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Infill Austin Building Permits: Redevelopment ZIPs’ Small-Scale Housing Mix

Last reviewed September 17, 2026 · City of Austin issued permit records · Kimbrough Gray · KiliGray Homes
The 13 ZIPs selected by this report's redevelopment measure recorded 990 housing units and 470 new site groups in the twelve months through August 2026. Their share of located citywide units was 44.4%. Within the group, 78745, 78704, 78721 contributed 47.7% of units.
Applies to: The 13 ZIPs meeting this report's redevelopment-signal rule. Unit tables include one- through four-unit buildings; comparison groups and dates are identified in each section.

Where the infill total comes from

78745 with 216 units, 78704 with 141 units, 78721 with 115 units lead the member ZIPs. Together they account for 472 authorizations. The aggregate is useful for judging the scale of this part of Austin, but a builder assessing competition should compare the member rows rather than assume activity is evenly spread.

Member ZIPUnitsSite groupsShare of member units
787452164221.8%
787041418614.2%
787211152911.6%
787021145611.5%
7875798719.9%
7870374477.5%
7873160376.1%
7875139203.9%
7872231153.1%
7875230133.0%
7874629272.9%
7874122122.2%
7875621152.1%

How infill is defined

The selection uses January 2023–August 2026 records: at least 40 groups with a parcel identifier, and a redevelopment-signal share of at least 40%. The signal is a retained-dwelling pattern in building numbering or a qualifying house demolition on the same parcel since January 2018. It is an analytical grouping, not a City designation or proof that every project is a teardown.

ZIPGroupRedevelopment shareRedevelopment / total lots
78757Infill91%233 / 255
78704Infill85%268 / 315
78731Infill82%103 / 126
78703Infill80%131 / 163
78745Infill80%149 / 187
78756Infill78%53 / 68
78752Infill77%40 / 52
78722Infill76%39 / 51
78702Infill71%178 / 251
78751Infill67%53 / 79
78746Infill62%47 / 76
78741Infill60%41 / 68
78721Infill50%59 / 119
78723Rest of Austin16%38 / 233
78758Rest of Austin5%4 / 83
78724Rest of Austin4%4 / 112
78744Rest of Austin1%9 / 976
78754Rest of Austin1%1 / 115
78617Rest of Austin1%2 / 239
78653Rest of Austin0%1 / 338
78660Rest of Austin0%0 / 59
78747Rest of Austin0%0 / 518

78723, which includes Mueller, falls outside this selection at 16.3% (38 of 233 measured groups). That illustrates the boundary of the measure: it identifies recorded parcel-level redevelopment signals, not every form of urban redevelopment or proximity to downtown.

Infill versus the rest of Austin

Over the selection window, 41.2% of 1,810 member-group lots fall in categories of two or more homes, versus 9.9% of 2,907 lots outside the selected ZIPs, a 31.3-percentage-point gap. These are classified total homes on lots, including retained dwellings, not newly permitted unit counts.

The comparison is descriptive. The selection already uses signals related to existing dwellings, so the two groups are not independent experimental samples. It cannot isolate the effect of zoning, builder choice or market demand. Both sides require a recorded parcel identifier and ZIP. “Rest of Austin” includes every measured group outside the selected ZIPs, including ZIPs too small to qualify for the selection table. The 4-or-more category is not validated for exact size, and its inclusion also limits the combined two-or-more percentage.

Group1-unit2-unit3-unit4 or more (not validated)Total lots2 or more
Infill Austin1,064 (58.8%)509 (28.1%)175 (9.7%)62 (3.4%)1,81041.2%
Rest of Austin2,619 (90.1%)207 (7.1%)23 (0.8%)58 (2.0%)2,9079.9%

Infill Austin, month by month (last 24 months)

Expand a count to see contributing addresses. These member totals retain the broader one- through four-unit building series; the final site-group bucket is not validated for exact size.

MonthUnitsProjectsSingle houses2-unit sites3-unit sites4 or more (not validated)
August 2026 †
50
36
27
5
4
0
July 2026 †
82
44
19
14
9
2
June 2026 †
78
35
18
11
5
1
May 2026 †
92
44
25
15
3
1
April 2026 †
81
25
16
6
2
1
March 2026 †
88
51
30
9
10
2
February 2026
89
43
20
16
7
0
January 2026
93
40
26
9
4
1
December 2025
119
39
19
15
3
2
November 2025
66
37
22
8
6
1
October 2025
75
42
19
14
7
2
September 2025
77
34
11
15
8
0
August 2025
56
31
17
8
6
0
July 2025
89
42
25
10
6
1
June 2025
114
56
25
15
11
5
May 2025
114
60
26
17
13
4
April 2025
96
45
23
10
10
2
March 2025
72
41
18
15
4
4
February 2025
82
40
17
9
11
3
January 2025
46
31
19
7
4
1
December 2024
47
30
15
12
3
0
November 2024
60
41
26
12
2
1
October 2024
69
35
22
10
2
1
September 2024
102
51
26
17
7
1
24-month total †
1,937
973
511
279
147
36

† Still settling: later permits may move recent site groups into larger categories. This can understate the eventual multi-unit share. Units and site groups follow different clocks.

Infill Austin, every month, 1981–present

Historical unit authorizations across the same 13 member ZIPs, including the current partial year.

YearJanFebMarAprMayJunJulAugSepOctNovDecYear total
2026 (YTD)938988819278825026   679
20254682729611411489567775661191,006
20247377744054676040102696047763
20236969708365797411674666751883
202269901407096101959313174109621,130
202175561237510410510112596831041021,149
2020111122455783721099572697965979
2019909411210882821051239083821201,171
201813687788387631141026112358551,047
2017808914188911041087683891521301,231
201610175115941241361338010610356981,221
2015931261201537112414610584129831071,341
20147585619212712189103929966681,078
20135796741139978658595685645931
2012437556669244615086673437711
2011272458323457462943484335476
20103228513427223710028302264475
2009311644341729354023352329356
20087484122587941563160382545713
200759968410165535983117804583925
200651551134966746696110908659915
200532216070831447698105777583924
20044141674548663114365404231660
2003173637312629163630133526332
200228830438242320303726172449
200119761161236774510130
20003211103111330433216165
1999285234353426513627365528442
1998244734372170413032401933428
1997354049594231352942303845475
1996543957534768376949472621567
1995222124303328323520263022323
1994272134323641201311203414303
1993181437302517264441275822359
1992252632411639272623301920324
1991131623212324172528301316249
199011141112141515105416139194
19891510136142119151617125163
1988111113181019442918231220228
1987191513231018181416101010176
198632563974392555151113723389
1985513964637490502827331938576
1984789273123231118148761079297821,317
19831078381759280125718281861181,081
198279791461261421711001486087721221,332
19811041461091271171971731191536381671,456

A dash indicates possible missing ZIP assignments; blank cells are future periods. Full grid legend.

Infill Austin: how many units per lot

The following distribution describes total homes associated with grouped lots in the selected ZIPs. Larger categories are withheld here; † marks provisional periods. Lot grouping and validation limits.

By year

Year1-unit lots2-unit lots3-unit lots1-, 2- and 3-unit lots
2026 †1858849322
202524114389473
202425914432435
202338414410538
202267312011804
20216811307818
2020542954641
20195971285730
20185551007662
20176051493757
20165891407736
201551414530689
20145211078636
2013505858598
20123077310390
2011249384291
2010206323241
2009183301214
20082471037357
20073451065456
20064721334609
200547510225602
20042525714323
20031575310220
2002110642176
20015127179
200092181111
1999258244286
1998321270348
1997317472366
1996272774353
1995233143250
1994238144256
1993290103303
199223342239
199117032175
199013121134
198912160127
198820560211
198713690145
1986243502295
1985303973403
19846462629917
19836281722802
19825462311778
19816842816971

Recent months

Month1-unit lots2-unit lots3-unit lots1-, 2- and 3-unit lots
August 2026 †275436
July 2026 †1914942
June 2026 †1811534
May 2026 †2515343
April 2026 †166224
March 2026 †3091049
February 20262016743
January 2026269439
December 20251915337
November 2025228636
October 20251914740
September 20251115834
August 2025178631
July 20252510641
June 202525151151
May 202526171356
April 202523101043
March 20251815437
February 20251791137
January 2025197430
December 20241512330
November 20242612240
October 20242210234
September 20242617750
24-month total †511279147937

Member ZIPs

78702 · 78703 · 78704 · 78721 · 78722 · 78731 · 78741 · 78745 · 78746 · 78751 · 78752 · 78756 · 78757

Every member is counted whether or not it has a linked detail page. Compare the complete citywide ZIP table for locations beyond this selection.

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.

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