated areas, including on-site sewage facilities. Applications are submitted through the e-Permits Portal at permits.harriscountytx.gov or in person at 1111 Fannin St., and the Permits Office can be reached at (713) 274-3900.
Short on time to read all of this?
Get a free quote →Commercial permitting runs nine primary functions including fire detection and suppression. Architectural plans for commercial work also need Harris County Fire Code approval — a separate review from the building permit, and one that regularly determines the critical path.
| Detail | Information |
|---|---|
| Authority | Harris County Office of the County Engineer, Permits Division |
| Office | 1111 Fannin St., 1st Floor Lobby, Houston, TX 77002 · Monday to Friday 7:30am to 4:30pm |
| Phone | (713) 274-3900 — Permits Office |
| Online portal | e-Permits Portal — permits.harriscountytx.gov |
| Covers | Unincorporated Harris County only |
| Code cycle | 2021 IBC/IRC with Harris County amendments |
| Fire code | Commercial architectural plans need Harris County Fire Code approval |
| Contractor licensing | No general contractor licence required for unincorporated areas |
The $50,000 threshold catches commercial work regularly. Projects over that valuation require a TDLR project number and accessibility review under the Texas Accessibility Standards, which runs on its own timeline outside county permitting — start it in parallel rather than after the building permit.
In 2025, building permits issued in unincorporated Harris County authorized 17,807 new privately owned housing units, 11,014 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Harris County permits: record types and what each covers
Harris County breaks the usual Texas county pattern. It permits commercial and multi-family work with plan review, fire code review and inspections, and issues a residential development permit for every new home, with a county inspection when the home is in a floodplain. The records below reflect that broader reach.
Not sure this scope needs a permit?
Get a free quote →What Harris 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 | Harris County Office of the County Engineer, Permits Division | Required statewide; a site evaluation by a licensed site evaluator or engineer is part of the application |
| OSSF license to operate | Issued after the permit to construct requirements are met and the system passes inspection | Harris County Office of the County Engineer, Permits Division | On a sale, the new owner should tell the permitting authority; TCEQ does not require an inspection |
| 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 | the Harris-Galveston Subsidence District | Groundwater districts operate independently of the county |
| Fire code review | Commercial and multi-family architectural plans | Harris County Fire Code office | A separate approval from the building permit; commercial plans must clear both |
| TDLR accessibility review | Projects over the statutory valuation threshold | Texas Department of Licensing and Regulation | Requires a TDLR project number; runs outside county permitting |
| Ch. 233 commercial / multifamily | New commercial buildings, public buildings and apartment buildings of four or more units, and substantial improvements, where the county has adopted a fire code | 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 Harris County
Inside Houston city limits the picture changes completely: the city permits solar like any other municipality. The jurisdiction question is the first question.
Roofing permits in Harris County
Harris County spans the Houston region, and reroof work here is shaped by rainfall and hail rather than certified wind resistance — unincorporated Harris County sits outside the TDI designated catastrophe area. Note the exception: five Harris County cities east of State Highway 146 — La Porte, Morgan’s Point, Pasadena, Seabrook, and Shoreacres — are inside the designated area, so WPI-8 certification applies there and not in the unincorporated county.
Rather talk it over?
Call 1-855-478-4290 →Texas has no single statewide building code and no general contractor licence: state law sets base codes and each city adopts its own edition and amendments, while most counties issue no building permits for homes outside city limits. The statewide solar, HOA and roofing rules are on the Texas page. Texas rules
Harris County permit cost and fees
Harris County’s residential development permit is a flat $165 for a single-family or multi-family dwelling or manufactured home, plus a $73 inspection fee inside a mapped floodplain. Commercial fire code permit fees are set by project valuation bands, under the fee schedule effective October 1, 2025.
A Certificate of Occupancy must be obtained before a commercial building or lease space may be occupied. Budget the fire code review and any TDLR accessibility registration as separate lines.
| Fee component | How it works |
|---|---|
| Residential building permit | $165 flat; $238 with the floodplain inspection |
| Commercial building permit | Valuation-based |
| Plan review | Included in the permit structure |
| Fire code review | Separate fee for commercial |
| Trade permits | Separate fees as applicable |
| Work without a permit | Penalties and enforcement |
Want a precise number for a specific Harris County project? Send us the scope and valuation and we’ll return a fee estimate alongside a filing timeline.
Harris County trade permits
Trade permits may be required for commercial and multi-family projects, and state trade licences apply throughout. Texas licenses electricians and mechanical contractors through TDLR and plumbers through the TSBPE, and does not issue a statewide general contractor licence.
Electrical
Required for commercial electrical work — a TDLR-licensed electrician is required.
Plumbing
Required for commercial plumbing — a TSBPE-licensed plumber is required.
Mechanical / HVAC
Required for commercial HVAC — a TDLR-licensed mechanical contractor is required.
Fire and specialty
Commercial permitting runs nine primary functions including fire detection and suppression. Minor site development and tenant improvements carry different requirements.
Rather not deal with the Harris County building department?
Get a free quote →Harris County permit application: how to apply step by step
Verify the parcel is NOT within any incorporated city limits. If it is inside Houston, Pasadena, Baytown, or another city, apply through that city instead.
Create an e-Permits account at permits.harriscountytx.gov or visit in person, then submit the building permit application.
Upload construction documents. Commercial architectural plans must also receive Harris County Fire Code approval.
Projects over $50,000 need a TDLR project number and accessibility review — run it in parallel, not after.
Staff reviews against the adopted 2021 codes with Harris County amendments. Address comments and resubmit.
Pay all fees, schedule inspections through the Permits Office, and obtain the Certificate of Occupancy before commercial occupancy.
Inspections in Harris County
Inspections are scheduled through the Harris County Permits Office. Commercial permitting includes fire detection and suppression, accessibility, and structural inspections.
A Certificate of Occupancy must be obtained before a commercial building or lease space may be occupied. Address correction notices before requesting a re-inspection.
Because every new home needs a county residential development permit, unincorporated Harris County construction generates a county permit record, which matters for lenders, insurers, and future buyers. Outside the floodplain the county does not inspect the house itself, so private inspection reports remain worth keeping.
Harris County permit search and official resources
- Harris County e-Permits Portal
- Harris County Engineering — Permitting
- Houston Permitting Center — for work inside the city
- Texas Department of Licensing and Regulation
- Texas State Board of Plumbing Examiners
Frequently asked questions
Who issues building permits in Harris County?
The Harris County Office of the County Engineer, Permits Division, 1111 Fannin St., Houston ((713) 274-3900). It issues a residential development permit for every new home or manufactured home in unincorporated Harris County, covering septic and driveway, with a county inspection when the home is in a floodplain, and it permits and inspects commercial and multi-family work. Inside Houston city limits, the city permits normally.
Want this handled start to finish?
Get a free quote →How do I get a permit in Harris 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 county’s own records: check first whether the county permit described above applies, then septic, 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 Harris County?
Texas has no statewide building code, and Harris 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.
Does Harris County require residential building permits?
Yes, a residential development permit. Harris County requires one for new single-family and multi-family dwellings and manufactured homes in unincorporated areas, at a flat $165, and adds a county inspection when the structure is in the 500-year or 100-year floodplain, a floodway or a coastal high hazard area. It is not a municipal-style building permit with trade inspections. Commercial and multi-family buildings get full plan review and fire code review.
Do I need a contractor licence in unincorporated Harris County?
Not a general contractor licence — Harris County does not require one for unincorporated areas, and Texas issues no statewide general contractor licence either. Trade work is different: Texas licenses electricians and mechanical contractors through TDLR and plumbers through the TSBPE, and those licences apply. The property owner remains responsible for ensuring a permit is obtained.
What happens on projects over $50,000 in Harris County?
They pick up a second regulator. Projects over $50,000 require a TDLR project number and accessibility review under the Texas Accessibility Standards — a registration that runs entirely outside Harris County permitting, on its own timeline. Commercial architectural plans separately need Harris County Fire Code approval alongside the building permit. Both are easy to discover late, and both can hold a project that has otherwise cleared building review.
Do I need a permit to install solar panels in Harris County?
Ask the county first. Harris County issues its own permits in unincorporated areas (see who handles permitting above), so confirm whether a solar job needs one. The electrical work must be done by a TDLR-licensed electrician, and the utility runs its own interconnection review and Permission to Operate. Inside a city, the city’s solar permit applies. Under Tex. Prop. Code §202.010, a homeowners' association cannot ban a solar energy device outright, but it may require prior architectural approval and impose reasonable placement conditions.
Inspections are where schedules slip.
Get a free quote →Does a roof replacement require a permit in Harris County?
Ask the county first. Harris County issues its own permits in unincorporated areas (see who handles permitting above), so confirm whether a reroof needs one; the county floodplain rules can also reach the work through substantial improvement. Inside a city, the city’s roofing permit rules apply. 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 Harris County?
In a Texas county it is the difference between no county jurisdiction and possible county jurisdiction. Residential construction in unincorporated Harris 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 Harris County?
Not in unincorporated Harris 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 Harris County?
Because Harris 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 Harris County permit types online?
Yes. Applications are submitted through the e-Permits Portal at permits.harriscountytx.gov or in person at the Permits Office, 1111 Fannin St., 1st Floor Lobby, Monday to Friday 7:30am to 4:30pm, (713) 274-3900. Note that commercial architectural plans also require Harris County Fire Code approval, which is a separate review from the building permit.
Simplify Harris County permitting with Alliance Permitting
A Texas county that genuinely permits residential construction, a separate fire code review on commercial plans, a $50,000 TDLR threshold running on its own clock, and a hard incorporated-versus-unincorporated line — Harris County rewards applicants who verify jurisdiction and prepare complete packages. Alliance Permitting is a permit expediter for Harris County: we confirm the boundary and run every track together.
Trusted by leading builders and brands — including Dream Finders Homes, Tesla, Verizon, Hyatt, and Sunnova.
Contractors and builders choose Alliance for Harris County because we deliver:
- Local expertise — we know the Office of the County Engineer, the e-Permits portal, and the unincorporated-area permitting requirements.
- Complete oversight — track every permit and inspection across all your jobs in one place.
- Complete submissions — AI pre-checks plus expert review catch issues before they become correction cycles.
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.
Ready to break ground in Harris County sooner?
Let Alliance prepare, file, and track your Harris County permits while you stay focused on building. Get a free, no-obligation quote today.
More Texas permitting guides
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 Harris County Office of the County Engineer, Permits Division before filing. This is not legal advice.