

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.
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.

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.
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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...
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The slab and framing are in usable condition
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Ceiling height still works after insulation and flooring
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Electrical, water and sewer connections are reasonably close
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The location creates a practical private entrance and layout
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Losing covered parking does not create a major problem
New pavers may be the right fit
Consider a detached ADU when...
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The roof, slab or major wall sections require replacement
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The garage sits in an awkward location for daily living
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You want to preserve the existing covered parking
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The lot supports a stronger orientation, ceiling height and window plan
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Rebuilding the garage would approach new-construction scope
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
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



















