California ADU rules · Los Angeles County

Can I Build an ADU in Burbank?

Yes — you can build an ADU in Burbank. California's statewide ADU law requires every city, including Burbank, 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.

Figures below reflect Burbank's adopted ADU ordinance layered on California state law.

Can you build one?

ADUs allowed

CA state law

Yes — by right

ADUs and JADUs are allowed by right in all residential and mixed-use zones; ministerial approval, no hearing.

Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)

Units on a single-family lot

CA state law

1 ADU + 1 JADU

At least one ADU and one JADU per single-family lot (a conversion ADU may also be possible).

Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)

Units on a multifamily lot

CA state law

Conversion ADUs (≥1, up to 25% of units) + up to 8 detached

Conversions of non-livable space (at least 1, or up to 25% of existing units) plus up to 8 detached ADUs on a lot with existing multifamily — never exceeding the number of existing units. JADUs are single-family only.

Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)

Junior ADU (JADU)

CA state law

Allowed

Up to 500 sq ft, within the walls of an existing single-family home (single-family lots only).

Cal. Gov. Code § 66333 (junior ADUs)

Size & height

Max detached ADU size

CA state law

1,200 sq ft

Statewide default cap for detached new-construction ADUs in the absence of a compliant local ADU ordinance. The unconditional by-right floor a city must always allow is 800 sq ft (see Guaranteed minimum size); a city with a compliant ordinance may set its own ceiling.

Max attached ADU size

CA state law

50% of the primary dwelling, but ≥850 sq ft (≥1,000 sq ft for 2+ bedrooms) is always allowed

Cal. Gov. Code § 66321 (size minimums & height)

Guaranteed minimum size

CA state law

800 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).

Cal. Gov. Code § 66321 (size minimums & height)

Max JADU size

CA state law

500 sq ft

Cal. Gov. Code § 66333 (junior ADUs)

Max height

Local rule

17 ft

A new detached ADU not built atop another structure is limited to one story, 12 ft to top of plate and 17 ft to any architectural feature. An ADU built on top of a detached garage/accessory structure may reach 20 ft to top of plate and 23 ft overall. Attached ADUs follow the base-zone height (§ 10-1-603). State transit/two-story exceptions (18 ft) still apply over any lower local figure.

BMC § 10-1-620.3(G)

Setbacks

Side setback

CA state law

4 ft

A city cannot require more than 4 ft side or rear setback; conversions of existing structures are exempt.

Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)

Rear setback

CA state law

4 ft

Cal. Gov. Code § 66323 (by-right ADU/JADU, 800 sq ft, 4-ft setbacks)

Front setback

Local rule

An ADU may be no closer to the front property line than the wall of the main dwelling furthest from that line; new detached ADUs on a street-facing-side lot set back at least 20% of lot width (min 10 ft) on that side

BMC § 10-1-620.3(H)(3)–(4)

Separation from main house

Local rule

6 ft

New ADUs must keep a 6-ft separation building-face to building-face and a 4-ft separation eave to eave from any adjacent structure. State law sets no separation; this local rule cannot block the state-protected 800 sq ft / 16-ft / 4-ft-setback ADU.

BMC § 10-1-620.3(H)(6)

Parking

Parking required

CA state law

Up to 1 space

At most 1 space per ADU (or per bedroom, whichever is less) — and waived in the common cases below.

Cal. Gov. Code § 66322 (ADU parking; § 66334 covers JADU parking)

Transit parking exemption

CA state law

Yes — 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.

Cal. Gov. Code § 66322 (ADU parking; § 66334 covers JADU parking)

Garage-conversion replacement parking

CA state law

Not required

When a garage/carport is demolished or converted to build an ADU, replacement parking cannot be required.

Cal. Gov. Code § 66314 (local ordinance standards)

Approval, timeline & cost

Approval path

CA state law

Ministerial (by right)

No public hearing or discretionary design review for a qualifying ADU.

Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)

Approval timeline

CA state law

60 days

The agency must act within 60 days of a complete application — and the ADU is deemed approved if it does not.

Cal. Gov. Code § 66317 (ministerial approval, 60-day deadline)

Owner-occupancy

CA state law

Only for a JADU

No owner-occupancy requirement for ADUs (the prior sunset was removed). A JADU may require owner-occupancy, principally where it shares sanitation with the main house.

Cal. Gov. Code § 66315 (owner-occupancy)

Impact-fee waiver

CA state law

Waived under 750 sq ft

An ADU of 750 sq ft or less pays no impact fees (the 750 sq ft threshold itself is exempt under § 66311.5); larger ADUs pay fees proportional to the primary dwelling. JADUs (≤ 500 sq ft) are exempt.

Cal. Gov. Code § 66311.5 (impact fees: none for an ADU ≤ 750 sq ft or JADU ≤ 500 sq ft)

Permits required

Local rule

Building permit, Recorded owner-occupancy / use covenant

Burbank's code still requires a recorded restrictive covenant and, by its terms, owner-occupancy with annual certification (§ 10-1-620.3(I)). The owner-occupancy mandate is preempted by Cal. Gov. Code § 66315 for ADUs and is treated as unenforceable; the covenant itself (no separate sale, 30-day-minimum rental) is administered at permit issuance. Confirm current practice with Burbank Community Development.

BMC § 10-1-620.3(I)

Burbank-specific factors that can change the answer

State law sets the floor, but these local conditions often decide whether a specific parcel works.

Mountain Fire Zone — brush clearance & fire sprinklers

New ADUs in Burbank's Mountain Fire Zones must meet applicable brush-clearance requirements, and if the primary dwelling requires fire sprinklers the new ADU does too.

R-1-H Single-Family Horsekeeping zone

In the R-1-H zone, new-construction ADUs are barred except conversions of an existing permitted garage, guest unit, or interior space; additions are limited to the area outside the rear 35 ft reserved for horsekeeping. Openings near 12,000 sq ft adjacent lots must be ≥15 ft from side/rear lines.

Objective design / historic compatibility

ADUs must match the main dwelling's forms, materials, colors, roof forms and window/door style and retain a single-family appearance; a converted garage door must be removed and replaced. Compatibility with same-property structures listed in the California Register is required.

Burbank's ADU rules live in BMC §§ 10-1-620 et seq., comprehensively amended by Ord. 23-4,002 (eff. 12-08-2023) to align with state law — the prior 500 sq ft size caps were raised to the 800 sq ft state floor. Distinctive local standards: a 6-ft building separation (4-ft eave-to-eave), detached-ADU height capped at 17 ft (23 ft over a garage), Mountain Fire Zone brush-clearance and sprinkler triggers, tight limits in the R-1-H horsekeeping zone, and design-match requirements. Note that Burbank's code still recites an ADU owner-occupancy requirement and replacement parking on garage conversion; both are preempted by current state ADU Law and should be unenforceable — verify with Burbank Community Development before relying on them.

Frequently asked questions

Can I build an ADU in Burbank?

Yes. California's statewide ADU law requires Burbank 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 Burbank?

A detached ADU of at least 1,200 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 Burbank?

Side and rear setbacks are limited to 4 ft. An ADU may be no closer to the front property line than the wall of the main dwelling furthest from that line; new detached ADUs on a street-facing-side lot set back at least 20% of lot width (min 10 ft) on that side.

Is parking required for an ADU in Burbank?

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 Burbank?

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 Burbank?

Owner-occupancy: only for a jadu. ADUs under 750 sq ft are also exempt from impact fees.

Sources

Last updated 2026-06-28. This is an AI-assisted summary of Burbank'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 Burbank Planning before relying on it.

Will an ADU work on your Burbank lot?

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