Room Addition Permit Requirements in Humble, TX
CORRECTION: AHJ changed from Harris County to the City of Humble. Inside Humble city limits the City of Humble Building & Inspection Department (114 W. Higgins St, Chief Building Official Ray Pearson, 281-446-6228) is the correct AHJ; Harris County's Office of the County Engineer Permits Division regulates only unincorporated areas. Texas has no statewide residential code; Humble adopted the 2018 IRC (Code of Ordinances Ch. 4, Art. 4.02) plus 2018 IBC/IPC/IMC/IFC, 2017 NEC, and 2018 Energy Code. Permits filed via the iWorq portal, though most plan-review permits must be submitted in person. Residential fees from the official Oct 1, 2024 fee schedule: Building Permit $50.00 + $0.32/sq ft of roof-covered floor space; Fence $50.00 + $1.00/25 LF; Electrical $50-$150; Plumbing $50-$100.
By Joey, Founder · Last verified May 31, 2026 · How we research →
When you need a Addition permit
Inside the City of Humble (not Harris County), any habitable-space addition requires a building permit from the City of Humble Building & Inspection Department (114 W. Higgins St, 281-446-6228) under the 2018 IRC adopted in Code of Ordinances Ch. 4, Art. 4.02. The Residential Building Permit fee is $50.00 plus $0.32 per square foot of roof-covered floor space per the Oct 1, 2024 fee schedule, with separate electrical and plumbing permits as applicable. Plan-review permits generally cannot be filed online through the iWorq portal, so submit at the Building Department.
Room Addition Permit Costs: Humble vs. Nearby
Humble comes in on the low side for Texas. You're looking at From $50 here, compared to the state average of $414 – $2,000.
| City | Estimated Fee |
|---|---|
| Humble | From $50 |
| Houston | $150 – $3,000 |
| San Antonio | $130 – $2,550 |
| Dallas | $150 – $3,000 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all Humble permit costs →
Zoning & HOA Considerations
Room additions typically require zoning review for setbacks, height limits, and lot coverage. Your addition must comply with your zoning district's building envelope requirements.
If you live in an HOA community: room additions almost always require HOA architectural review approval. HOAs may restrict the size, style, materials, and exterior appearance of additions to maintain neighborhood consistency.
Estimated Project Timeline
Here's a typical timeline for a room addition project:
Timeline is based on the typical about 4 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
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Frequently Asked Questions
Estimated permit fees for Room Addition projects range from From $50. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Room Addition projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Room Addition permits is about 4 weeks. More complex projects may take longer if plan review is required.
If you live in an HOA community, you may need architectural review approval in addition to a building permit. HOA rules and city building codes are separate, you may need to satisfy both. Review your CC&Rs and submit to your HOA's architectural review committee before starting work.
Learn More About Room Addition Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Room Addition Guide →