California ADU rules · El Dorado County
Can I Build an ADU in South Lake Tahoe?
Yes — you can build an ADU in South Lake Tahoe. California's statewide ADU law requires every city, including South Lake Tahoe, to approve a qualifying accessory dwelling unit by right, plus a junior ADU (JADU) on a single-family lot. What varies city to city are the local specifics below.
Can you build one?
ADUs allowed
CA state lawYes — by right
ADUs and JADUs are allowed by right in all residential and mixed-use zones; ministerial approval, no hearing.
Units on a single-family lot
Local ruleAny one of: (1) 1 detached ADU + 1 converted ADU + 1 JADU; (2) 1 attached ADU + 1 JADU; (3) 1 attached ADU + 1 converted ADU; (4) 1 attached ADU + 1 detached ADU
Allows more flexible combinations than state baseline.
Units on a multifamily lot
Local ruleUp to 2 detached ADUs per parcel; conversions: at least 1, up to 25% of existing units from non-livable space
Detached ADUs capped at 2 per parcel, not 8 as in state baseline.
Junior ADU (JADU)
CA state lawAllowed
Up to 500 sq ft, within the walls of an existing single-family home (single-family lots only).
Size & height
Max detached ADU size
Local rule1,000 sq ft
Detached ADUs: 850 sq ft (studio/1-bed), 1,000 sq ft (2+ bedrooms); state floor of 800 sq ft still applies.
Max attached ADU size
Local rule850 sq ft (studio/1-bed), 1,000 sq ft (2+ bedrooms); converted ADUs may match existing structure size plus 150 sq ft for ingress/egress
Local cap is lower than state baseline for attached ADUs.
Guaranteed minimum size
CA state law800 sq ft
An 800 sq ft ADU must be allowed regardless of FAR/lot-coverage caps; a city also cannot cap an attached ADU below 850 sq ft (1,000 for 2+ bedrooms).
Max JADU size
CA state law500 sq ft
Max height
Local rule16 ft
16 ft for single-story; 18 ft allowed on multifamily lots with multistory buildings.
Setbacks
Side setback
CA state law4 ft
A city cannot require more than 4 ft side or rear setback; conversions of existing structures are exempt.
Rear setback
CA state law4 ft
Front setback
CA state lawNo front setback may block the mandatory 800 sq ft / 16-ft / 4-ft-setback ADU; otherwise per base zone
Separation from main house
CA state lawNone required
No statewide separation requirement between the ADU and the primary dwelling.
Parking
Parking required
Local ruleUp to 1 space
1 off-street space per ADU unless exempt; JADUs require no parking.
Transit parking exemption
CA state lawYes — no parking required near transit & for conversions
No parking may be required within ½ mi walking distance of transit, in a historic district, for an ADU within an existing structure, within one block of car-share, or in certain permit-parking areas.
Garage-conversion replacement parking
Local ruleNot required
No replacement parking required for garage/carport conversions.
Approval, timeline & cost
Approval path
CA state lawMinisterial (by right)
No public hearing or discretionary design review for a qualifying ADU.
Approval timeline
CA state law60 days
The agency must act within 60 days of a complete application — and the ADU is deemed approved if it does not.
Owner-occupancy
Local ruleOnly for a JADU
No owner-occupancy for ADUs; JADUs require owner-occupancy in either JADU or primary.
Impact-fee waiver
Local ruleWaived under 750 sq ft
No impact fees for ADUs/JADUs under 750 sq ft.
Permits required
CA state lawBuilding permit
Only a ministerial building permit — no conditional use permit or discretionary design review for a qualifying ADU.
South Lake Tahoe-specific factors that can change the answer
State law sets the floor, but these local conditions often decide whether a specific parcel works.
Fire sprinklers
Fire sprinklers required in ADU if required in the primary dwelling.
Historic district design
ADU design must comply with historic district guidelines.
Tahoe Regional Planning Agency (TRPA)
All ADUs/JADUs require TRPA authorization in addition to city approval.
South Lake Tahoe limits detached and attached ADUs to 1,000 sq ft (2+ bedrooms) or 850 sq ft (studio/1-bed), and allows only two detached ADUs on multifamily lots. All ADUs/JADUs require additional TRPA approval.
Frequently asked questions
Can I build an ADU in South Lake Tahoe?
Yes. California's statewide ADU law requires South Lake Tahoe to approve a qualifying accessory dwelling unit ministerial (by right), plus a junior ADU (JADU) on a single-family lot.
How big can an ADU be in South Lake Tahoe?
A detached ADU of at least 1,000 sq ft must be allowed, and an ADU of 800 sq ft can never be zoned out by floor-area or lot-coverage limits. A JADU can be up to 500 sq ft.
What are the setback requirements for an ADU in South Lake Tahoe?
Side and rear setbacks are limited to 4 ft. No front setback may block the mandatory 800 sq ft / 16-ft / 4-ft-setback ADU; otherwise per base zone.
Is parking required for an ADU in South Lake Tahoe?
Up to 1 space. No parking can be required within ½ mile of transit, for conversions, or for units inside the primary home. When a garage is converted, replacement parking is not required.
How long does ADU approval take in South Lake Tahoe?
A complete application must be acted on within 60 days, with ministerial (by right) — no public hearing or discretionary design review for a qualifying ADU.
Do I have to live on the property to build an ADU in South Lake Tahoe?
Owner-occupancy: only for a jadu. ADUs under 750 sq ft are also exempt from impact fees.
Sources
- SLTCC § 6.85.050 (Ord. 1152 § 4, last amended)
- SLTCC § 6.85.050(F)(1)
- SLTCC § 6.85.050(G)(1)
- SLTCC § 6.85.050(F)(2)(a), (G)(2)(a)
- SLTCC § 6.85.050(F)(2)(a)-(b)
- SLTCC § 6.85.050(F)(3), (G)(3)
- SLTCC § 6.85.050(H)(9)
- SLTCC § 6.85.050(H)(9)(c)
- SLTCC § 6.85.050(I)
- SLTCC § 6.85.050(D)(2)
- SLTCC § 6.85.050(H)(6)
- SLTCC § 6.85.050(H)(3)(b)
- SLTCC § 6.85.050(B)
- Cal. Gov. Code §§ 66310–66342 (ADU Law)
- HCD 2025 Accessory Dwelling Unit Handbook
- Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)
- Cal. Gov. Code § 66333 (junior ADUs)
- Cal. Gov. Code § 66321 (size minimums & height)
- Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)
- Cal. Gov. Code § 66322 (ADU parking; § 66334 covers JADU parking)
Last updated Ord. 1152 § 4. This is an AI-assisted summary of South Lake Tahoe's ADU rules, drawn from its published ordinance and California ADU law — general information, not legal advice, and it may be incomplete or out of date. Verify the controlling rule for your specific parcel with South Lake Tahoe Planning before relying on it.
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