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ADU / Garage Conversion in Newport Beach, Serving Orange County & Los Angeles

- Is Your Garage a Fit?

Plan your ADU with one licensed design-build team coordinating feasibility, design, plans, permits, structural work, utilities and complete construction.

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Design, plans, permits and construction · CA License #1089475

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Licensed Contractor

Residential remodeling and construction

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Design-Build

Planning, permits and construction

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One Project Manager
Clear coordination from start to finish

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Free Estimates
In-home project consultations

Feasibility before floor plans

Know what the existing structure can support

Many attached and detached garages can become legal living space, but the slab, ceiling height, framing, roof, utilities, parking and location on the lot determine how much work the conversion requires.
 

Seamless Construction Inc evaluates those conditions before design begins, so the plans reflect the real structure, approval path and construction scope instead of assumptions that become change orders later.

✔ Slab & moisture review
✔ Framing condition
✔ Parking & access
✔ Ceiling & roof height
✔ Utilities & trenching
✔ Permits & coastal review
detached adu

ADU and garage conversion services

What we can include in your ADU project

Your project can convert an existing garage, create a detached backyard unit or coordinate a larger residential plan with design, permits, utilities and construction under one team.

Our projects

ADU spaces designed to feel like complete homes

Explore garage conversions, detached units, compact layouts and finished interiors. Temporary stock photography is shown until final Seamless project photos are selected.

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Planning for coastal lots

ADU feasibility depends on more than square footage

The paver is the finish layer. Long-term performance depends on what happens below it, including subgrade conditions, aggregate depth, moisture movement, slope and edge restraint.

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Slab and moisture conditions

Garage floors may slope, lack a vapor barrier or sit close to moisture that must be managed before living-space finishes are installed.

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Ceiling and structural height

Flooring, insulation and framing reduce clear height, while some low roof structures need redesign to create compliant, comfortable space.​

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Utilities, access and fire separation

Electrical capacity, sewer distance, trench routes, entries, setbacks and nearby structures all influence layout and cost.​

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Parking and coastal review

Properties near the peninsula, harbor or beach may need additional parcel-specific planning around parking, access and exterior changes.

Our design-build process

A clear ADU planning and construction process

One team coordinates feasibility, design, budget, approvals, construction, inspections and the final walkthrough.

STEP 1

Free In-Home Estimate

We discuss your goals and review the garage, lot, access, parking, utilities and visible structural conditions.

STEP 4

Proposal, Permits & Selections

You receive a written scope while permit documents, approvals, materials and scheduling are coordinated.

STEP 2

Feasibility & Site Review

Measurements, slab conditions, ceiling height, setbacks, drainage and utility routes are evaluated before design.

STEP 5

Construction & Project Management

​Demolition, structural work, rough utilities, inspections, insulation and finishes are managed by one team.

STEP3

Design & Construction Plans

The layout, kitchen, bathroom, entries, windows, structure, utilities and finish direction are developed together.

STEP 6

Final Inspection & Walkthrough

We complete required closeout steps and punch-list work, then review the finished ADU with you.

ADU & Construction Projects

Choosing the right approach

Garage conversion or new detached ADU

A sound garage can provide an efficient starting shell. A new detached ADU may be the better investment when the existing slab, roof, framing, location or parking creates too many limitations.

Conversion may be the right fit

Consider converting the garage when...

  • The slab and framing are in usable condition

  • Ceiling height still works after insulation and flooring

  • Electrical, water and sewer connections are reasonably close

  • The location creates a practical private entrance and layout

  • Losing covered parking does not create a major problem

New pavers may be the right fit

Consider a detached ADU when...

  • The roof, slab or major wall sections require replacement

  • The garage sits in an awkward location for daily living

  • You want to preserve the existing covered parking

  • The lot supports a stronger orientation, ceiling height and window plan

  • Rebuilding the garage would approach new-construction scope

Not sure whether your garage can become an ADU?


Start with a free in-home estimate in Newport Beach, Orange County, or Los Angeles.

Frequently asked questions

Before you convert a garage or build an ADU
 

​Clear answers about feasibility, timelines, permits, parking, slab conditions, utilities and the design-build process.

ADU / Garage Conversion FAQs

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From feasibility to final walkthrough

Schedule your free in-home estimate


Tell us how you want the new unit to function, who it will serve and what you know about the existing garage. We’ll evaluate the property and help you determine the right next step.
 

(844) 554-5515  |  info@seamlessconstructioninc.com

Serving Southern California
 

Newport Beach, Orange County and Los Angeles
 

Office:
4343 Von Karman Ave #150F
Newport Beach, CA 92660

Our Service Areas

Seamless Construction Inc is based in Newport Beach and serves homeowners throughout Orange County and Los Angeles.

Orange County Service Areas: 
Aliso Viejo, Corona Del Mar, Fullerton, Huntington Beach, Irvine, Lake Forest, Laguna Niguel, Laguna Beach, Ladera Ranch, Laguna Woods, La Habra, Mission Viejo, Newport Beach, Rancho Santa Margarita, San Juan Capistrano, San Clemente, and Yorba Linda.

Los Angeles Service Areas:
Beverly Hills, Diamond Bar, Glendora, Hacienda Heights, Palos Verdes Estates, Palos Verdes, Pacific Palisades, Pasadena, La Verne, Rowland Heights, Rolling Hills, Rolling Hills Estates, Santa Monica, and Walnut.

CA License #1089475

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