How is development regulated in Houston?

Last verified August 13, 2026 against Houston Code of Ordinances §42-2 · LotCodex
Houston controls land development through Chapter 42 of its Code of Ordinances. A subdivision plat is required before any land in the city or its extraterritorial jurisdiction (ETJ) is divided into lots, and a development plat is required before most new construction or building enlargement. Chapter 42 also sets building lines and minimum lot sizes, citywide and in the ETJ. Chapter 26 separately sets off-street parking standards for buildings and tracts within the city.
Applies to: All development and subdivision of land within the City of Houston and its extraterritorial jurisdiction (ETJ), as governed by Chapter 42 (subdivision and development platting, which reaches both the city and the ETJ per Sec. 42-2) and Chapter 26, Article VIII (off-street parking, which by its own purpose clause, Sec. 26-471(a), applies to buildings or tracts within the city — NOT the ETJ). This page describes the regulatory mechanism only — plat and permit approval, building lines, lot size, and parking — drawn from those two chapters. It does not describe or imply any use-control system (what TYPE of building or use is permitted where); nothing in Ch. 42 or Ch. 26 classifies land by permitted use. It also does not address, and can't source, any separate zoning ordinance or land-use classification system, because the archived chapters this hub is built from never use the word "zoning."
What the code says
This chapter shall apply to all development and subdivision of land within the city and its extraterritorial jurisdiction. This chapter establishes the general rules and regulations governing plats, subdivisions and development of land within the city and its extraterritorial jurisdiction to promote the health, safety, morals and general welfare of the city and the safe, orderly and healthful development of the city.
Houston Code of Ordinances — Scope — §42-2 · Read the full code

Common questions

Does this page say whether Houston has zoning?
No — deliberately. The archived Houston chapters this hub is built from (Chapter 42, subdivision/development platting, and Chapter 26 Art. VIII, off-street parking) never use the word "zoning," so nothing on this page can honestly assert whether Houston does or does not have a separate zoning ordinance elsewhere in its Code of Ordinances. What this page can and does say, sourced directly to those two chapters: Houston regulates development through subdivision and development plat approval, building lines, minimum lot sizes, and off-street parking requirements.
What triggers a subdivision plat versus a development plat?
A subdivision plat is required before land is divided into lots (Sec. 42-20(a)). A development plat is required before new construction or the enlargement of any exterior dimension of a building, structure or improvement — even on land that isn't being subdivided — unless the work falls under one of the exemptions listed in Sec. 42-22. The exemption most homeowners run into: building or enlarging a detached single-family home on a lot that is already part of a recorded subdivision plat needs no separate development plat — BUT ONLY IF the work meets Article III of Chapter 42, the building-line, lot-size, and related rules this hub covers. An addition that would breach a building line, for example, is not covered by this exemption.

Related

Building Lines
Houston's "building line" — the minimum distance from a street-adjacent property line within which nothing needing a building permit may be built — applies citywide and in the extraterritorial jurisdiction (ETJ), except the central business district, which has none.
Parking Requirements
For a single-family home, Houston generally requires 2 off-street parking spaces per dwelling unit.
Shared Driveway Lots
A shared driveway lot is a single-family lot that takes vehicular access from a private roadway — not an extension of any street — serving two or more lots through cross-access easements, rather than fronting a public street directly.
Subdividing a Lot
Yes, but any subdivision of property in Houston or its ETJ requires an approved subdivision plat first — the city recognizes no other subdivisions.
Building Line vs. Setback
A building line is the line Houston's Code of Ordinances shows on a subdivision or development plat marking the minimum distance from a street-adjacent property line within which nothing requiring a building permit may be built.
Reserves
A reserve is a parcel within a Houston subdivision plat that isn't a lot.
Minimum Lot Size
In Houston, the minimum lot size for a new single-family subdivision plat is 3,500 square feet within the city limits, or 5,000 square feet in the extraterritorial jurisdiction.

This is how the code reads; confirm with the city — or ask a builder who's actually pulled this permit in Houston. The authoritative text is the Houston Code of Ordinances; permitting questions go to Houston Permitting Center.