An executor lists her late father's house on a quiet street off Camp Craft Road. The house shows well. The buyer's inspector runs a camera through the lateral lines and asks a simple question: when was this system last pumped, and is it on a three-year schedule or a seven-year one. The executor has no idea a schedule even exists. Her father never mentioned it, and nothing in the listing photos or the survey would have told her to ask.
That question is not a formality. In West Lake Hills, the answer depends on which side of a line drawn by the Edwards Aquifer Recharge Zone a given lot happens to sit on, and that line has nothing to do with the age of the tank, the size of the household, or how carefully anyone maintained the system. It is geology, written into a city ordinance most sellers never read until a transaction forces the question.
The Ordinance That Splits The City Into Two Schedules
The City of West Lake Hills adopted Ordinance 2020-018, which sets the pump-out interval for residential septic systems at once every three years for properties located in the Edwards Aquifer Recharge Zone, and once every seven years for properties outside it. The city enforces this directly, and the interval is not a suggestion. It is a maintenance obligation tied to the property, not to the owner.
| Location relative to Recharge Zone | Required pump-out interval |
|---|---|
| Inside the Edwards Aquifer Recharge Zone | Every 3 years |
| Outside the Edwards Aquifer Recharge Zone | Every 7 years |
The city has said plainly that it adopted stricter rules than the state minimum because of its own topography and drainage, including shallow soil and proximity to the Edwards Aquifer and the tributaries that feed the Colorado River. That reasoning matters less to a seller than the practical result: the interval is not something you can estimate by looking at the house, the lot, or even the neighbor's records. It is fixed by a boundary that runs through the city and does not track with subdivision lines, street names, or price point.
What The Zone Doesn't Tell You From The Curb
Before the aquifer zone question even applies, there is a prior one: is the home on septic at all. West Lake Hills is not uniform on this point. A meaningful share of properties in the city run on private septic systems rather than centralized wastewater service, and water itself is delivered by Travis County Water District 10 rather than a single citywide utility. Two homes with similar footprints and similar list prices can carry entirely different utility arrangements, and neither the sale price nor the street name signals which is which.
This is why a listing photo or even a walk-through tells a buyer very little about what they are actually inheriting in terms of obligations. The septic question, the wastewater question, and the aquifer zone question are three separate facts that happen to converge on the same property, and none of them show up until someone asks or an inspection forces the issue.
The Paperwork That Turns This Into A Disclosure Problem
Texas Property Code Section 5.008 requires most sellers of a single-family home to deliver a written disclosure notice. When a septic system is present, that notice is paired with a separate form, commonly known by its Texas REALTORS form number TXR-1407, which spells out the type of system, its age, and its maintenance history.
For a typical seller who has lived in the home and handled its upkeep, filling that form out is a matter of pulling old invoices. For an executor or an heir, it often is not. The person who knew the maintenance history is the person who died, and the paperwork trail can be thin, scattered, or simply gone. That gap does not exempt the seller from disclosing what is known. It raises the stakes of getting the disclosure right, because Texas law treats a seller who conceals a known defect, whether a failing drain field or a tank well past its required pump-out date, as exposed to a deceptive trade practices claim, which can include actual damages and attorney's fees.
Texas law does carve out a short list of transactions that fall outside the disclosure requirement entirely, including foreclosures and transfers between spouses. New construction that has never been occupied is treated differently as well. None of those exceptions cover the ordinary case of an executor selling an inherited home to a third-party buyer, which means the estate sale scenario sits squarely inside the disclosure requirement, at the exact moment when the seller has the least first-hand knowledge to disclose from.
Financing Adds Its Own Deadline
If the buyer is financing with an FHA or VA loan, the septic system has to meet minimum property standards before the loan can close. That is not a negotiable timeline item. Any deficiency identified during underwriting has to be repaired before closing, not folded into a post-closing punch list. For an estate sale where heirs are waiting on proceeds to be distributed, a septic deficiency discovered late in the process can push a closing date by weeks.
The cost of getting this wrong is not trivial. A failed or undersized septic system in this part of the Hill Country can run fifteen thousand to forty thousand dollars to replace, depending on soil conditions and the type of system required. That is a wide enough range that guessing is not a strategy. Knowing which pump-out interval applies, and whether the system has actually been kept current against it, is the difference between a routine service call and a five-figure repair discovered during option period.
Renovation Plans Run Into A Second City, Not Just A Second Zone
West Lake Hills is its own incorporated city, separate from the City of Austin, with its own building department and its own review process for both septic inspections and tree and vegetation questions. The city's own staff directory routes both categories of question to the same contact, which is a useful signal that the two issues are handled together locally rather than through Austin's separate arborist office.
This matters for anyone planning work on a West Lake Hills property before listing it, or for a buyer planning changes after closing. Assuming that Austin's permitting rules apply, because the mailing address says Austin and the MLS area looks similar to neighboring Austin zip codes, is an easy and costly mistake. Protected and heritage trees are locally regulated here, and disturbing a protected tree's root zone typically requires a permit before any grading, trenching, or foundation work begins near it. For an estate seller weighing whether to update a house before listing, or a buyer already picturing a pool or an addition, that permit process needs to start with the City of West Lake Hills directly, not with assumptions carried over from Austin.
What This Means If You're Handling An Estate Or Planning A Sale
A few things are worth confirming before a West Lake Hills property goes under contract, not after:
- Whether the home is served by private septic or centralized wastewater, since the two carry entirely different obligations and neither is visible from the outside
- Which side of the Edwards Aquifer Recharge Zone the lot sits on, since that determines whether the pump-out interval is three years or seven
- The date of the most recent pump-out and inspection, matched against whichever interval applies
- Whether any planned renovation near mature trees will require a permit from West Lake Hills specifically, separate from any City of Austin process
For an executor working through an estate, the most useful step is often the simplest one: order a septic inspection before listing rather than guessing at what the disclosure form should say. A documented inspection replaces uncertainty with a paper trail, and it gives the disclosure form something accurate to report instead of a blank field or a best guess.
A Few Questions Worth Asking Before You List
How do I find out which aquifer zone my West Lake Hills property is in? The city maintains zoning and boundary maps through its building and development office, and that is the direct source rather than relying on a general sense of where the recharge zone runs.
Does the disclosure requirement still apply if I inherited the home and never lived in it? In most cases yes. The exemptions in Texas law are narrow, covering situations like foreclosures and spousal transfers, and an ordinary sale by an heir or executor to a third-party buyer does not fall into those categories.
What if there are no maintenance records at all? A missing paper trail is common in estate situations and is not, on its own, a legal problem. The safer path is a current professional inspection that documents the system's actual condition, so the disclosure reflects verified fact rather than silence.
Selling a home that carries someone else's history, and someone else's paperwork gaps, is exactly the kind of transaction where the details matter more than the market headlines. If you're settling an estate or preparing a West Lake Hills property for sale and want a clear read on what the septic records and disclosure forms actually require before you list, Roxanne Escobedo offers a confidential consultation to walk through it with you.
