Salt Lake County ADU rules by city
20 Salt Lake County cities are covered. In 15 of them, detached backyard ADUs are generally allowed today. Each city sets its own lot size, parking and owner-occupancy rules, so check the city page before you design.
| City | County | Internal ADU | Detached ADU | Owner occupancy | S.B. 284 city | Checked |
|---|---|---|---|---|---|---|
| Salt Lake City | Salt Lake | allowedno city lot minimum on file | allowedno city lot minimum on file | Required | Yes | 2026-09-07 (not fully verified) |
| West Valley City | Salt Lake | allowedno city lot minimum on file | allowedlot 11,000 sq ft+ | Required | Yes | 2026-09-07 (not fully verified) |
| West Jordan | Salt Lake | allowedno city lot minimum on file | allowedlot 10,000 sq ft+ | Required | Yes | ✓ 2026-09-24 |
| Sandy | Salt Lake | allowedno city lot minimum on file | not generally allowedlot 11,000 sq ft+ | Required | Yes | 2026-09-07 (not fully verified) |
| South Jordan | Salt Lake | allowedlot 6,000 sq ft+ | allowedlot 6,000 sq ft+ | Required | Yes | ✓ 2026-09-24 |
| Millcreek | Salt Lake | allowedno city lot minimum on file | allowedlot 8,000 sq ft+ | Required | Yes | 2026-09-07 (not fully verified) |
| Herriman | Salt Lake | allowedno city lot minimum on file | allowedlot 10,000 sq ft+ | Required | Yes | ✓ 2026-09-24 |
| Taylorsville | Salt Lake | allowedno city lot minimum on file | allowed with conditionslot 11,000 sq ft+ | See city page | Yes | 2026-09-07 (not fully verified) |
| Draper | Salt Lake | allowedlot 6,000 sq ft+ | allowedlot 12,000 sq ft+ | Required | Yes | 2026-09-07 (not fully verified) |
| Murray | Salt Lake | allowedno city lot minimum on file | allowedlot 10,000 sq ft+ | Required | Yes | 2026-09-07 (not fully verified) |
| Riverton | Salt Lake | allowedno city lot minimum on file | allowedno city lot minimum on file | Required | Yes | ✓ 2026-09-24 |
| Kearns | Salt Lake | allowedlot 5,000 sq ft+ | allowedlot 5,000 sq ft+ | Required | Yes | ✓ 2026-09-24 |
| Midvale | Salt Lake | allowedlot 6,001 sq ft+ | allowedlot 6,001 sq ft+ | Required | Yes | ✓ 2026-09-24 |
| Cottonwood Heights | Salt Lake | allowedlot 6,001 sq ft+ | allowed with conditionsno city lot minimum on file | Required | Yes | ✓ 2026-09-24 |
| Magna | Salt Lake | allowedlot 6,000 sq ft+ | allowedlot 8,000 sq ft+ | Required | Yes | ✓ 2026-09-24 |
| Holladay | Salt Lake | allowedno city lot minimum on file | allowedno city lot minimum on file | Required | Yes | ✓ 2026-09-24 |
| South Salt Lake | Salt Lake | allowedlot 6,000 sq ft+ | allowedlot 6,000 sq ft+ | Required | Yes | 2026-09-07 (not fully verified) |
| Bluffdale | Salt Lake | allowedlot 6,000 sq ft+ | allowedlot 11,000 sq ft+ | See city page | Yes | 2026-09-07 (not fully verified) |
| White City | Salt Lake | allowedno city lot minimum on file | allowed with conditionslot 11,000 sq ft+ | — | Yes | 2026-09-07 (not fully verified) |
| Emigration Canyon | Salt Lake | allowed with conditionsno city lot minimum on file | allowed only in limited casesno city lot minimum on file | — | No / unconfirmed | 2026-09-07 (not fully verified) |
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Unincorporated Salt Lake County land follows county zoning, which this table does not cover. Planning information, not legal advice or a permit.