CA LIC. #1147388 · LICENSED, INSURED & WORKERS' COMP(818) 200-0455

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Additions & ADUs

Add space, add rental income, or rework the whole house. We coordinate plans, permits, inspections and every trade through final sign-off.

Additions & ADUs by OD Building Development

What's included

Everything under one contract

California has made ADUs much easier to permit over the last several years — for example, converting a garage no longer means you have to replace the parking. Each city and lot still has its own rules, so we start every addition or ADU by checking what your property allows.

Investors and landlords: we build rental ADUs and update units between tenants. Ask about multi-unit work.

  • Detached and attached ADUs
  • Garage conversions
  • Junior ADUs
  • Room additions and second-story work
  • Whole-home remodels
  • Foundations and framing
  • Electrical, plumbing and HVAC
  • Coordination with your designer or engineer
  • Permit submittals and inspections
  • Exterior, patio and landscape tie-in

Our work

Recent projects

All projects

How it works

From walkthrough to final

  1. Walkthrough

    We come out, look at the space, measure, and talk through what you want and what it will take.

  2. Written estimate

    A line-item price and scope in writing — what's included, what isn't, and how long it should take.

  3. Permits & schedule

    We pull the permits, order materials and lock a start date. You get one point of contact.

  4. Build & final

    Clean, protected jobsite, regular updates, city inspections passed, and a final walkthrough with you.

Questions

Common questions

How long does an ADU take?

Plans and permits often take longer than construction. We'll walk you through a realistic timeline for your lot and city at the estimate.

Do you handle the plans and permits?

We coordinate with a designer or engineer for plans, submit for permits, and manage inspections through final.

Can you convert my garage into an ADU?

Often, yes. We'll check your garage's condition, setbacks and utilities during the walkthrough.

Ready to talk about your project?

Free on-site estimate. We answer the same business day.

Call (818) 200-0455Get a Free Estimate