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Orange County's Fastest ADU Builder

ADU Construction

Have approved plans? We'll build fast. Need design? We do it all. Garage conversions in 4-6 months. Detached/Attached ADUs in 5-7 months.

4-6
Months (JADU)
5-7
Months (Detached/Attached)
60
Day Permits
Modern ADU construction by Anchor Builders

Rental Income

Generate $2,000-$4,000+ monthly in Orange County rental markets.

Property Value

ADUs typically add 20-30% to your home's value.

Multi-Gen Living

Keep family close while maintaining independence.

Home Office

Separate work space for the remote work era.

ADU Types

Choose the ADU style that best fits your property and goals.

Detached ADU

A standalone structure in your backyard, offering maximum privacy and flexibility.

  • Up to 1,200 sq ft
  • $240-$250 per sq ft
  • Full kitchen & bath
  • Maximum privacy

Attached ADU

Connected to your main home, sharing one or more walls for efficient construction.

  • Up to 1,200 sq ft
  • $240-$250 per sq ft
  • Shared wall construction
  • Easy utility connections

Garage Conversion

Transform your existing garage into a comfortable living space.

  • 400-600 sq ft
  • $110K (2-car) / $135K (3-car)
  • Faster construction
  • No lot space required

Junior ADU

A smaller unit created within your existing home footprint.

  • Up to 500 sq ft
  • $100K-$200K
  • Interior conversion
  • Lowest cost option

What's Included

Our full-service ADU construction includes everything you need from start to finish.

  • Site assessment and feasibility study
  • Custom architectural design
  • All permit applications and approvals
  • Foundation and structural work
  • Electrical, plumbing, and HVAC
  • Interior finishes and fixtures
  • Landscaping restoration
  • Final inspections and sign-off
ADU construction process

Our Streamlined ADU Process

From concept to keys, we manage every step. Here's what to expect.

Garage Conversion

Design & Engineering2-3 months
Construction2-3 months
Total Timeline4-6 Months

Detached ADU

Design & Permits2-3 months
Construction3-4 months
Total Timeline5-7 Months

8 Required Inspections (We Handle All of Them)

1Underground Utilities
2Foundation
3Concrete Slab/Under-Floor
4Under-Floor/In-Wall Systems
5Shear Wall & Sheathing
6Close-In Inspection
7Final Completion
8Special Inspections

Pre-Approved Plans

Using pre-approved plans can cut permit time by 50%. Santa Ana and unincorporated OC already offer these.

Early Utility Coordination

We start utility coordination 3-4 months early. This prevents delays during construction.

Complete Applications

Incomplete applications are the #1 cause of delays. Our team submits complete, accurate docs the first time.

Frequently Asked Questions

How long does ADU construction take?

We're one of the fastest in Orange County. Garage conversions: 4-6 months total. Detached ADUs: 5-7 months total (including design and permits).

What permits are required?

ADUs require building permits from your local jurisdiction. California mandates 60-day approval for complete applications. We handle all permit applications, engineering, and inspections.

Can I rent out my ADU?

Yes! California law (AB 976) allows ADU rentals with no owner-occupancy requirement. Many OC owners generate $1,600-$4,300+ monthly in rental income depending on size.

What's the typical cost?

Junior ADUs: $100K-$200K. Garage conversions: $110K-$135K. Detached/Attached ADUs: $240-$250 per sq ft. Costs depend on size, finishes, and site conditions. Contact us for a detailed estimate.

Do you work with existing plans?

Absolutely! If you have city-approved blueprints, we provide construction-only bids and can break ground fast. We also offer full design-build services.

Ready to Build Your ADU?

Get a free consultation and detailed quote for your ADU project.

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