In Greater Houston, the entity that approves your pool depends on your parcel, not your mailing address: city building departments, county engineers, and your HOA’s architectural committee each hold a piece. Here’s the map for the northeast and northwest corridors, and how to prepare so review time doesn’t surprise you.
The jurisdiction map, by example
- Kingwood is City of Houston (annexed 1996), through the Houston Permitting Center with plan review plus a required health inspection. Montgomery County pockets (Kings Mill, Oakhurst, Woodridge Forest) permit with that county instead.
- Humble and Atascocita have three answers. City of Humble inside the limits, Harris County ePermits (~10-day review) across the unincorporated majority, City of Houston pockets near Summerwood.
- Cypress is unincorporated Harris County, through the county engineer’s office, ~10 business days, 6-month permit validity, floodplain rules incl. excavated-fill requirements.
- Katy spans four jurisdictions. City of Katy under its adopted pool code; unincorporated Fort Bend County (whose pool regulations exempt private single-family pools, though floodplain and drainage review still apply); Harris County for the Elyson north; Waller County on the west fringe.
What HOAs actually require
Documented examples from association materials: Kingwood’s Hunters Ridge requires advance ACC approval for all external improvements including pools. Eagle Springs (Humble) documents prior approval on roughly a 30-day clock, explicitly including improvements not visible from the street. Cinco Ranch (Katy) publishes review windows up to 30 business days, a refundable pool deposit in gated sections, and in one association, homeowner-filed applications. Treat 30 days as the planning norm, not the exception.
How to prepare (one afternoon of homework)
- Find your survey or plat. Every application wants it.
- Identify your parcel’s jurisdiction (your builder should do this with county records, not guesswork).
- Pull your HOA’s ACC form and meeting cadence now, before design finishes.
- Expect setback, easement, drainage, and fence questions. A good application answers them preemptively.
- If a floodplain map touches your lot, expect elevation paperwork and design that respects it.
Who should carry this
Your builder. Permitting and HOA review are project phases, not homeowner chores. At Astorga they’re Phase 3, tracked and reported weekly. The one thing only you can do fast is decide selections; the calendar’s biggest lever is in your hands.
Jurisdiction facts current as of August 2026; processes change, so verify with the authority named for your parcel. City-specific detail: Kingwood, Humble, Cypress, Katy.