Houston does not let a subdividing property choose freely where its driveway goes. Sec. 42-188 sets an order of preference and, in most city situations, the answer is decided before you reach the street.
An alley, if there is a maintained one. Sec. 42-188(e) requires a property abutting an alley maintained by the city or a homeowners association to take vehicular access from that alley. The escape is a director’s determination that the alley is undevelopable or inaccessible — which the subsection expressly extends to blockage or partial blockage of the alley by obstructions not allowing vehicular use. The qualifier is the test: an obstruction you can still drive past is not the escape.
Then the side street, on a corner. Sec. 42-188(f) sends a corner property to a maintained alley first, then to the side street — unless the side street is a major thoroughfare, in which case access comes through a flag staff, shared driveway, courtyard access drive or permanent access easement. A sole corner lot takes access from the side street.
Then Sec. 42-188(g), and what it allows depends on width. Only a mid-block property with no usable alley reaches Sec. 42-188(g). Read it for what it actually does: for a lot 44 feet or wider, (g)(1) imposes frontage conditions — 20 feet of unobstructed curb space, a third of the street-facing facade occupiable — without stating where vehicular access must come from. It is (g)(2), covering proposals of one or more narrow lots, that speaks to access directly.
Most of this section stops at the city limits. Sec. 42-188 opens by stating that subsections (b)(2) and (d) through (h) apply only in the city boundary. That covers the alley mandate, the corner rules, the mid-block width standards, the courtyard provisions and the transit-street restrictions — none of which reach the extraterritorial jurisdiction. In the ETJ, Sec. 42-188(a), (b)(1), (b)(3) and (c) are what remain.
Sec. 42-188(g) splits mid-block properties without usable alley access into two regimes at 44 feet, and adds a third band below that.
44 feet or wider. At least 20 feet of frontage must be left as unobstructed curb space, and at least one third of the width of the structure facade facing the street must be occupiable space. That second requirement is an architectural constraint, not a site one — it limits how much of the street-facing elevation can be garage.
33 to under 44 feet. Direct vehicular access from the street may be allowed, but only where the property being subdivided is 15,000 square feet or less, and only through a driveway of no more than 12 feet in width. Read the lead-in as well as the exception: Sec. 42-188(g)(2) opens “When proposing one or more narrow lots on a public street”, so subparagraph b is available to that proposal, not to every mid-block lot that happens to measure between 33 and 44 feet.
Narrow lots generally. Otherwise, access has to come through a flag staff, a shared driveway, or a permanent access easement — which is why so much Houston townhouse development is organised around shared driveways rather than individual approaches.
| Situation | What chapter 42 provides |
|---|---|
| Abuts a maintained alley | The alley, unless the director finds it undevelopable or inaccessible |
| Corner property, no usable alley | The side street — unless it is a major thoroughfare, then via flag staff, shared driveway, courtyard access drive or PAE |
| Sole corner lot | The side street |
| Mid-block, lot 44 ft or wider | Sec. 42-188(g)(1) sets conditions on the frontage — at least 20 ft left as unobstructed curb space, and ⅓ of the street-facing facade occupiable — without stating where vehicular access must come from |
| Mid-block, lot 33 ft to under 44 ft, where one or more narrow lots are being proposed on a public street | Direct access from the street may be allowed — not required — where the property is ≤ 15,000 sq ft, via a driveway of 12 ft maximum |
| Mid-block, narrower lots | Flag staff, shared driveway or permanent access easement |
| Existing lot under 33 ft | Direct driveway only if all six Sec. 42-188.5 standards are met |
| Any single-family lot on a major thoroughfare | A shared driveway meeting subdivision B of division II; a flag staff meeting Sec. 42-187, with a turnaround; or a lot over one acre whose plat carries a notation beside it requiring a turnaround that prohibits backing onto the thoroughfare |
Sec. 42-188 and Sec. 42-188.5. Subsections (d) through (h) — which include the alley, corner and mid-block rules — apply only inside the city boundary.
Direct driveway access to a street or type 1 permanent access easement for existing lots narrower than 33 feet is permitted if all the following standards are met: (a) The existing lot was platted with less than 33 feet width, or the property is of an insufficient width to subdivide into multiple equal-sized lots of 33 feet or more prior to September 27, 2023; (b) The existing property does not have usable side or rear access to a public street or a type 1 permanent access easement or an alley maintained by the city or a homeowners association; (c) Each proposed lot will have only one driveway approach of no more than 12 feet in width; (d) The garage building line on each proposed lot must be a minimum of 20 feet; (e) The property proposed to be subdivided is not within 1,400 feet walking distance, measured by walking on sidewalks or other paved surface, from the primary entrance of a primary or secondary school; and (f) The property is not located in an area shown as a Complete Community on the map attached as Appendix A to this chapter and also available on the department’s website.
Sec. 42-188.5 was added by the same 2023 ordinance that created courtyard style development. Its opening words matter: access is permitted if all the following standards are met. There is no weighing. The section does not describe itself as the only route to a direct driveway for a lot under 33 feet — that follows from Sec. 42-188(g)(2)a, which otherwise sends narrow lots to a flag staff, shared driveway or permanent access easement, and from Sec. 42-188(g)(2)b reaching only lots 33 feet or wider. It is an inference from how the two sections fit, not a statement in either.
Four of the six are about your property: the lot qualifies under Sec. 42-188.5(a); it has no usable side or rear access; each lot gets one approach of no more than 12 feet; and the garage building line is at least 20 feet.
Sec. 42-188.5(a) is worth quoting rather than paraphrasing, because where its date lands changes who qualifies. It reads: “The existing lot was platted with less than 33 feet width, or the property is of an insufficient width to subdivide into multiple equal-sized lots of 33 feet or more prior to September 27, 2023.” The cutoff sits at the end of the second alternative. On the narrower reading it qualifies only that second branch, and a lot platted under 33 feet wide meets subsection (a) whenever it was platted. On the broader reading the date governs both. The tense is the only real evidence either way and it cuts toward the narrower reading — “is of an insufficient width … prior to September 27, 2023” is an awkward thing to say, while “was platted … prior to” would have been natural had the drafters meant it. We do not think the text settles it. If your lot was platted under 33 feet after that date, this is the question to put to the department before relying on the section.
The other two are locational and are the ones that most often decide it. The property must not be within 1,400 feet walking distance — measured along sidewalks or other paved surface, not straight-line — of the primary entrance of a primary or secondary school. And it must not fall inside a Complete Community area as shown on the Appendix A map, which the section says is also published on the department’s website. Both are checkable before you spend anything on design.
Sec. 42-189 is a single sentence and easy to miss at the point where it starts to bind: any subdivision including more than 150 lots must have at least two points of access to a public street outside its own boundaries, separated from each other by at least 250 feet.
Both halves are constraints. A second access point placed near the first does not satisfy the section, and the connection has to reach a public street outside the subdivision rather than an internal one.
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.