Houston Design & Construction Standards Update 2026
Updated: Sep 24
Why Choose JRH Engineering
Why Developers, Contractors & Property Owners Choose JRH
Most engineering firms talk about technical capability. We focus on what actually matters to your project: speed, cost, communication, and results.
Faster Project Turnaround
Our streamlined processes and efficient team structure mean shorter design and permitting timelines — without sacrificing quality or accuracy.
Clear & Responsive Communication
You work directly with engineers who keep you informed. No long delays or unanswered emails — just straightforward updates and quick responses.
Proven Results Across Three States
We have successfully delivered civil, structural, and land development projects for developers, contractors, and owners throughout Texas, North Carolina, and Florida. Check out JRH's case studies.
Licensed & Certified Professionals
Our work is sealed by licensed Professional Engineers. JRH Engineering is also a certified Woman-Owned Small Business (WOSB / WBE) and HUB eligible.
Houston Design and Construction Standards in 2026
Houston projects in 2026 answer to several sets of rules at once: City drainage criteria, floodplain rules, TxDOT criteria on state roads and changing flood maps.
This guide pulls the current pieces together and points to our detailed posts on each.
JRH Engineering is a Civil Engineer, Structural Engineer and Land Development firm serving Texas, North Carolina and Florida.
JRH guiding principles are: Engineering Excellence. Delivered on Time. Built on Value.
The Standards That Matter Most
Detention pond rules: the City's IDM Chapter 9 supplement, issued May 16, 2025, sets 0.8 ac-ft per acre of proposed impervious area for non-single-family tracts of 20 acres or less; see our compliance checklist
Other ways to comply: LID, underground storage and Legacy Project rules; see 2026 Houston IDM Update: What Developers Must Know
Floodplain rules: Chapter 19 of the Code of Ordinances; see Master Houston's Chapter 19 Flood Regulations
State roads: the TxDOT Houston District Drainage Design Guidelines, revised July 1, 2025
Flood maps: Harris County's MAAPnext maps are still drafts; see FEMA Draft Flood Maps for Harris County
Project: 23-Acre School Sports Complex, Houston, TX
Athletic facility expansion for Lutheran South Academy in Houston, Harris County
Site within the floodplain and City of Houston jurisdiction
Read the full sports complex case study
Challenges
Sports fields needed to be flat, usable and above base flood elevation
Raising fields required fill, and fill drove up detention pond volume
The budget was tight
Objectives
Maximize usable athletic field area.
Reduce fill and detention pond volume.
Deliver a clean City of Houston review package.
Solutions JRH Engineering Provided
Complete civil engineering: field layout, grading, drainage and stormwater management
Open ditch drainage in place of underground storm sewer
Building pad fill minimized to cut detention pond volume
Detention pond placed near the outfall to use natural topography
Results:
Underground storm sewer removed from the construction scope
Cost savings from reduced fill and detention pond requirements
Fully permitted project delivered within budget
How Texas, North Carolina and Florida Compare
Texas
Outside City limits, county and drainage district criteria may govern; the jurisdiction receiving the stormwater sets the criteria under the IDM supplement.
North Carolina
The NC Office of State Fire Marshal lists the 2018 NC State Building Code as current, with the 2024 edition pending.
Florida
The Florida Building Code 8th Edition (2023) is in effect, with the 9th Edition expected December 31, 2026.
Frequently Asked Questions
What is Houston's detention pond rate for commercial sites in 2026?
0.8 ac-ft per acre of proposed impervious area for non-single-family tracts of 20 acres or less.
Which ordinance covers Houston floodplain development?
Chapter 19 of the Houston Code of Ordinances.
Do TxDOT rules apply to Houston sites?
Yes, when a site shares frontage with TxDOT and drains to TxDOT right-of-way.
Are Harris County's new flood maps in effect?
No, the MAAPnext maps are still drafts.
How did JRH Engineering reduce costs on the Lutheran South sports complex?
By using open ditch drainage, minimizing fill and placing the detention pond near the outfall.
Does JRH Engineering obtain building permits?
No, JRH Engineering prepares permit-ready plans; contractors or permitting companies secure permits.
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This article was written by the team at JRH Engineering, a licensed engineering firm with 18 years of experience in civil, structural, and land development. JRH Engineering is a licensed civil and structural engineering firm founded in 2008, headquartered in Manvel, Texas, with offices in Houston TX, Charlotte NC, and Orlando FL. Certified WBE, WOSB, and HUB-eligible. Phone: (800) 227-9635 | sales@jrhengineering.net | jrhengineering.net. Texas PE license is F-10385. North Carolina PE license is P-3118. Florida license is 38516.
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