ADU Alliance Logo
ADU ALLIANCEOrange County Design-Build
ARCHITECTURAL FLOOR PLANS • ORANGE COUNTY

Engineered for Living.
Permit-ready by design.

Five precision-engineered floor plans designed specifically to satisfy California state setback laws and Orange County municipal building codes.

The Balboa Studio Floor Plan
Studio · 1 Bath · 350 sq ft
Studio1.0 Bath

The Balboa Studio

A compact studio layout that maximizes every square inch. Full kitchen, private bathroom, and ample built-in storage.

Sq Footage
350
Bedrooms
Studio
Baths
1.0 Bath
Included Specifications:
  • Full-size kitchen with quartz counters
  • Standing-seam metal roof
  • Mini-split heat pump HVAC
  • Vaulted ceiling with LED lighting
Turnkey Base Package
$149,000
Get Site Feasibility →
The Laguna Suite Floor Plan
Studio + Office · 1 Bath · 430 sq ft
Studio + Nook1.0 Bath

The Laguna Suite

Generous open floor plan featuring a dedicated work-from-home office nook, full designer bath, and floor-to-ceiling windows.

Sq Footage
430
Bedrooms
Studio + Nook
Baths
1.0 Bath
Included Specifications:
  • Dedicated workspace with built-ins
  • Frameless glass walk-in shower
  • High-efficiency Low-E windows
  • All-electric solar-ready
Turnkey Base Package
$159,500
Get Site Feasibility →
The Monarch One Floor Plan
1 Bed · 1 Bath · 560 sq ft
1 Bedroom1.0 Bath

The Monarch One

Private master bedroom sanctuary with walk-in closet, expansive open-plan living and dining, and luxury oak cabinetry throughout.

Sq Footage
560
Bedrooms
1 Bedroom
Baths
1.0 Bath
Included Specifications:
  • Private bedroom with walk-in closet
  • Full kitchen island with bar seating
  • In-unit washer/dryer closet
  • Exterior fiber-cement cladding
Turnkey Base Package
$182,000
Get Site Feasibility →
The Pacifica Two Floor Plan
2 Bed · 1 Bath · 715 sq ft
2 Bedrooms1.0 Bath

The Pacifica Two

Dual private bedrooms with shared central open-concept living, perfect for extended family living or guest suites.

Sq Footage
715
Bedrooms
2 Bedrooms
Baths
1.0 Bath
Included Specifications:
  • Two private bedrooms with built-in closets
  • Large open living & dining area
  • Full chef kitchen with appliances
  • Separate electrical subpanel
Turnkey Base Package
$208,000
Get Site Feasibility →
The Catalina Grand Floor Plan
2 Bed · 2 Bath · 800 sq ft
2 Bedrooms2.0 Baths

The Catalina Grand

Our flagship luxury 2-bedroom, 2-bathroom floor plan with primary suite, laundry closet, and expansive sliders.

Sq Footage
800
Bedrooms
2 Bedrooms
Baths
2.0 Baths
Included Specifications:
  • Dual ensuite bathrooms
  • Expansive 9ft vaulted ceilings
  • 12ft sliding glass wall system
  • High-end designer plumbing fixtures
Turnkey Base Package
$242,000
Get Site Feasibility →
WHAT IS ALWAYS INCLUDED

The ADU Alliance Standard

Every contract is 100% turnkey with zero hidden trade costs or change orders.

Complete Architectural Set

3D blueprints, structural engineering calculations, and Title 24 energy compliance drawings ready for city submission.

100% In-House Permitting

We manage all city plan checks, correction notices, and building department fees directly until permit issuance.

Turnkey Ground-Up Build

Foundation, framing, plumbing, 200A electrical subpanel, mini-split HVAC, quartz kitchens, and final keys.

Want a Custom Floor Plan for Your Lot?

Our architectural team can modify any pre-designed model or draft a 100% custom floor plan tailored to your lot dimensions.

Book Free 30-Min Property Walk →