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Yolo County — Development Standards

Development Standards under the Yolo County local zoning and planning code, with the controlling citations.

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Last reviewed: July 6, 2026

Overview

In unincorporated areas of Yolo County, development standards live in the Yolo County Code, Title 8 (Land Use and Development Code), Chapter 2. The County sets detailed, district-specific rules for minimum lot sizes, setbacks, heights, open space, lot coverage, floor area ratio (FAR), and related limits. Most rules are organized in “Table of Development Requirements” by district for agricultural, residential, commercial, industrial, and public/open space zones, with countywide adjustments for front yards and height exceptions. See the Yolo County Zoning and Yolo County Land Use pages for overall structure.

Plain-English anchor: Every project in unincorporated areas must meet its base zone’s building envelope (setbacks, height, FAR/coverage), plus any overlay rules and special standards flagged in that zone’s development table and notes.

How to read Yolo County’s development standards

  • Zone-by-zone development tables: agricultural (§ 8-2.305), residential (§ 8-2.505), commercial (§ 8-2.605), industrial (§ 8-2.705), and public/open space (§ 8-2.805).
  • Countywide modifiers: front yard averaging/cul‑de‑sac frontage (§ 8-2.1003), and height exceptions (§ 8-2.1004).
  • Contextual notes in each table matter (e.g., floodplain and levee restrictions; rural parcels without public services).
  • Overlay districts (e.g., Planned Development PD, Special Building “B,” Airport A‑O) can add or modify standards. See Yolo County Overlay Districts.

Key cross-references you will likely need

District-by-district development standards (unincorporated areas)

Agricultural districts

  • Purpose and typical uses: Agricultural production is a principal use; one primary dwelling is generally allowed, with rules for ancillary dwellings, siting, and buffers from agriculture. See use tables referenced with the ag standards.
  • Where they apply: Working landscapes throughout unincorporated Yolo County.

A‑N Agricultural Intensive

  • Typical allowed uses: Agricultural production; residential limited to one primary dwelling (duplex allowed) plus one ancillary dwelling, subject to the table.
  • Dimensional standards:
    • Minimum lot area: 40 ac (permanent crops), 80 ac (irrigated/cultivated), 160 ac (uncultivated/not irrigated).
    • Setbacks: Front 20 ft from property line or 50 ft from roadway centerline (whichever greater); Rear 25 ft; Sides 20 ft. Notes require a 30 ft front setback on arterials; larger ag buffers can apply.
    • Height: 40 ft for residential; unrestricted for agricultural uses unless otherwise conditioned.
    • Building separation: Max 250 ft between dwellings; 10 ft min between dwellings and ag structures (or per fire/building codes).
  • Special siting rules: Agricultural home siting criteria set front/rear/side setbacks and clustering; may increase to 100 ft where needed for spraying; flood control levee 50 ft setback; stream setbacks 100 ft; Director may approve exceptions under listed circumstances.

Note: The development table also references levee/floodplain and accessory-structure rules; verify parcel-specific buffers and any overlays.

Other agricultural districts

  • A‑X, A‑C, A‑I, A‑R: Not found in retrieved materials for full development tables. Wind energy height/setback rules list these zones, indicating they exist; confirm each district’s own development table before designing.
  • Not found in retrieved materials.

Residential districts

  • Where they apply: Unincorporated towns and rural neighborhoods subject to County zoning.
  • Accessory structures and ADUs: See § 8-2.506 for accessory structures and ADUs; encroachments and separations have specific measurements.

RR‑5 Rural Residential 5 ac; RR‑2 Rural Residential 2 ac

  • Typical uses: Single-family homes and rural residential uses; limited accessory structures; some home occupations and small child care uses as allowed.
  • Dimensional highlights (per Table 8‑2.505):
    • Minimum lot area: RR‑5 = 5.0 ac; RR‑2 = 2.0 ac.
    • Setbacks: Table indicates rural front yard format; see arterial road note (30 ft from edge of ROW on arterials).
    • Height: 35 ft for residential in RR zones (per table excerpt). Verify on project.
  • Note: Parcels without public water/wastewater face a 2.0 ac minimum for new permits countywide; the Special Building “B” overlay can impose a 2‑ac minimum for creating new lots. See § 8‑2.1002(a) and § 8‑2.906(b).

R‑L Residential Low

  • Typical uses: Single-family and small multifamily; group/co‑housing by Site Plan Review if standards met.
  • Dimensional standards (Table 8‑2.505):
    • Minimum lot area: 1,200 sf (2.0 ac minimum if no services).
    • Setbacks: Front 10 ft or curb strip (20 ft for garages); Rear 20 ft; Side 5 ft (less with Use Permit).
    • Height/open space/density: 35 ft/2 stories (40 ft/3 with Use Permit); 600 sf open space per unit; 1.0–9.9 du/net ac.

R‑M Residential Medium

  • Typical uses: Multifamily; group/co‑housing with Site Plan Review if standards met.
  • Dimensional standards (Table 8‑2.505):
    • Minimum lot area: 1,200 sf.
    • Setbacks: Front 10 ft or curb strip (20 ft for garages); Rear 15 ft; Side 5 ft (less with Use Permit).
    • Height/open space/density: 40 ft/3 stories (50 ft/4 with Use Permit); 300 sf open space per unit; 10.0–19.9 du/net ac.

R‑H Residential High

  • Typical uses: Higher-density multifamily; four‑plexes allowed if minimum 20 du/ac is met.
  • Dimensional standards (Table 8‑2.505):
    • Minimum lot area: 1,500 sf.
    • Setbacks: Front 10 ft; Side 10 ft (less with Use Permit).
    • Height/open space/density: 50 ft/4 stories (60 ft/5 with Use Permit); 200 sf open space per unit; 20.0+ du/net ac.

Notes for R zones:

  • Front yard on County roads is the “front”; arterials require 30 ft from edge of ROW. Floodplain findings may apply; levee toe setbacks restrict development. Stream setbacks of 100 ft apply to residential and accessory structures unless infeasible.

Commercial districts

  • Where they apply: Unincorporated towns/centers; development tables control parcel area, setbacks, height, FAR, coverage.

C‑L Local Commercial; C‑G General Commercial; C‑H Highway Commercial; DMX Downtown Mixed Use (Esparto)

  • Dimensional standards (Table 8‑2.605):
    • C‑L: Min lot 3,500 sf; Front none; Rear none (15 ft if abutting residential); Height 35 ft; FAR 0.5 (1.0 for mixed commercial/residential); 85% max impervious coverage.
    • C‑G: Min lot 5,000 sf; Height max 50 ft or 4 stories; FAR 1.0 (2.0 for mixed commercial/residential); 90% impervious coverage.
    • C‑H: Min lot 10,000 sf; Front 15 ft; Side/Rear may increase when abutting residential; Height 40 ft; FAR 1.0; 90% coverage.
    • DMX (Esparto): Min lot 3,500 sf; Building pulled to property line with a maximum 10 ft front/street-side setback on Yolo Ave/Woodland Ave/CR‑87; Min height 22 ft along Yolo/ Woodland; Max height 50 ft/4 stories; additional use-mix and ground‑floor retail requirements.
  • DMX design/performance standards apply in addition to the table; see § 8‑2.606(a) and consider Yolo County Design Review.

Industrial districts

  • Where they apply: Industrially zoned lands in the unincorporated area.
  • Dimensional standards (Table 8‑2.705):
    • I‑L Light Industrial: Min lot 5,000 sf; Front none; Rear none (25 ft if abutting residential); Height max 45 ft or 4 stories; FAR 0.5; 90% coverage.
    • I‑H Heavy Industrial: Min lot 5,000 sf; Rear none (50 ft if abutting residential). Other metrics not found in retrieved materials.
    • OPRD Office Park/Research & Development: Min lot 1.5 ac; Front 10 ft or as per approved PD; Rear 10–20 ft; Sides 0–20 ft (when abutting residential); Height max 65 ft or 5 stories; FAR 1.0; 75% coverage.

Public and Open Space districts

  • P‑R Parks and Recreation; POS Permanent Open Space; PQP Public/Quasi‑Public (Table 8‑2.805):
    • P‑R: No min lot; Front none; Height 35 ft; FAR 0.025.
    • POS: Height 35 ft; FAR 0.001. (Setbacks not listed in retrieved excerpt.)
    • PQP: Front 5 ft or match prevailing setback; Rear 10–20 ft; Side 0–10 ft; Height max 50 ft/4 stories; FAR 0.5.

Overlay districts and countywide modifiers

  • PD Planned Development overlay: A PD ordinance sets custom standards (density, setbacks, height, parking, signs) and can deviate from base-zone rules if the total plan is improved; requires detailed submittals and governs subsequent structures.
  • Special Building “B” overlay: Applies in areas with private wells/septic; imposes a 2‑acre minimum parcel size to create new lots and for building permits on new lots; shown as “B87” overlay. Existing substandard lots are not subject to the 2‑acre minimum for building a house.
  • Airport Overlay (A‑O): Height is controlled by airport CLUPs and State PUC § 21659; check for additional aviation safety‑zone limits.
  • Front yard adjustments: Residential front yard averaging and cul‑de‑sac reduction rules apply (§ 8‑2.1003).
  • Height exceptions: Certain structures may exceed base height; ag zones have no height limit for ag uses (residential/wind systems excepted). Use permits can allow further increases (§ 8‑2.1004).
  • Wind energy systems: Height limits and minimum setbacks equal to system height vary by zone; airports add FAA constraints (§ 8‑2.1103).
  • Floodplain/levee constraints: Projects in floodplains need findings; toe‑of‑levee setbacks and restrictions apply (§ 8‑2.306(ad), § 8‑2.306(ae)).
  • Rural parcels without services: New permits may require a 2.0‑acre minimum parcel size (§ 8‑2.1002(a)).
  • Density bonus: The County may reduce setbacks, increase height/coverage, or modify other site standards as incentives under its density bonus program (§ 8‑12.107).

Quick-reference standards table (selected districts)

District Min Lot Front/Side/Rear Setbacks Height FAR/Coverage Notes Code Reference
R‑L 1,200 sf (2.0 ac if no services) 10 ft front (20 ft garage); 5 ft sides; 20 ft rear 35 ft/2 stories (40 ft/3 w/UP) Open space 600 sf/unit 1.0–9.9 du/ac § 8‑2.505
R‑M 1,200 sf 10 ft front (20 ft garage); 5 ft sides; 15 ft rear 40 ft/3 stories (50 ft/4 w/UP) Open space 300 sf/unit 10.0–19.9 du/ac § 8‑2.505
R‑H 1,500 sf 10 ft front; 10 ft sides 50 ft/4 stories (60 ft/5 w/UP) Open space 200 sf/unit 20.0+ du/ac § 8‑2.505
C‑L 3,500 sf None; sides/rear 15 ft if abutting R 35 ft FAR 0.5 (1.0 mixed-use); 85% cov. — § 8‑2.605
C‑G 5,000 sf See table 50 ft or 4 stories FAR 1.0 (2.0 mixed-use); 90% cov. — § 8‑2.605
DMX (Esparto) 3,500 sf Max 10 ft to property line along main streets; rear 10–20 ft; no interior side unless abutting R 50 ft/4 stories (min 22 ft on Yolo/Woodland) — Ground-floor retail frontage rules § 8‑2.605, § 8‑2.606(a)
C‑H 10,000 sf 15 ft front; res. buffers increase sides/rear 40 ft FAR 1.0; 90% cov. — § 8‑2.605
I‑L 5,000 sf None front; rear none (25 ft if abutting R) 45 ft or 4 stories FAR 0.5; 90% cov. — § 8‑2.705
OPRD 1.5 ac 10 ft front or per PD; rear 10–20 ft; sides 0–20 ft 65 ft or 5 stories FAR 1.0; 75% cov. PD may govern § 8‑2.705
P‑R — None front; rear 15 ft if abutting R 35 ft FAR 0.025 — § 8‑2.805
PQP — 5 ft front or match prevailing 50 ft or 4 stories FAR 0.5 Side/rear step-ups near R § 8‑2.805
A‑N 40/80/160 ac (crop/irrig./uncult.) Front 20 ft or 50 ft to road centerline; sides 20 ft; rear 25 ft 40 ft (res.); no limit (ag) — 100 ft ag spray/stream buffers; levee 50 ft § 8‑2.305; § 8‑2.402(d)

Checklist

  • Confirm base zoning and any overlays on the parcel (PD, “B,” A‑O, floodplain) in unincorporated areas.
  • Apply your zone’s development table for lot area, setbacks, height, FAR/coverage, and open space.
  • If on a County road/arterial, check front-yard and arterial setback notes; consider front-yard averaging or cul‑de‑sac rules where applicable.
  • If in DMX (Esparto), meet the 0–10 ft “build-to” line and ground-floor retail frontage standards; consider design review.
  • Check parking, landscaping/screening, and signage standards referenced by your zone or PD.
  • If no public water/sewer, verify the 2.0‑acre minimum for new permits and any “B87” overlay.
  • If near a levee or in floodplain, apply § 8‑2.306 restrictions and FEMA‑based height measurement note.
  • For ADUs/accessory structures, apply § 8‑2.506 and state ADU rules; see California ADU law.
  • If pursuing a Density Bonus, coordinate early—setbacks/height/coverage can be modified as incentives (§ 8‑12.107).

Risks & Ambiguities

Issue Why it matters What to verify
Arterial vs. local road setbacks RR/R zones refer to County roads and arterials with different front-yard rules Confirm road classification and right-of-way; apply Table 8‑2.505 notes and § 8‑2.1003 where applicable.
Floodplain/levee proximity Extra findings and levee toe setbacks can limit siting/height measurement Check § 8‑2.306(ad)/(ae) notes in your district table; ask staff for the latest flood maps.
DMX “build-to” line A max 10 ft setback governs main streets in Esparto DMX Map frontage on Yolo/Woodland/CR‑87; confirm encroachment permits for awnings/balconies (§ 8‑2.606(a)).
Airports/CLUPs A‑O overlay may cap heights below zone maxima Check A‑O mapping and PUC § 21659 references; coordinate with airport land use authority.
Services availability No public water/sewer can trigger 2.0‑acre minimums and Special “B” overlay Confirm utilities; confirm if “B87” overlay applies; see § 8‑2.1002(a) and § 8‑2.906(b).
Agricultural interfaces Larger buffers (100 ft+) may be needed for spraying near homes Apply agricultural home siting criteria (§ 8‑2.402(d)) during layout.
I‑H metrics incomplete Some I‑H table cells not shown in retrieved excerpts Not found in retrieved materials; request the complete § 8‑2.705 table from County.
ADU/local setback conflicts State ADU law can override some local envelopes Apply § 8‑2.506 plus state minimums; coordinate with Planning early.

Plain-English Summary

If you’re building in the unincorporated areas, start with your base zone’s development table for lot size, setbacks, and height, then layer on any overlay requirements and table notes about roads, floodplains, levees, and utilities. Commercial DMX in Esparto pulls buildings up to the street; rural zones often need bigger front yards near arterials; and agricultural areas have added buffers and siting rules. When in doubt, verify overlays, parking, and any design review triggers before designing.

Source References

Sources

Retrieved passages

  • Yolo County Zoning Code (Section 8-2.1002) High relevance
  • Yolo County Zoning Code High relevance
  • CFC § 500 (section if) High relevance
  • CFC § 2 (Section 8-2.306) High relevance
  • Yolo County Zoning Code (Article 11) High relevance
  • Yolo County Zoning Code (Section 8-2.606) High relevance
  • Yolo County Zoning Code High relevance
  • Yolo County Zoning Code High relevance
  • Yolo County Zoning Code (Section 8-2.506) High relevance
  • Yolo County Zoning Code High relevance
  • Yolo County Zoning Code (Article 11.) High relevance
  • Yolo County Zoning Code (Article 14) High relevance
  • Yolo County Zoning Code (Section 8-2.1002) High relevance
  • CBC § 8 (Article 10) High relevance
  • Yolo County Zoning Code (Section 8-2.1002) High relevance

Cited sections

Frequently asked questions

What can I build on an A‑N agricultural parcel in unincorporated Yolo County?

Agricultural production is primary. One primary dwelling (duplex allowed) plus one ancillary dwelling may be permitted; apply the A‑N development table for setbacks and height. Agricultural uses are generally not height‑limited; residential is limited to 40 ft. Siting criteria add buffers (e.g., 100 ft near spraying) and levee/stream setbacks (§ 8‑2.305; § 8‑2.402(d)).

What are the basic residential setbacks in the R‑L and R‑M districts?

R‑L: 10 ft front (20 ft for garages), 5 ft sides, 20 ft rear. R‑M: 10 ft front (20 ft for garages), 5 ft sides, 15 ft rear. Each has height/open space requirements and density ranges; side yards can be reduced with a Use Permit (§ 8‑2.505).

How close to the street can I build in the DMX (Esparto) district?

New/renovated façades along Yolo Ave, Woodland Ave, and CR‑87 must generally abut the front and street‑side property lines or be within 10 ft. Min heights of 22 ft apply along Yolo/Woodland, with a max of 50 ft/4 stories (§ 8‑2.606(a); § 8‑2.605).

Do arterials change my front setback in unincorporated residential zones?

Yes. The yard abutting a County road is the front, and properties on a major arterial require a 30 ft front setback from the edge of right‑of‑way (see notes to Table 8‑2.505). Front yard averaging and cul‑de‑sac frontage adjustments may also apply (§ 8‑2.1003).

What are the industrial development standards?

I‑L requires a 5,000 sf minimum lot, no front setback, 45 ft or 4‑story height cap, FAR 0.5, and 90% max coverage; rear setback increases if next to residential. OPRD has a 1.5 ac minimum, 65 ft/5‑story height cap, FAR 1.0; setbacks can be per an approved PD. The I‑H row in the retrieved table is incomplete—verify with the County (§ 8‑2.705).

Does lack of public water/sewer change what I can build?

Often. Several tables note parcels without public services may require a 2.0‑acre minimum for new permits, and the Special Building “B87” overlay imposes a 2‑acre minimum for creating new lots in designated areas (§ 8‑2.1002(a); § 8‑2.906(b)).

Are there countywide height exceptions?

Yes. Certain features (e.g., chimneys, towers) may extend up to 30 ft above the zone limits; agricultural zones generally have no height limit for agricultural uses. The Planning Commission can approve further increases by Use Permit (§ 8‑2.1004).

How do floodplains and levees affect my building envelope?

Projects in floodplains require specific findings, and levee “toe” setbacks restrict permanent improvements near levees. Some tables also switch height measurement in flood zones to a base flood elevation reference; see table notes referencing § 8‑2.306(ad)/(ae).

Can a density bonus change setbacks or height?

Yes. Under the County’s density bonus program, incentives can include reduced setbacks, increased height/coverage, and other standard modifications, subject to qualifying affordable housing (§ 8‑12.107).

Where do accessory structures and ADUs fit in?

Accessory structures have their own separation and yard encroachment rules in § 8‑2.506; ADUs must meet state‑mandated minimums even if local zoning is stricter. Coordinate with Planning and check California ADU law.

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