West University Place Zoning: What It Means When You Want to Add On

Which rules decide whether you can add on in West University Place?

The city's own zoning ordinance sits in Appendix A of its Code of Ordinances, and the two bodies behind it are the Zoning and Planning Commission and the Zoning Board of Adjustment. For an owner keeping a house and enlarging it, five parts of the city's rules apply at the same time: Article 7A for the dimensions a residential site owes, Article 12 for what an older house may keep, Article 11 for relief from either, Chapter 18 for the permit, and Chapter 82 for the trees standing on the site. The zoning ordinance and the code chapters cited here are the version of 17 March 2026, and Article 12 was last amended by Ordinance No. 3066 on 22 April 2024.

Almost nothing starts without a permit. Section 18-2(a) makes it unlawful to erect, move, improve, remove, construct, enlarge, repair, convert, demolish or alter any structure except to the extent expressly authorized by an effective permit issued by the building official. Section 18-2(c) sets out affirmative defenses for small work, among them ordinary maintenance such as painting or wall papering, a roof repair affecting less than 200 square feet, and development on an area no larger than ten square feet where any structures involved are readily moveable at a cost not exceeding $300.00.

Two dates do a lot of work. Under Article 5, an old building site was established with its present boundaries before October 24, 1987, and a new building site is any other, while Sections 12-103(f) and 12-103(g) measure an addition against the gross floor area the principal building had on the 1987 effective date. Article 3 lists the districts an address can sit in, among them SF, the Single-Family District, the Rotated Corner Overlay District and the Old Building Site Overlay District.

Two table numbers are worth fixing before anything else. Table 7A-6 is the building site dimensions table and Table 7A-7 is the Projections Schedule. Section 5-100(a)(5) cross-references Table 7A-7 for minimum building site dimensions, which points at the wrong table in the 17 March 2026 text.

What is a prior nonconformity, and why does it decide the size of your addition?

A prior nonconformity, a PNC in the ordinance's shorthand, is something on your property that was constructed or established in conformance with the zoning ordinance as it stood at the time and became non-conforming solely because the ordinance was adopted or amended. Section 12-102 lists what can hold that status: a separately-existing building site, a structure, or some aspect, use or part of either. The status attaches on the effective date of the ordinance that made the item nonconforming.

Section 12-100 states the purpose plainly. PNCs may continue, with certain exceptions, until they are removed or terminated, the article does not encourage their survival, and it exists to prevent their enlargement, expansion or extension and to limit the degree of nonconformity. Section 12-101 puts the burden on the owner, because PNC status is an affirmative defense: for each non-conforming item, you prove the status was acquired and that it has not been lost.

An addition is one of the events that ends a prior nonconformity, and Section 12-103(e) says how far: an item loses PNC status to the extent the degree of nonconformity is increased, or to the extent the non-conforming area is expanded, subject to the exceptions the subsection lists. Three separate provisions then turn on a 200 percent threshold, each measured against its own baseline. A side-yard nonconformity on a principal building in an SF district survives a remodeling project only while the building's gross floor area has not increased to 200 percent or more of its gross floor area on the given effective date, meaning the date that nonconformity arose, and only on the same side of the building site as the original nonconformity, with nothing carried over to a new nonconformity on the other side or elsewhere. Section 12-103(f) ends a garage nonconformity at 200 percent of the principal building's gross floor area on the 1987 effective date. Section 12-103(g) ends a driveway nonconformity in an SF district at that same 1987 threshold or on any new, replaced or expanded driveway, and does not reach noncompliance with minimum dimensions for a driveway or maneuvering area on a site with single-family detached use only.

Two things do not end. Section 12-103(h) says PNC status for a non-compliant minimum building site dimension is not lost as to any dimension unless it is brought into compliance, and that such a building site may be improved by any construction, reconstruction, expansion or other project otherwise lawful. Section 12-103(e) keeps a shortage in off-street parking spaces alive through a change in the building, provided the increase in the number of required spaces resulting from the change is provided on an incremental basis.

Other events end status whether or not you add anything. A new principal building constructed after the 1987 effective date loses PNC status for all PNC items relating to the building site, with two exceptions: the rule does not reach principal buildings treated the same as structures constructed prior to a given effective date, and PNC status for a building site dimension is not lost. Conformance for an indefinite period or for 180 days or more loses status for that item, and a use discontinued for 180 days or more loses it too, not counting time when actual construction work prevents the use. A loss of 51 percent or more of a structure's replacement cost to casualty, eminent domain, involuntary demolition or a similar cause ends status, though a building used for single-family residential purposes is excepted except as to non-compliance with framed area regulations.

Three routes run back through the Zoning Board of Adjustment. Section 12-102(e) lets the board grant PNC status to a structure encroaching into a yard, on findings that the encroachment was inadvertent and neither misrepresented to the City nor hidden from City officials (a finding not required where the encroachment commenced before 1970), that it will not cause a substantial adverse effect on other persons, and that it creates no significant health or safety risk. Section 12-105 lets the board extend or reinstate status where a substantial investment was reasonably made in the item or in reliance upon it and the extension is needed to amortize that investment or avoid unreasonable waste of remaining value, and such an exception may allow rebuilding, remodeling or modest enlargement.

Section 12-106 lets the board grant status to a structural item that did not conform when it was built, on six findings, including that the nonconformance was clearly and specifically shown in plans and specifications submitted to obtain a city permit. Section 12-104 works the other way: the administrative official may issue a permit conditioned on bringing an item into compliance where the item has lost PNC status or will soon lose it, substantial work is necessary to achieve compliance, and the person in control of the property shows both willingness and ability.

What is old stock housing, and what does it get you?

Old stock housing is a defined status in Article 2, not a compliment. It means one or more buildings on a single-family detached site meeting two criteria that must both hold at any given time: the principal building was built before 1980, and the gross floor area of all buildings on the site does not exceed the greater of 3,400 square feet or 200 percent of the gross floor area of all the buildings on the site when the principal building was built.

Because both criteria apply at any given time, the status is temporary by design. An addition that carries the total gross floor area of all buildings on the site past that ceiling ends it, and the ceiling counts every building on the site rather than the house alone.

The status is worth two things. Table 7A-3 Note 3 lets the Zoning Board of Adjustment issue a special exception reducing the open area requirement in the rear yard, where the board determines the reduction is reasonably necessary to preserve or protect old stock housing as it then exists or as it may be proposed to be remodeled or expanded up to that same ceiling, and that there will be no substantial adverse impact upon nearby properties. Table 7A-4a cuts the garage parking minimum to 1.0 space per dwelling unit for old stock housing, where the general minimum is 2.0.

Where do additions actually run out of room?

Four figures set the outer limits for a residential site. At least 45 percent of the building site must remain open, at least 35 percent of it must be pervious, the framed area of all buildings on the site may not exceed 80 percent of the building site area, and a principal building may reach a maximum height of 35 feet, 25 feet in the rear yard. Table 7A-4b Note 3 lifts that last ceiling for an existing flood loss structure being raised to meet floodplain regulations, by the distance the structure is elevated and in no case past 39 feet and 27 feet in the rear yard setback.

Table 7A-2 states the yard rule as its general rule: no part of any structure may be located within a part of a building site included within a yard the table defines by district. Front yard depth is keyed to the depth of the building site, and the interior and street side yards are each set as the greater of a share of the site width or a fixed minimum, so two sites on one block can owe different setbacks. Section 8-110(b) then sets its own minimum street side yard by building site width, from 10 feet on a site under 60 feet wide up to the front-yard setback distance on a site of 80 feet or more. A site that extends all the way through a block, with street area at front and rear, has no rear yard and is treated as having two front yards. Table 7A-2 Note 2 offers alternate side yards on a narrow site that meets five criteria, including alternate setbacks designated in a form approved by the administrative official and a garage located in the rear yard.

Table 7A-7, the Projections Schedule, is where the details of an addition get settled. Eaves, cornices, roof extensions, bay windows with no floor space, windowsills and cantilevered building space may project 24 inches into a side yard, with no item below the eave closer than 36 inches to the side property line, and 15 inches into a front or rear yard; that area does not count as open area. A chimney or fireplace with a cross-sectional area of 8 square feet or less projects 12 inches into a side yard, and its area counts as neither open nor pervious. A porch, platform or deck higher than 14 inches gets no projection into a side or rear yard, and none into a front yard except as the schedule's Note 1 provides, and counts as neither open nor pervious, though the area beneath a deck may count as pervious where rain is allowed to pass through. Ground-level items not higher than six inches, sidewalks, patios, driveways, parking areas and retaining walls among them, count as open area but not as pervious area unless the material is completely pervious to water.

Which space counts is its own question. Gross floor area is measured from outside dimensions on each floor level and excludes attached garages, basements or attics used only for storage, and opened or screened porches, except where the gross floor area of the main space is 1,100 square feet or more, in which case half the porch square footage counts. Framed area is a separate measure from Schedule FA: all floor and ground areas under a solid, fixed roof except the uncounted areas the schedule lists, measured on each level to the outer main wall surfaces. Table 7A-4b allows one dwelling unit plus one accessory quarters, and accessory quarters is a dwelling unit on the same building site as a single-family detached principal building that includes no more than six hundred square feet of gross floor area.

What happens to the garage and the driveway when you add on?

Table 7A-4a sets the standing requirement: 2.0 garage parking spaces per dwelling unit, 1.0 for old stock housing, each enclosed or semi-enclosed and adjoining a driveway, with a maximum keyed to building site area and capped at 4.0. An accessory building containing garage space may hold no more than 600 square feet of gross floor area in non-garage space.

Section 12-103(f) puts two triggers on a garage nonconformity. It is lost if an existing garage is removed, destroyed or converted to a non-garage use, and it is lost if space is added to the principal building so that its gross floor area is increased to 200 percent or more of its gross floor area on the 1987 effective date.

Section 12-103(g) is broader, because a driveway can be lost without any addition at all. A driveway nonconformity in an SF district is lost if a new driveway is constructed, if an existing driveway is replaced or expanded, or if space added to the principal building reaches that same threshold. The subsection does not reach noncompliance with minimum dimensions for a driveway or maneuvering area on a site with single-family detached use only.

Table 7A-4a Note 1 is the way back. The board may issue a special exception for a parking area, garage or driveway in another location or with a different design if it finds the alternative will not unreasonably interfere with available light and air and will not significantly alter access for fire-fighting and similar needs, that it will prevent the destruction of a qualified tree, that in the case of remodeling a principal building the location requested is the same as an existing parking area, garage or driveway, or that the location or design is necessary for safety considerations.

How does the Zoning Board of Adjustment decide a variance?

Article 11 divides the board's work. It may grant variances only in those instances specifically allowed by state law, subject to any limitations the ordinance prescribes, and it may issue special exceptions only where this ordinance allows them. The state-law test in Section 211.009(a)(3) of the Texas Local Government Code (read September 2026) is a variance in a specific case where it is not contrary to the public interest and, due to special conditions, a literal enforcement of the ordinance would result in unnecessary hardship, so that the spirit of the ordinance is observed and substantial justice is done.

Section 211.009(b-1) lists grounds the board may consider in deciding whether compliance as applied to the structure under appeal would be an unnecessary hardship: the financial cost of compliance is greater than 50 percent of the appraised value of the structure as shown on the most recent appraisal roll certified to the assessor, compliance would cost the lot at least 25 percent of the area on which development may physically occur, compliance would leave the structure out of compliance with a municipal ordinance, building code or other requirement, compliance would result in unreasonable encroachment on an adjacent property or easement, or the municipality considers the structure a nonconforming structure. Each is a ground the board may weigh.

The limits are written just as plainly. Section 11-102(a) says a special condition or hardship that is self-created, personal or based only on financial reasons is not sufficient to support the issuance of a variance, and the board must make every finding state law requires and reduce the variance to writing with its conditions. For a special exception, Section 11-102(b) asks the board to determine that the exception will cause no significant increase in on-street parking, no substantial traffic congestion, no substantial increase in traffic and no unreasonable burden on utility systems or other public facilities, and that it is in harmony with the general purpose and intent of the section. Section 11-102(c) leaves the burden with the applicant to persuade the board that each circumstance is present and each finding is supported by substantial evidence. Section 11-103 lets the board attach conditions or a temporary period, and says no variance or special exception grants any property right or vested right. Section 11-104 lets the board treat protection or preservation of old stock housing as a factor in the hardship test, for the house as it exists or as proposed to be remodeled or expanded.

The process is public. For the applications Section 11-101(a) covers, the applicant gives notice and holds a public briefing before filing, mailing notices no later than the 10th day preceding the briefing to owners of property and city utility ratepayers for premises located wholly or partly within 200 feet, to the City Secretary and to the administrative official, and holding the briefing within one mile of the site. Section 11-101(b) asks for a written application signed by the owner of the site and the proposed operator, if different, identifying the specific provision at issue, proof of ownership, a plat prepared by a registered public surveyor showing the site, adjacent areas and existing and proposed structures, and the filing fee for that type of application. Section 11-101(c) allows the administrative official or the board to send the application to a third-party consultant, at the applicant's cost, paid in advance unless the official or the board prescribes otherwise, and a hearing may be postponed to allow time for it. Section 11-101(d) requires mailed notice on or before the tenth day preceding the hearing to the owners of building sites located within the City and wholly or partly within 200 feet, as shown on the most recent tax roll of the City, plus publication or posting.

Then it comes to a vote. Under Section 211.009(c), a concurring vote of 75 percent of the members is necessary to authorize a variation from the terms of a zoning ordinance. Section 15-102 gives the board the number of members prescribed by the Charter, with regular positions numbered 1 through 5 and alternates A1 through A4, a quorum of four, residency at the time of appointment, and no compensation.

What does the permit sequence look like for an addition?

The city publishes its own order of operations for a remodel or an addition, read September 2026. A homeowner, contractor, architect or designer may request a pre-development meeting first. Simple work can be processed over the counter, while more complex plans needing review of zoning, building setback requirements or pervious calculations go behind the counter, which takes approximately 10-15 business days when everything is submitted accurately. Pool plans go from the building official to a third-party planning consultant, if needed, for a zoning compliance review inside the same window. Rejected plans are picked up, corrected, resubmitted, and the review window starts over. Applications and fees are taken at the permit office Monday to Friday, 7:30 a.m. to 4:30 p.m., and inspections are conducted on Tuesday and Thursday.

Trees gate the permit rather than follow it. Once a permit for development or pre-development activity is in effect on a site, all large trees on that site are protected trees, and Section 82-3(c) says the building official shall not issue any such permit until the applicant has filed a tree survey the urban forester has approved and tree disposition conditions approved by the urban forester have been inserted into the permit. Section 82-3(d) excepts the low-impact case: apart from the requirement to insert those mandatory conditions, the section does not apply to a site, project or activity that will not have any significant, adverse effect upon any large tree, as the urban forester determines. Tree fencing then goes in according to the site plan.

Each permit carries a term. Under Section 18-10(a), a permit for remodeling or additions smaller than 485 sq ft of gross floor area runs to noon on the 180th day following the day of issuance; swimming pools, spas and accessory structures run the same length, and so do mechanical, electrical or plumbing permits unless they are associated with a master permit whose term ends later; fence, driveway or sidewalk and tree permits run to the 90th day; demolition and building moving run to the 60th; all other types run to the 360th. Renewal applications must be filed on or before the fifth day preceding the day of expiration. Section 18-61 asks a permittee for pre-development or major development work to keep temporary fencing at least 5.5 feet high, fully enclosing the rear of the site and the sides, subject to any restriction to the contrary in the zoning ordinance.

Decisions get reviewed in two places. An applicant or permittee who is directly and adversely affected may request a review, and Section 18-7 sends it to the Building Standards Commission, except where the action rests on the zoning ordinance, in which case the hearing board is the Zoning Board of Adjustment, and an application filed more than 30 days after the action needs good cause. On the state-law side, the owner, the applicant or an owner of real property within 200 feet who is aggrieved may appeal an administrative official's decision by filing a notice of appeal, specifying the grounds, with the board and that official not later than the 20th day after the date the decision is made. The appeal stays proceedings unless the official certifies in writing that a stay would cause imminent peril to life or property, the board decides at the next meeting for which notice can be provided and not later than the 60th day after the appeal is filed, and a petition to a court is presented within 10 days after the date the decision is filed in the board's office.

What can this page not tell you?

Whether your site is an old or a new building site, and whether any feature of the house holds prior nonconforming status, are record questions. They are answered from the plat, the permit file, and the approved site designation forms, which are filed in the Administrative Official's Office and in the Harris County Real Property Records when two or more building sites are merged or divided.

The gross floor area the principal building had on the 1987 effective date lives in the city's file rather than in a listing, and the garage and driveway tests above are measured against it. The side-yard test runs from the building's gross floor area on the effective date that made that side yard nonconforming, and the old stock housing ceiling from the gross floor area of all buildings on the site when the principal building was built, so the three tests can start from three different figures. Ask Community Development what the file shows before drawings go far.

Whether a particular set of drawings wins approval is answered by the city rather than in advance. Simple work is processed over the counter and more complex plans go through plan review. Where the drawings need a variance or a special exception, the Zoning Board of Adjustment decides after a hearing, the applicant carries the burden of evidence and persuasion, and no grant creates a property right or a vested right.

What the permit will cost comes from the city's fee schedule, which is a separate document. Community Development publishes it, and the number the city publishes for code questions and pre-development meetings is 713-662-5833.

Where the district boundaries fall is settled by interpretation rather than by reading a street name. Section 4-101 adds that any area not clearly included in another district is within the SF-3 District, so the district an address sits in is a question for the administrative official.

Which trees on the site are protected takes a survey. A large tree is one with a circumference of 19 inches or more and a significant tree one of 36 inches or more, and the tree survey must depict every large tree in the site plus every large tree elsewhere with 30 percent or more of its critical root zone inside it.