Summary
- Location
- Riverside County, California, USA
- County-level accepted plans
- 4 accepted plans
- Providers
- 1 provider
- Origin programs
- 1 program
- Plan size range
- 499 to 909 sq ft
- Permit sources
- 36 sources
County context
Riverside County Pre-Approved ADU Plans
Browse official city and county pre-approved ADU plan programs in Riverside County, California.
Program Overview
This Riverside County page summarizes source-backed county context for Riverside County, California. The current public dataset lists 28 city program pages in this county and 4 county-level accepted-plan records. County-level plan sources include Riverside County TLMA Building & Safety Department, Riverside County, Riverside County / Design Path Studio, and others. Provider names include Design Path Studio.
County records may apply only in unincorporated areas or county-administered jurisdictions, so verify the official source before relying on a plan for an incorporated city. County fee and permit data includes 30 fee records and 48 permit requirement records. Missing source fields remain Not listed in source, and directory records do not guarantee permit approval.
Included Locations
City
Banning, Riverside County, California, USA
0 accepted plans
City
Beaumont, Riverside County, California, USA
2 accepted plans
City
Blythe, Riverside County, California, USA
0 accepted plans
City
Calimesa, Riverside County, California, USA
0 accepted plans
City
Canyon Lake, Riverside County, California, USA
0 accepted plans
City
Cathedral City, Riverside County, California, USA
4 accepted plans
City
Coachella, Riverside County, California, USA
0 accepted plans
City
Corona, Riverside County, California, USA
0 accepted plans
City
Desert Hot Springs, Riverside County, California, USA
0 accepted plans
City
Eastvale, Riverside County, California, USA
0 accepted plans
City
Hemet, Riverside County, California, USA
0 accepted plans
City
Indian Wells, Riverside County, California, USA
0 accepted plans
City
Indio, Riverside County, California, USA
0 accepted plans
City
Jurupa Valley, Riverside County, California, USA
8 accepted plans
City
La Quinta, Riverside County, California, USA
0 accepted plans
City
Lake Elsinore, Riverside County, California, USA
3 accepted plans
City
Menifee, Riverside County, California, USA
8 accepted plans
City
Moreno Valley, Riverside County, California, USA
7 accepted plans
City
Murrieta, Riverside County, California, USA
0 accepted plans
City
Norco, Riverside County, California, USA
0 accepted plans
City
Palm Desert, Riverside County, California, USA
0 accepted plans
City
Palm Springs, Riverside County, California, USA
0 accepted plans
City
Perris, Riverside County, California, USA
4 accepted plans
City
Rancho Mirage, Riverside County, California, USA
0 accepted plans
City
Riverside, Riverside County, California, USA
4 accepted plans
City
San Jacinto, Riverside County, California, USA
0 accepted plans
City
Temecula, Riverside County, California, USA
5 accepted plans
City
Wildomar, Riverside County, California, USA
0 accepted plans
County-Level Accepted Plans
4 plans Source-backed record Government PDF
- Provider
- Design Path Studio
- Origin program
- Riverside County, California, USA
- Accepted location
- Riverside County, California, USA
- Size
- 499 sq ft
- Bedrooms
- Studio
- Bathrooms
- 1 bath
- Last checked
- May 4, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
Source-backed record Government PDF
- Provider
- Design Path Studio
- Origin program
- Riverside County, California, USA
- Accepted location
- Riverside County, California, USA
- Size
- 625 sq ft
- Bedrooms
- 1 bed
- Bathrooms
- 1 bath
- Last checked
- May 4, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
Source-backed record Government PDF
- Provider
- Design Path Studio
- Origin program
- Riverside County, California, USA
- Accepted location
- Riverside County, California, USA
- Size
- 749 sq ft
- Bedrooms
- 2 beds
- Bathrooms
- 1 bath
- Last checked
- May 4, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
Source-backed record Government PDF
- Provider
- Design Path Studio
- Origin program
- Riverside County, California, USA
- Accepted location
- Riverside County, California, USA
- Size
- 909 sq ft
- Bedrooms
- 2 beds
- Bathrooms
- 2 baths
- Last checked
- May 4, 2026
Verify current acceptance, site limits, and permit requirements with the local building department.
Permit Requirements
48 requirementsAll
Eligible Zoning
R-1, R-2, R-2A, R-A, R-R, R-1A, R-3, R-3A, R-4, R-6, R-7, R-D, A-1, A-2, A-P, W-2, W-2-M, N-A
- Last checked
- May 4, 2026
- Notes
- Single-family residential zoning required; property must be developed or proposed to be developed with a single-family dwelling.
All
Flood Hazard Area Restriction
If located within Floodplain, plans must be pre-approved by County of Riverside Flood Control
- Last checked
- May 4, 2026
- Notes
- Contact rcflood.org or call 951-955-1200.
All
Environmental Constraint Area Restriction
Project site cannot be located within Environmental Constraint Area per recorded map or approved ERP/HANS exhibit
- Last checked
- May 4, 2026
- Notes
- Verify via Map My County or contact Environmental Programs - Planning Dept.
Detached
Maximum Detached ADU Size
1,000 sf
- Last checked
- May 4, 2026
- Notes
- Per Riverside County ARA standards.
Attached
Maximum Attached ADU Size
50% of primary dwelling floor area or 800 sf, whichever is greater, not to exceed 1,000 sf
- Last checked
- May 4, 2026
- Notes
- Not listed in source
Junior ADU
JADU Maximum Size
500 sf
- Last checked
- May 4, 2026
- Notes
- Not listed in source
All
Setbacks
4 feet from side and rear; front yard per zoning
- Last checked
- May 4, 2026
- Notes
- Not listed in source
All
Hold Harmless Agreement
Required for use of permit-ready/pre-approved plans
- Last checked
- May 4, 2026
- Notes
- Not listed in source
Unincorporated county
County application review
County permit-ready drawings still require parcel-specific planning, building, utility, fire, and site review.
- Source
- Permit Ready ADU Program
- Last checked
- Aug 11, 2026
- Notes
- Not listed in source
All
County territorial applicability
Riverside County Building service territory
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- No incorporated-city acceptance is inferred.
All
Site constraints
Flood, environmental, and site review may apply
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- Permit-ready status does not approve the parcel.
All
County territorial applicability
Riverside County Building service territory
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- No incorporated-city acceptance is inferred.
All
Site constraints
Flood, environmental, and site review may apply
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- Permit-ready status does not approve the parcel.
All
County territorial applicability
Riverside County Building service territory
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- No incorporated-city acceptance is inferred.
All
Site constraints
Flood, environmental, and site review may apply
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- Permit-ready status does not approve the parcel.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Unincorporated county
County geographic and site review
County program conditions apply
- Last checked
- Aug 13, 2026
- Notes
- County plan availability is not proof of acceptance inside the incorporated target city; site-specific review remains.
Site specific
Eligibility and supporting documents
Site plan, cover sheet, hold-harmless agreement, and hazard review
- Last checked
- Aug 13, 2026
- Notes
- Flood and environmental constraints may require additional clearance.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Use of a county plan in eligible county territory
Site-specific permit review
Required
- Last checked
- Aug 17, 2026
- Notes
- County catalog applicability does not establish eligibility for every parcel or acceptance by an incorporated city.
Fees
30 fee recordsAll
Permit Ready ADU (BRS-PRADU) Permit Deposit
$4,348.86
- Last checked
- May 4, 2026
- Notes
- Riverside County Building & Safety official fee schedule - deposit fee.
All
Standard ADU (BRS-ADU) Permit Deposit
$6,691.95
- Last checked
- May 4, 2026
- Notes
- Standard non-pre-approved ADU permit deposit; for comparison.
Junior ADU
Junior ADU (BAR-JADU) Permit Deposit
$2,111.65
- Last checked
- May 4, 2026
- Notes
- Not listed in source
All
PRADU Plan PDF Cost
Free
- Last checked
- May 4, 2026
- Notes
- Per County: 'Permit Ready ADUs (BRS-PRADU) are free standard plans available to the public, though submission, construction, and site-specific details will incur costs.'
Unincorporated county
BRS-PRADU deposit
$6,472.45 deposit; final cost is calculated at application and surcharges may apply
- Source
- Building and Safety Fees
- Last checked
- Aug 11, 2026
- Notes
- Cents are preserved in amount_text; integer amount fields are intentionally NULL.
All
Permit-ready plan cost
$0
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- The county states the four base designs are free.
All
Permit-ready plan cost
$0
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- The county states the four base designs are free.
All
Permit-ready plan cost
$0
- Source
- Permit-Ready ADU
- Last checked
- Aug 13, 2026
- Notes
- The county states the four base designs are free.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
County catalog plans
Published county plan cost
$0 / free plan
- Last checked
- Aug 13, 2026
- Notes
- Ordinary permit and site-specific costs remain separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Listed county plan models
Published plan-set cost
$0 / no-cost plan set
- Last checked
- Aug 17, 2026
- Notes
- Plan cost only; other project and permitting costs are separate.
Official Sources
36 sourcesBuilding and Safety Fee Schedules - Riverside County TLMA
- Publisher
- Riverside County TLMA Building & Safety Department
- Last checked
- May 4, 2026
Building and Safety Fees
- Publisher
- Riverside County
- Last checked
- Aug 11, 2026
PRADU Plan 1 - 499 sf Studio (V2)
- Publisher
- Riverside County / Design Path Studio
- Last checked
- May 4, 2026
PRADU Plan 2 - 625 sf 1BR/1BA (V2)
- Publisher
- Riverside County / Design Path Studio
- Last checked
- May 4, 2026
PRADU Plan 3 - 749 sf 2BR/1BA (V2)
- Publisher
- Riverside County / Design Path Studio
- Last checked
- May 4, 2026
PRADU Plan 4 - 909 sf 2BR/2BA (V2)
- Publisher
- Riverside County / Design Path Studio
- Last checked
- May 4, 2026
Permit Fees - Riverside County Building & Safety (Form 284-035, 08/2025)
- Publisher
- Riverside County TLMA Building & Safety Department
- Last checked
- May 4, 2026
Permit Ready ADU - Building & Safety, Riverside County TLMA
- Publisher
- Riverside County TLMA Building & Safety Department
- Last checked
- May 4, 2026
Permit Ready ADU Program
- Publisher
- Riverside County
- Last checked
- Aug 11, 2026
Permit-Ready ADU
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Permit-Ready ADU
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Permit-Ready ADU
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Pre-Approved ADU Plans Hold Harmless Statement - County of Riverside
- Publisher
- Riverside County Building & Safety Department
- Last checked
- May 4, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County ADU program information
- Publisher
- Riverside County
- Last checked
- Aug 17, 2026
Riverside County Additional Residential Accommodations (ARA)
- Publisher
- Riverside County TLMA Planning Department
- Last checked
- May 4, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026
Riverside County permit-ready ADUs
- Publisher
- Riverside County
- Last checked
- Aug 13, 2026