A Richmond address, Houston’s ETJ, and nobody’s building code

Air Conditioning and Heating in Aliana

Aliana is the clearest illustration in Fort Bend County of a point this whole site keeps making: the city on your envelope has nothing to do with who regulates your house. The mail says Richmond. The extraterritorial jurisdiction is Houston’s. And the mechanical code that applies is none.

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Jurisdiction: Unincorporated Fort Bend County, within the City of Houston’s ETJ. Outside any city’s corporate limits
Mailing address: Richmond, TX — a postal routing decision. Richmond’s adopted codes do not apply here
Mechanical permit for a changeout: None. No city mechanical code applies and the county issues no mechanical permit
Contractor registration: None applicable. The contractor’s TDLR license is the only credential in play
Build era: Introduced to the Houston market around 2008 and built out through the 2010s. Roughly 3,200 households as of 2018, with 4,200–4,500 homesites planned at buildout
Where the equipment sits on the clock: First service interval to first replacement, depending on the section

Three Different Answers to “Where Is This House?”

The postal answer is Richmond. The county answer is unincorporated Fort Bend County. The municipal answer is the City of Houston’s extraterritorial jurisdiction — which sounds like a fourth kind of city authority and is in fact the opposite of one.

An ETJ is unincorporated land adjacent to a city over which that city holds certain limited powers, principally over subdivision and platting. It does not include building codes or building permits. The Texas Supreme Court settled that for general-law cities in Town of Lakewood Village v. Bizios (2016), and the Dallas Court of Appeals extended the reasoning to home-rule cities — Houston included — in Collin County v. City of McKinney (2018): every municipality needs legislative authorization to enforce building codes beyond its corporate limits, and none has it.

So: Richmond’s 2024 International Codes do not apply to Aliana. Houston’s codes do not apply to Aliana. Fort Bend County has adopted no residential building code and issues no mechanical permit. A complete heating and cooling changeout on an Aliana house is work that no permit governs and no inspector sees.

A note on the Census, since it comes up: Aliana is not a census-designated place, so there is no Census Bureau population figure for it. Any number circulating for “Aliana’s population” is an aggregator’s estimate drawn around a boundary of its own choosing.

What That Actually Costs a Homeowner

Nothing, on the day of installation. That is the difficulty with it. Every failure mode a mechanical inspection is there to catch is invisible on day one and expensive over the following decade.

Sizing. An oversized system blows cold air immediately and short-cycles for fifteen years, never running long enough to dehumidify. Both the IRC and the IECC require equipment to be sized from a calculated load; with no permit, nothing verifies that one was done. This is the failure most likely to be present in a house like this one.

Return-air capacity. Sets a ceiling on what any equipment can deliver, and is not visible from a hallway.

Condensate routing. The auxiliary pan, the secondary drain line and the float switch all sit above a finished ceiling. The first evidence they were done badly is a stain in a bedroom.

Duct static pressure. A two-minute measurement almost nobody takes. High static means new equipment will never deliver what its rating implies.

None of that is an argument for despair; it is an argument for asking. Inside a city the permit is the backstop. Out here the load calculation is the only backstop, and you are the only person who will ever ask for it. See sizing and load calculations.

2010s Equipment, Arriving on Schedule

Aliana came to market around 2008 and built out through the 2010s, which places it squarely in the county’s largest housing cohort — the 30.3% of Fort Bend County housing completed between 2010 and 2019. That equipment is now seven to sixteen years old, out of the manufacturer’s standard parts warranty in most cases, and in a market where a 10-to-15-year national life expectancy runs short because of the runtime.

Two things are worth doing on a house of this age while nothing is wrong. Establish whether the manufacturer’s parts warranty was registered. Coverage is typically five years by default and ten if the equipment was registered inside 60 or 90 days of installation — a step that on a builder-installed system is somebody else’s job and on a resold house is frequently nobody’s. One call to the manufacturer with the model and serial number settles it, and if the house was bought second-hand, ask about transfer at the same time.

And have the condensate protection looked at. On a system installed in 2013 and never serviced, the pan, the secondary line and the float switch have not been touched since the house was built. That is the failure that damages the house rather than the one that stops the cooling. See builder-grade systems and first replacement.

Where to Go From Here

Read AC permits in Fort Bend County for the full jurisdiction picture, then sizing and load calculations for what to ask a contractor to produce in place of an inspection. Builder-grade systems and first replacement covers the warranty questions for equipment of this age.