Mandatory City of Houston Inspections
Every permitted custom home in Houston requires the following city inspections in sequence. The builder schedules each; the city inspector must approve before the next phase begins.
- Foundation inspection: after rebar, post-tension cables, and plumbing rough-in under slab are placed but before concrete is poured. Inspector verifies rebar spacing, PT cable placement, and plumbing layout.
- Framing inspection: after all framing, sheathing, and rough-in penetrations are complete but before insulation or drywall. Inspector checks structural members, connections, and fire-blocking.
- MEP rough-in inspection: plumbing, electrical, and HVAC rough-in inspected simultaneously with or immediately after framing. Inspector verifies rough-in is complete and code-compliant before cover.
- Insulation inspection: after insulation is installed but before drywall. Verifies insulation type, depth, and continuity for energy compliance.
- Final inspection: when construction is complete. Inspector walks the finished home for life-safety compliance — smoke/CO detectors, GFCI/AFCI breakers, stair guardrails, egress windows, garage fire separation, and weatherproofing.
Optional Owner Inspections
Beyond mandatory city inspections, owners can hire a private inspector at critical milestones. The most valuable stage for an owner-hired inspection is pre-drywall — the window between MEP rough-in and insulation when all systems are visible and accessible.
A pre-drywall inspection by a licensed Texas inspector covers framing quality and connections, plumbing rough-in for correct sizing and support, electrical panel location and rough-in quality, HVAC duct routing and insulation, window flashing and weather barrier installation, and any deviations from the approved plans.
A second owner inspection at substantial completion — before the final punch list walk with the builder — catches finish defects, incomplete items, and any functional issues with appliances, HVAC, and plumbing fixtures while the builder's crew is still mobilized and motivated.
Harris County and Suburban Inspection Differences
Homes built in unincorporated Harris County or in suburban jurisdictions (Fort Bend, Montgomery, Galveston counties) follow similar inspection sequences but are administered by the county or municipality rather than the City of Houston. Inspection turnaround times vary: City of Houston typically runs 2–4 business days per inspection request; suburban counties are often faster at 1–2 business days.
Master-planned communities add a final third-party inspection from the developer or their designated inspector before occupancy is authorized. This inspection focuses on ARC compliance — that the built structure matches the approved architectural plans — rather than building code.
What Fails Inspections
The most common Houston custom home inspection failures: missing fire-blocking at top plates and floor penetrations; GFCI protection absent in bathrooms, kitchen, garage, or exterior locations; missing exterior weather barrier at window and door rough openings; improper attic insulation baffles at eaves; and improperly supported plumbing.
Each failure requires a re-inspection, which adds 2–5 business days and delays the next phase. Experienced builders avoid re-inspections through pre-inspection walkthroughs with the superintendent before calling for city inspection.
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Frequently Asked Questions
How long do Houston building inspections take to schedule?
City of Houston building inspections typically schedule 2–4 business days after request. Harris County and most suburban municipalities run 1–2 business days. Inspection turnaround is rarely a critical path item on a well-run project because the next phase of work can be prepped during the wait. It becomes a problem only if the builder calls for inspection before the work is actually ready.
Can I be present for city inspections of my custom home?
Yes, though it is not required. City inspectors schedule inspections in time windows (morning or afternoon) rather than specific times, so being present requires flexibility. Most owners find the pre-drywall owner-hired inspection more valuable than attending city inspections, because a private inspector has more time and can walk you through findings in detail.
What is a Certificate of Occupancy (CO) and when is it issued?
A Certificate of Occupancy is issued by the City of Houston or the relevant jurisdiction after the final inspection passes. The CO legally authorizes occupancy of the building. In Houston, the CO is typically issued within 2–5 business days of a passed final inspection. Most lenders require the CO before releasing the final construction loan draw and converting to a permanent mortgage.
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