On September 29, the owner of the land at 12201 Heatherly Drive in far southeast Austin filed to extend a site plan the City approved in November 2023. The request, case SP-2022-1361C(XT), asks the director for one more year on an approved plan for Treeline Apartments, an 11-acre multifamily site in ZIP 78747. The same address carries 30 building permits issued between August 28 and September 3, 2024, and the City's permit feed lists the same expiry date on every one of them: October 16, 2026.
Two clocks, then, on one property: one on the approved plan, one on the building permits. If you live near a site like this, or you are looking at a home or an apartment across the street from one, knowing which clock is which tells you a lot about what is likely to happen next, and what is not.
What was filed
The City's record for the extension, as mirrored in the Zabalist research database, reads: "The applicant is requesting a 1-year administrative extension for an approved site plan." It lists the zoning as MF-4 (multifamily, moderate density), the watershed class as Suburban, the council district as 5, and impervious cover at 64.9 percent, the same figure as the original plan. The record was last synced on October 10, 2026. The case status is "CC Pending," and we are not going to guess what the city means by that abbreviation; the City's own permit page for the case is the place to read it.
| Record | Filed | Status | What it is |
|---|---|---|---|
| SP-2022-1361C | Aug. 15, 2022 | Approved and Released, Nov. 9, 2023 | The site plan: new development on 11.32 acres |
| SP-2022-1361C(XT).CC | Sept. 29, 2026 | CC Pending | Request for a one-year administrative extension |
Why a plan gets extended
A released site plan does not last forever. In a September 2025 City staff report on an unrelated church site, the history lists a plan administratively approved on December 30, 2014 with a permit expiration of December 30, 2017: three years. The same report quotes the code. Under Land Development Code section 25-5-62(C), "the director may extend the expiration date of a released administrative site plan one time for a period of one year" if there is good cause. Longer extensions go to the Land Use Commission under 25-5-63(C), and that report recommends a three-year one.
We did not find the code section that sets the first expiration date, and the City's record we read does not state one for Treeline. If the same three years applied here, the approval of November 9, 2023 would run out this November. That is our inference, not a City statement, and it would explain why the request arrived in late September. It is worth asking the City's Development Services Department for the actual date.
The second clock: 30 building permits
Separate from the site plan, the City issued building permits for the property between August 28 and September 3, 2024. We pulled every permit at that address from the City's Issued Construction Permits dataset, which the City updated on October 11, 2026.
| Group | Permits | Status in the feed |
|---|---|---|
| Apartment buildings 1 through 9 | 9 | Active (28 housing units listed on each) |
| Clubhouse, leasing office, gym, maintenance garage, pool pump house, trash and EV chargers | 7 | Active |
| Carports, garages and a lift station | 14 | Withdrawn |
| All permits | 30 | Expiry date listed: Oct. 16, 2026 |
Twenty-eight of the 30 show a status date of July 13, 2026 and two show April 8, 2026. The City's permit page explains the usual rule: "Once a permit is activated, it expires on the 181st day if the project has not been scheduled nor received an inspection." A passing inspection extends the expiration date by 180 days, and "a 'Canceled' and/or 'Failed/No Work Performed' inspection result does not extend the expiration date." So an expiry date on a permit is a moving target, and it is reset by inspections, which this dataset does not list. We cannot tell from it whether inspections have happened.
What the records do and do not say
A Texas accessibility registration, TABS2025013403, was filed for "The Bridge @ Treeline" at the same address on March 5, 2025. It describes nine residential buildings with 330 units, three clubhouse buildings and one maintenance building, a start date of July 10, 2025 and a completion date of March 12, 2027. Those are the filer's estimates. Its funds line says the project involves public funds.
Two things do not line up neatly. First, the City's permit feed lists 28 units on each of the nine apartment buildings, which is 252, not 330. We cannot reconcile that from public data and are not going to pick one. Second, the site-plan record still calls the existing land use "Raw/Undeveloped," which is how the application was filed and says nothing about what is on the ground today. None of the records we read says whether a slab has been poured. Drive past, or look at the satellite view, before you decide anything.
Extensions are getting more common
The Heatherly request is one of many. We counted site-plan cases in the Zabalist database whose permit number ends in an extension suffix, "(XT," by the date the application was filed.
| Period filed | All site-plan cases | Extension requests | Share |
|---|---|---|---|
| 2025, full year | 503 | 43 | 8.5% |
| 2026, Jan. 1 to Oct. 9 | 404 | 52 | 12.9% |
Fifty-two extension requests in a little over nine months of 2026, against 43 in all of 2025. The share rose from about one in twelve to about one in eight. Shares and sums are our arithmetic. The data cannot say why. Approved plans that have not started, or that are waiting on financing, are one reading; a plan that is already under construction and just needs its paperwork kept alive is another, and Heatherly may be that.
What this means if you're buying or renting nearby
An extension is not a start date. It keeps an approved plan alive. It does not say when, or whether, construction begins. It also does not change what was approved: the plan's zoning, its 64.9 percent impervious cover and its drainage design are the ones the City already reviewed in 2023.
An active permit is not an inspection. A permit that is "Active" with a future expiry date tells you the City has not lapsed it. For the construction window next door, the more useful records are inspections and the next permit renewal.
Ask the right office. Our guide to what is being built near an address covers where to look. For the full filing history, the Zabalist record for the case is here. For other projects in the pipeline, see our Austin development page.
If you are shopping for a home or a lease, a large approved multifamily site in the same ZIP is a fact about the land use around it, not a prediction about prices or about anyone's day-to-day. Ask for the plan, read it and visit at different times of day.
We also covered a very different site-plan story last Monday: Austin's new density bonus meets a 7-acre Govalle rezoning.
How we pulled this
Site-plan records come from the Zabalist research database, which mirrors City of Austin development applications (freshness table: last sync October 11, 2026 for site plans). Building permits come from the City's Issued Construction Permits dataset, selected by permit address starting with "12201 HEATHERLY." The extension rule is quoted from a City staff report. We did not use any MLS data, and this piece makes no statement about home prices.
This is general information, not advice about a particular property or permit.
One next step
If a project like this sits near a home you are considering, a local agent can pull the plan and permit records for that address with you before you make an offer. Start at our get started page.