Sonoma County · Zoning setbacks
Unincorporated Sonoma County setback requirements
Lekua resolves a parcel’s jurisdiction and zone, then draws this envelope on the site plan with its citation in the title block. Enter a Unincorporated Sonoma County address and the setbacks arrive already drawn.
The envelope
What the numbers below make on the ground. Shown for the first district in the table; the rest follow the same geometry at their own dimensions.
Zone RR — the envelope Lekua draws on the plan.
- Front
- 20′
- Side
- 5′
- Rear
- 20′
The hatched band is the yard — ground the code gives up. Drawn not to scale: the yards are proportional to each other, so the deepest one fills the band and the rest follow. The dimensions carry the real numbers, and the export draws them on the actual parcel outline.
Unincorporated Sonoma County setbacks by district
Every row is produced by the same function the exporter calls, so this page cannot drift from what the drawing gets. The citation under each row is what prints on the sheet.
Corner lots: 20′ on the secondary street frontage.
Sonoma County Code Table 8-2 (RR Rural Residential): front 20, interior side 5, street side 20, rear 20. Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
Corner lots: 30′ on the secondary street frontage.
Sonoma County Code Table 8-2 (AR Agriculture & Residential): front 30, interior side 10, street side 30, rear 20. Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
Corner lots: 30′ on the secondary street frontage.
Sonoma County Code Table 6-2 (RRD Resources & Rural Development): front 30, interior side 10, street side 30, rear 20. Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
Corner lots: 30′ on the secondary street frontage.
Sonoma County Code Table 6-2 (LIA Land Intensive Agriculture): front 30, interior side 10, street side 30, rear 20. Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
Corner lots: 30′ on the secondary street frontage.
Sonoma County Code Table 6-2 (LEA Land Extensive Agriculture): front 30, interior side 10, street side 30, rear 20. Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
Corner lots: 30′ on the secondary street frontage.
Sonoma County Code Table 6-2 (DA Diverse Agriculture): front 30, interior side 10, street side 30, rear 20. Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
Corner lots: 20′ on the secondary street frontage.
Sonoma County Code §26-06-040.G.1 (TP Timber Production): front 10% of depth (max 75 ft), street/interior side 10% of width (max 20 ft), rear 20 (lot geometry unknown — 75/20 caps drawn (conservative)). Front may reduce to the improved-block average (10 ft min) where >=25% of the block is built (§26-16-060.E); a street-facing garage face needs 20 ft (§26-16-060.C). Combining districts (SR scenic, RC riparian, F1/F2 flood, VOH valley-oak, BR biotic, Z, B) may modify. Planned developments/condominiums take setbacks from the adopted plan, not this table (§26-08-040.L). Sonoma County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025), print 2026-07-24. Verify with Permit Sonoma.
What the export says about this table
Unincorporated Sonoma County reviewed against County Code Ch. 26 Tables 6-2/8-2 (Ord. 6532/2025): RRD, LIA, LEA, DA, AR, RR, R1, R2, R3 and TP. Covers unincorporated areas only — the nine incorporated cities are not covered. Combining districts (SR/RC/F1/F2/VOH/BR), planned and condominium districts, and the Coastal LCP are not captured.
Printed verbatim on every Unincorporated Sonoma County export — the same words the reviewer signed off, not a summary of them.
Setbacks are one layer of a Unincorporated Sonoma County site plan
The same address search returns the parcel boundary, 1–2 ft contours, building footprints, CAL FIRE defensible-space zones, the soil profile, four-season sun, and a native plant palette matched to the site. See everything Lekua resolves in Sonoma County→
Unincorporated Sonoma County setback FAQ
What are the residential setbacks in Unincorporated Sonoma County?
In RR the code sets a 20 ft front yard, 5 ft sides, and a 20 ft rear yard. The full table is below, transcribed from Sonoma County Code Table 8-2 with the citation attached to every row. This table has passed independent review, so Lekua draws the setback envelope on the site plan for a Unincorporated Sonoma County parcel.
Does Lekua draw the setback envelope for Unincorporated Sonoma County?
Yes. Unincorporated Sonoma County is one of the jurisdictions whose table has passed review, most recently on 2026-07-24, so the envelope is drawn on the DXF and the PDF site plan with its citation in the title block.
Where do these Unincorporated Sonoma County setback numbers come from?
They are transcribed from the adopted code — Sonoma County Code Table 8-2 — and this page renders them by calling the same function the exporter calls, so what you see here is what the drawing gets. Zoning changes; verify against the current code and with the planning department before submittal.
Can I get a CAD base map for a Unincorporated Sonoma County parcel?
Yes. Enter any Unincorporated Sonoma County address and Lekua returns a layered DXF base plan and a PDF site report — property lines, 1–2 ft contours, building footprints, CAL FIRE defensible-space zones, soil, seasonal sun, and a native plant palette matched to the parcel, alongside the zoning determination. See what else resolves in Sonoma County.
Start with a Unincorporated Sonoma County address
Free to search. The zone resolves from the parcel, not from the mailing address.