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ADU builder in Newport Beach, CA

From the bluffs of Corona del Mar to the neighborhoods around the harbor, many Newport Beach properties are in the Coastal Zone. We plan your ADU around Newport’s size limits and coastal rules from the start.

Backyard ADU designed and built by ADU Homes
57ADU permits (2025)
850 sq ft (1 bed) · 1,000 sq ft (2 bed)Detached ADU size
16 ft (18 ft near transit)Detached height
Corona del MarIncludes

Coastal Orange County

Building an ADU in Newport Beach.

What’s different about adding an ADU here, and how we plan around it.

Corona del Mar is Newport Beach

Corona del Mar permits through the City of Newport Beach, so the same ADU ordinance and process apply.

Coastal Zone considerations

Much of Newport Beach is in the Coastal Zone, where some ADU projects need coastal review and, in parts of the zone, replacement parking. We confirm your parcel’s status first.

Counter submittals and compact sizes

Newport accepts ADU plans at the permit counter. Detached ADUs are sized by bedroom count (850 sq ft for one bedroom, 1,000 sq ft for two) at 16 ft, so efficient single-story plans fit best.

Plans that fit

Floor plans that work within Newport Beach’s rules.

These ready-to-build plans fit Newport Beach’s size, height limits. Our studio can adjust any of them to your lot.

Plan 400B ADU floor plan, studio, 400 sq ft

Plan 400B

Studio · 1 Bath · 400 ft²

Plan 440 ADU floor plan, 1 bed, 440 sq ft

Plan 440

1 Bed · 1 Bath · 440 ft²

Plan 450 ADU floor plan, 1 bed, 450 sq ft

Plan 450

1 Bed · 1 Bath · 450 ft²

Plan 832 ADU floor plan, 2 bed, 832 sq ft

Plan 832

2 Bed · 1 Bath · 832 ft²

Plan 854 ADU floor plan, 2 bed, 854 sq ft

Plan 854

2 Bed · 2 Bath · 854 ft²

Plan 1000 ADU floor plan, 3 bed, 1,000 sq ft

Plan 1000

3 Bed · 2 Bath · 1,000 ft²

How we work in Newport Beach

One team from first visit to move-in.

01

Free ADU analysis

We review your Newport Beach lot, what the local rules allow and which plans fit, with an estimated cost.

02

Design

Our in-house studio prepares construction-ready plans in about 1–2 months.

03

Permits

We submit to the City of Newport Beach and handle every round of plan check.

04

Fixed-price build

Construction in about 4–5 months, managed by one project manager from our Long Beach office.

Newport Beach ADU questions

Common questions in Newport Beach.

Does Corona del Mar have its own ADU rules?

No. Corona del Mar is part of the City of Newport Beach, so Newport’s ADU ordinance and permitting apply.

Is parking required for an ADU in Newport Beach?

State law waives ADU parking in many cases, but within parts of the Coastal Zone the city may require replacement parking for some projects. It depends on your address.

How big can an ADU be in Newport Beach?

Up to 850 sq ft with one bedroom or 1,000 sq ft with two, with a 16 ft height limit (18 ft near transit).

Start a Conversation

Planning an ADU in Newport Beach?

Tell us about your Newport Beach property and we’ll prepare a free ADU analysis: what fits on your lot, the rules that apply, recommended plans, estimated cost and timeline.

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