Maximum height
35 ftHow tall the building may be.
“R3 4,300 sq. ft. 15 ft. 20 ft. 35 ft. 21,780 sq. ft. 120 ft.”TABLE 5.17-3: MULTIPLE-FAMILY RESIDENTIAL DISTRICTS › HEIGHT › R3 row · Ann Arbor code · read 2026-10-02
Ann Arbor, MI · zoning record
R3 zoning in Ann Arbor.
The dimensional standards that govern what you can build in the R3 district, straight from Ann Arbor'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 (2026-10-02)
R3 dimensional standards.
These are the letter-of-the-law limits for the base R3 district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.
Minimum lot size
21,780 sfSmallest conforming lot.
“R3 15 ft. 20 ft. plus 35 ft. 21,780 sq. ft. 120 ft.”TABLE 5.17-3: MULTIPLE-FAMILY RESIDENTIAL DISTRICTS › MIN. AREA › R3 row · Ann Arbor code · read 2026-10-02
Minimum lot width
120 ftNarrowest conforming lot.
“R3 15 ft. 20 ft. plus 35 ft. 21,780 sq. ft. 120 ft.”TABLE 5.17-3: MULTIPLE-FAMILY RESIDENTIAL DISTRICTS › WIDTH › R3 row · Ann Arbor code · read 2026-10-02
Front setback
15 ftRequired space from the front line.
“R3 15 ft. 20 ft. plus 35 ft. 21,780 sq. ft. 120 ft.”TABLE 5.17-3: MULTIPLE-FAMILY RESIDENTIAL DISTRICTS › FRONT › R3 row · Ann Arbor code · read 2026-10-02
Sources
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.
- TABLE 5.17-3: MULTIPLE-FAMILY RESIDENTIAL DISTRICTS · Ann Arbor, MI code of ordinances (read 2026-10-02)
- TABLE 5.17-3: MULTIPLE-FAMILY RESIDENTIAL DISTRICTS · Ann Arbor, MI code of ordinances (read 2026-10-02)
Check a real Ann Arbor lot against R3.
See how these standards resolve on a specific parcel, with the overlays that actually apply, in about 20 seconds.
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