How to Read Austin ZIP Building-Permit Reports

Last reviewed September 17, 2026 · City of Austin issued permit records · Kimbrough Gray · KiliGray Homes

The ZIP reports pair issued-permit records with local analysis. Units count new housing authorizations; project groups and lot-size tables answer different questions. This reference explains those distinctions, the historical grid and the limits of using permits to estimate construction competition. Each dated review identifies the records it examined.

Applies to: KiliGray’s historical Austin ZIP building-permit reports and their published data tables.

Units and project groups run on different clocks

Units is newly authorized housing counted when the contributing building permit enters the issued series. Projects groups lots into a cohort at their first qualifying entry. Later permits can add units after the group was first counted.

For example, the September 2025–August 2026 78736 review contains 48 unit authorizations but only two newly counted groups. Dividing those numbers would not establish 24 homes per development. To understand the work, open the individual unit records.

What the housing-size columns include

One-, two- and three-unit site categories describe the total dwellings assigned to a site, including a retained home where recorded. They do not establish attached versus detached form or the number of newly authorized homes. Recent classifications may change when related permits arrive.

The historical series retains records outside those three displayed categories. The 78751 review, for instance, includes a four-unit record on Avenue D. Consequently, the three mix columns need not sum to every Projects total or reproduce Units. Larger-site classifications have not been validated for display. Buildings with five or more units are excluded from this series.

The separate lot-size history

The lot-history tables group permits by parcel and issue year, using a normalized address when the parcel identifier is missing. They classify total homes associated with that year’s lot group. These figures are separate from the monthly unit authorizations and should never be added to them.

A multi-building sequence that crosses a year boundary can be split between annual groups. A dagger marks recent periods whose categories are still provisional. Earlier sample checks found weaker agreement for three-unit lots than two-unit lots and poor agreement for larger groups; the latter are withheld. Inspect individual records when a grouping is material to a decision.

Zeros, dashes and blank cells in the historical grid

0: no units assigned to this ZIP for the month, with ZIP information complete across the citywide records for that month.
Dash: no units assigned here, but some citywide records have no ZIP. A missing location could change the result.
Blank: a future month, rather than a measured zero.
Bold, bordered cell: a month reaching at least 60% of this ZIP’s highest recorded monthly total.

History starts in 1981. Older ZIP assignments and permit details can be incomplete or erroneous; a long run of zeros is not proof that no homes existed or were built.

Street summaries and City record links

The local reviews use the same building-level unit contributions as the report’s Units column. Street totals combine those contributions by the street label in the recorded address. Building and unit suffixes are removed to form a base address for comparison; a base address is not a verified legal lot, a building count or a development boundary.

Each selected evidence group links its individual City records. The underlying monthly expanders retain their display limits: long lists identify omitted entries, while the headline count still covers the full set. A street cluster establishes neither common ownership nor a shared builder.

What the records cannot establish

The source is Austin’s issued construction-permit dataset. Postal ZIPs are not jurisdiction boundaries. The reports do not combine all permitting authorities, all housing types, completed homes or sales listings.

An issued permit is evidence of an authorization, not a construction start, completion, asking price or sale. Counts come from the records as filed and the existing reconciliation process. A permit number, building record, base address and parcel group are different identifiers.

Monthly figures and dated written reviews

The historical tables and current comparison figures refresh through the monthly data pipeline after its checks pass. Current-activity maps use a separate daily refresh. A failed check retains the previously published report.

Written local findings keep their stated observation date and reporting period, supported by a saved record snapshot. They are not silently relabeled as a new review when fresh numbers arrive. The current tables may therefore cover a later window than the essay. Recheck the City file before relying on the present status of a featured address.

Send us an address and we will tell you what we find

We do this research ourselves on every project we take on — zoning, floodplain, watershed, trees, whether it is a legal lot. Send us an address and we will run it and tell you what we find. It works the same whether you own a vacant lot, a house you are thinking of adding a unit to, or a house you are thinking of replacing. No charge and no strings, and if it is a bad lot we will say so.

Send us an address

We are homebuilders, not the City of Austin. This page explains how we read the code in practice — it is not legal advice and it is not an official determination. Always confirm with Austin Development Services before you rely on it for a project. The authoritative text is the Austin Land Development Code; permitting questions go to Austin Development Services Department.