ADU Regulations in Redding, California
Shasta County · CA · Pop. 92,000
Max ADU Size
1,200
sq ft detached
Rear Setback
4 ft
Permit Timeline
60 days
Build Cost
$120,000 – $245,000
Zoning
Allowed ADU Types
Redding is the regional hub of Northern California's Shasta County. ADU regulations follow California state law. The city has actively streamlined ADU permitting to address the region's housing shortage.
Source: City of Redding — Accessory Dwelling Units · Redding Municipal Code Title 18 (Zoning), Section 18.41.040
Dimensions
Size & Setback Requirements
Detached
1,200
sq ft max
JADU
500
sq ft max
Attached
50% of primary home, max 1,200 sq ft
Setbacks
front
Same as primary dwelling per underlying zone
side
4 ft
rear
4 ft
Max height: 16 ft
Lot coverage: Per underlying zone
Redding's larger residential lots in many RS zones provide generous space for detached ADUs. Wildfire-adjacent properties (Tier 2 or 3 High Fire Hazard Severity Zones) may require additional defensible space and ignition-resistant construction.
Permitting
Permit Process
Department
City of Redding Development Services Department — Planning Division
Review Timeline
60 days
Permit Fees
$4,500 – $9,000
Impact Fees
Impact fees waived for ADUs under 750 sq ft; proportional fees apply above that threshold
Required Documents
- ›Site plan (to scale, showing lot dimensions, all structures, setbacks)
- ›Floor plans
- ›Elevations
- ›Title 24 energy compliance (residential)
- ›Structural drawings
- ›Wildfire hazard assessment (if in HFHSZ)
Redding's permitting fees are among the more affordable in California, reflecting the city's commitment to housing production. Properties in High Fire Hazard Severity Zones should budget for additional fire-hardening construction costs.
Visit City of Redding Development Services Department — Planning Division →Infrastructure
Utilities & Requirements
Solar
Required
Parking
Not required
Separate Meter
Optional
Fire Sprinklers
See note
Financials
ADU Costs in Redding
Typical Build Cost
$120,000 – $245,000
Cost per Sq Ft
$170 – $230
Monthly Rental
$1,100 – $1,800/mo/mo
Property Value Added
Adds $115,000 – $240,000 to property value
Available Grants & Programs
- ★CalHFA ADU Grant Program available (up to $40,000 for pre-development costs)
Redding offers relatively low construction costs compared to coastal California. The regional medical center (Dignity Health — Mercy Medical Center) and government employment provide stable rental demand. Northern California's lower land costs mean strong yield potential for ADU investors.
Use the free ADU Cost Calculator →Free Service
Get Contractor Quotes in Redding
Connect with licensed local ADU contractors. Takes 2 minutes, no obligation.
Redding Quick Facts
- Max size1,200 sq ft
- Rear setback4 ft
- Permit timeline60 days
- Build cost$120,000 – $245,000
- Rental income$1,100 – $1,800/mo/mo
- Owner occupancyNot required
Official Source
City of Redding — Accessory Dwelling UnitsRedding Municipal Code Title 18 (Zoning), Section 18.41.040
Last verified: March 14, 2026
Free Tools
Stay Updated
ADU rules change often.
Get notified when Redding's regulations update, plus guides on permitting and financing.