Picture two three-bedroom brick homes in Schertz, built the same year, same square footage, half a mile apart. One sells without a hitch. The other gets an offer, then a lender asks a question nobody prepped the buyer for, and the deal wobbles for a week before it closes. The difference wasn't the kitchen or the roof. It was a line in the disclosure packet that both buyers skimmed past on their way to the signature page.
That line is the military installation notice that Texas has required on every residential seller's disclosure statewide since September 1, 2017. In Schertz, it isn't boilerplate. It corresponds to an actual set of mapped zones around Joint Base San Antonio-Randolph, and depending on which side of an invisible boundary a house sits on, it can shape what was built there, what can still be built there, and what a lender or insurer wants to know before they sign off.
The paragraph everyone skims
Texas Property Code Section 5.008 spells out exactly what a seller has to disclose about a home's condition, and since House Bill 890 and its Senate companion added the requirement in 2017, every notice statewide now has to flag that a property may sit near a military installation and could be affected by high noise or by what the Air Force calls an Air Installation Compatible Use Zone, or AICUZ. The form points buyers toward the installation's own AICUZ study for details, and leaves it there.
Most buyers treat this the way they treat the smoke detector paragraph two lines up: a formality to initial and move past. Around Randolph, that's the wrong instinct. The most recent AICUZ study covering Randolph dates to 2017, and it exists specifically because Schertz, Universal City, and Converse sit close enough to its runways that flight patterns and accident-potential planning genuinely intersect with residential growth.
What the zones actually are
The AICUZ framework breaks the area around Randolph's runways into distinct zones, each with its own land-use guidance. Universal City, whose city limits border Randolph directly, publishes the clearest public breakdown:
| Zone | How it's defined | General guidance |
|---|---|---|
| Clear Zone (CZ) | Extends 3,000 feet beyond the runway end | Land is meant to stay undeveloped; historically the Air Force has acquired ground here outright |
| Accident Potential Zone 1 (APZ 1) | 3,000 feet wide by 5,000 feet long, starting past the Clear Zone | Only low-density, low-intensity land uses are recommended |
| Accident Potential Zone 2 (APZ 2) | 3,000 feet wide by 7,000 feet long, beyond APZ 1 | Land use planning and controls are strongly encouraged, though not federally mandated |
Some of these zones carry recommended density caps as low as one to two dwelling units per acre, and homes built within certain noise contours have historically needed added sound attenuation in construction. None of this is hidden. It's published, mapped, and has been since the current study went into effect. It's just not something a listing photo or a portal search filter will ever tell you.
Universal City has gone a step further than most jurisdictions and built a public web map where anyone can enter a specific address and see whether it falls inside the Clear Zone, APZ 1, or APZ 2. That tool exists precisely because the zone boundaries don't follow subdivision lines or school district maps. Two houses on the same street can fall on opposite sides of a zone boundary.
Why builders talk about this like a cost, not a curiosity
This isn't just theoretical for the people building homes in the corridor. In a 2018 look at how neighboring cities were managing growth around the base, a Pulte Group marketing executive named Brad Lacy told the San Antonio Report that the AICUZ and Joint Land Use Study guidelines "occasionally make it difficult for developers to build homes at affordable prices" in the submarket, even as he called the area some of the most attractive ground Pulte works in given its proximity to the base, Loop 1604, and I-35. That's an industry insider describing a real constraint on supply, not a compliance footnote.
For a buyer, the practical version of that same constraint shows up later, at resale or at renovation. A homeowner in APZ 1 who wants to add a detached structure or increase density on a lot may run into land-use guidance the neighbor two zones over never has to think about. A homeowner outside any zone never encounters the question at all.
Checking before you write an offer
The disclosure paragraph is a prompt to look something up, not a formality to sign past. Before you write an offer on a Schertz property near the base:
- Pull the specific address on Universal City's AICUZ map to see which zone, if any, applies.
- Ask the listing agent whether an updated Joint Land Use Study has touched that block since the current AICUZ study was published.
- If the address falls inside APZ 1 or APZ 2, ask your lender and your insurer directly whether it affects underwriting or premiums for that particular property. This varies by lender and isn't something a portal listing will surface.
- Treat the disclosure notice's military installation paragraph as the start of a conversation with your agent, not the end of one.
The subdivisions doing the talking
Schertz's growth story right now runs through two very different kinds of neighborhoods, and both sit within a few miles of Randolph's gates. The Crossvine, a master-planned community off FM 1518 and Lower Seguin Road, is being built out over an expected ten-year span across more than 500 acres, with builders including Highland Homes, Chesmar, and Scott Felder putting up everything from garden homes to single-family houses, and Highland's own site puts the community about five miles from Randolph AFB. On the other end of town, established neighborhoods like Savannah Bluff offer mature trees and larger homesites on streets that were platted decades before The Crossvine broke ground.
Neither type of neighborhood is automatically inside or outside an AICUZ zone. That's the point. Vintage and builder don't determine zone status. Location relative to the runway does, which is exactly why a five-minute map check matters more than which subdivision brochure you're holding.
Why the number you saw online might not be the number that matters
Here's where this connects to more than one paragraph in a disclosure packet. Pull up three different sites for Schertz home values on the same week this summer and you'll get three different stories. One automated valuation index put the typical Schertz home value at $336,849 as of its June 2026 update, essentially flat, up just half a percent over the year. A live listings tracker showed Schertz homes going to market in July 2026 at a median asking price of $419,000. Other recent sold-price trackers have put the actual closed median somewhere in the high $300,000s.
That's a gap of roughly $80,000 depending on whether you're looking at an automated index, a live asking price, or a recent closed sale. None of those numbers is wrong. They're measuring different things: a model's estimate of typical value, what sellers are asking right now, and what buyers actually paid last month. Layer the AICUZ zone question on top of that, along with lot size, subdivision age, and finish level, and you can see why a single median pulled off a portal homepage tells you almost nothing about what a specific house on a specific street is actually worth.
That's the gap an appraisal background is built to close. Pricing a Schertz home well means pulling comparables that actually match on zone, vintage, and lot, not averaging across a city where an older home in an established neighborhood like Savannah Bluff and a new build in The Crossvine both get counted in the same median.
Frequently asked questions
Does the military installation paragraph mean a home is unsafe? No. It's a disclosure requirement, not a safety rating. The same paragraph now appears on disclosure forms statewide near any Texas military installation, regardless of whether a given property falls inside a mapped zone at all.
Does being near Randolph AFB affect financing or insurance? It can, depending on the lender and insurer, particularly for a property confirmed to sit inside APZ 1 or APZ 2. This isn't standardized across every loan program, so the right move is asking your specific lender and insurer about that specific address rather than assuming either way.
Where do I actually check a Schertz address? Universal City's AICUZ zone map is the most direct public tool for the area bordering Randolph, and it's worth checking before you write an offer, not after you're under contract.
If you're weighing a purchase near Randolph or trying to price a Schertz listing correctly against a market that's currently reporting three different median numbers in the same season, this is exactly the kind of question worth asking before you're deep into a contract deadline. Melissa Boehringer brings 25 years of appraisal experience to exactly these situations. Schedule a free consultation to talk through what a specific Schertz address means for your price, your financing, and your timeline.