MEP permit drawings in Houston, TX.

The City of Houston adopts the International Codes as the Houston Construction Code, with local amendments, and reviews MEP drawings at the Houston Permitting Center. Electrical work follows the NEC as adopted by the city, and Houston has its own floodplain rules that affect where equipment can go.

• Building & residential — Houston amendments to the IBC and IRC
• Electrical — NEC as adopted in the Houston Electrical Code
• Plumbing & mechanical — Houston's adopted plumbing and mechanical codes
• Energy — IECC as adopted by the city
• Floodplain — Chapter 19 floodplain rules for equipment elevation

• City of Houston — Houston Permitting Center, Public Works
• Harris County (unincorporated) — Harris County Engineering Department
• Pasadena, Pearland & Sugar Land — each city's building department
• The Woodlands, Katy & Spring — county or local permit offices, depending on address
• Baytown, League City & Missouri City — plus every Greater Houston jurisdiction

Many Houston-area addresses sit outside city limits, where Harris, Fort Bend or Montgomery County rules apply instead. We confirm your exact jurisdiction from the address.

• Flood elevation — HVAC condensers, water heaters and electrical panels shown above the required flood elevation where the lot is in a floodplain.
• Hot-humid HVAC sizing — Manual J/S/D for climate zone 2A, with dehumidification considered.
• Electrical load calculations — service sizing for EV chargers, pools and heat pumps.
• Restaurant build-outs — kitchen hoods, grease interceptors and gas piping coordinated across sheets.
• Energy code notes — duct leakage, equipment efficiency and lighting documentation.

• Electrical — power and lighting plans, panel schedules, load calculations and single-line/riser diagrams (Houston Electrical Code (NEC))
• Plumbing — fixture layouts, water supply sizing, DWV isometrics and gas piping (as adopted by Houston)
• HVAC / mechanical — duct layouts, equipment schedules, ventilation and Manual J/S/D load calculations (as adopted by Houston)
• Energy compliance — IECC compliance notes and Manual J/S/D calculations
• Fire protection — sprinkler layouts, hydraulic calculations and fire alarm plans (NFPA 13/13R/13D, NFPA 72) where your project needs them

Trade-specific details: electrical, plumbing, HVAC and fire protection permit drawings.

Commercial MEP drawings in Houston generally need a Texas-licensed PE seal. Many single-family remodels and additions can be permitted without one. The Houston Permitting Center's rules for your project type decide.

Engineers who seal drawings in Texas are licensed by the Texas Board of Professional Engineers and Land Surveyors (TBPELS). If your project needs sealed MEP drawings, we confirm during scoping whether a Texas-licensed engineer can seal your discipline and scope, and we put that in writing in your quote. If we can't arrange the seal for your project, we tell you up front, so you can have your own engineer of record review and seal the set. You never pay for drawings you can't submit.

1. Send your plans — upload architectural floor plans (PDF or DWG) on our quote page, by WhatsApp or by email.
2. Quick Zoom call (optional) — we confirm scope and the Houston submittal checklist.
3. Fixed quote — price and delivery date in writing within one business day.
4. Drafting with updates — residential sets usually take 5–7 business days, light commercial 7–14, with progress updates on WhatsApp or email.
5. Submittal & plan-review comments — PDF and DWG files ready to upload; we revise for city comments at no extra charge until approval.