The dimensional standards that govern what you can build in the RR district — straight from Austin's ordinance, with every figure quoting its source. Check a specific address to see how these rules apply to a real lot.
Free · Every figure cited · Read from the current code (2026-07-18)
These are the letter-of-the-law limits for the base RR district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.
How tall the building may be.
“MAXIMUM HEIGHT: 35 35 35 35 35 4 5 35 35 40 40 or 3 stories 40 60 60 90 — 35 or 2 stories 40 or 3 stories 60 40 40 or 3 stories 60 200 350 120 25 or 1 story 11 60 60 12 60 120 60 45 35 15 60 17”§ 25-2-492(D) · Austin code · read 2026-07-18
How many homes the lot may hold.
“MAXIMUM DWELLING UNITS PER LOT: 1 1 3 3 3 4 5 — — 6 7 8 9 9 — — 1 15 — 17”§ 25-2-492(D) · Austin code · read 2026-07-18
Smallest conforming lot.
“MINIMUM LOT SIZE (square feet): 43,560 43,560 10,000 5,750 5,750 4 5 5,750 5,750 8,000 8,000 8,000 8,000 8,000 8,000 — 5,750 5,750 5,750 20,000 5,750 5,750 5,750 — — 43,560 11 5,750 5,750 20,000 43,560 50 acres 5,750 14 10 acres 15 10 ac…”§ 25-2-492(D) · Austin code · read 2026-07-18
Required space from the front line.
“FRONT YARD: 40 40 25 25 25 4 5 25 25 25 25 25 15 15 15 — 25 25 15 50 25 10 10 — — 25 10 10 50 25 — — 75 25 15 100 17”§ 25-2-492(D) · Austin code · read 2026-07-18
Required space from a side line.
“INTERIOR SIDE YARD: 10 10 5 5 5 4 10 5 5 5 5 5 5 5 5 — 5 5 5 20 — — — — — 5 — — 25 13 13 13 14 10 15 100 17”§ 25-2-492(D) · Austin code · read 2026-07-18
Required space from the rear line.
“REAR YARD: 20 20 10 10 10 4 5 10 10 10 10 10 10 10 10 — 5 5 5 20 — — — — — 25 — — 25 13 13 13 14 10 15 100 17”§ 25-2-492(D) · Austin code · read 2026-07-18
Share of the lot the building footprint may cover.
“MAXIMUM BUILDING COVERAGE: — 20% 35% 40% 40% 4 40% 40% 40% 45% 50% 55% 60% 60% 70% — 35% 50% 60% 25% 50% 75% 50% 100% 100% — 95% 95% 85% 50% 75% 75% 40% 12,000 15 — 17”§ 25-2-492(D) · Austin code · read 2026-07-18
Share of the lot that may be hard surface.
“MAXIMUM IMPERVIOUS COVER: 1 25% 40% 45% 45% * 60% 55% 55% 55% 60% 65% 70% 70% 80% — 60% 70% 80% 60% 80% 90% 50% 100% 100% 70% 95% 95% 85% 80% 80% 80% 14 15,000 15 — 17”§ 25-2-492(D) · Austin code · read 2026-07-18
Every figure above is quoted verbatim from the current ordinance. We never substitute a typical-for-zone default: a field absent from the record shows nothing, not a guess.
Informational only — not a permit, appraisal, or professional engineering opinion. Verify with your local planning department before acting on it. See Terms and data sources.
See how these standards resolve on a specific parcel — with the overlays that actually apply, in about 20 seconds.
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