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S&G Construction

ADU Construction in Orange County, CA

Accessory dwelling units built on residential property, from a detached new build to a garage or interior conversion.

S&G Construction Inc. builds accessory dwelling units on residential property throughout Orange County, California, and in Long Beach, Lakewood and the Inland Empire. The license the work is done under is CSLB Lic. #1113089.

What is an ADU?

An accessory dwelling unit is a second, self-contained home on a lot that already has a house on it. Self-contained is the part that matters: it has its own kitchen, its own bathroom and its own entrance, which is what separates an ADU from a converted bedroom or a bonus room over the garage.

There are three common forms. A detached ADU is a new structure in the yard, usually at the back of the lot. An attached ADU is built onto the existing house and shares a wall with it. A conversion turns space that already exists into a dwelling, most often a garage, and sometimes part of the main house. California law has treated ADUs as a distinct category of residential construction for several years now, which is why the term shows up on its own rather than as just another addition.

What makes one ADU different from another?

Four things, mostly. How big it is. Whether it is a new structure or a conversion of something standing. How far it sits from the water, sewer and electrical service already on the property, because the distance those runs have to travel is real work. And what the site is like to get equipment and material into, which on a tight lot behind an existing house is not a small question.

How much does an ADU cost?

There is no useful average, because those four things move the number more than anything else, and then the finishes move it again. What is worth doing is walking the property and looking at where the unit would go, what the existing service lines do, and what access looks like.

What S&G Construction takes on

Full-scope residential projects only. We do not take on handyman work, small repairs, or basic installations, and we do not do commercial work.

Estimates are free. Call (657) 527-4538 and describe the lot.

ADU Construction Questions

What is an ADU?

An accessory dwelling unit is a second, self-contained home on a lot that already has a house on it. It has its own kitchen, bathroom, and entrance. In California an ADU can be a detached new build, an addition to the existing house, or a conversion of space you already have, such as a garage.

What does an ADU cost to build?

It depends on the size of the unit, whether it is a new build or a conversion, how far it sits from existing water, sewer, and electrical service, what the site access is like, and the finishes you choose. Those are the things worth walking through in person, so call for a free estimate and you will get a number for your actual property rather than an average.

Can a garage be converted into an ADU?

A garage conversion is one of the common ways an ADU gets built, because the slab, walls, and roof already exist. What it takes depends on the condition of the structure and how the plumbing and electrical need to be run. We look at the garage before saying what is realistic.

Do you build ADUs outside Orange County?

Yes. S&G Construction works anywhere in Orange County and also takes projects in Long Beach, Lakewood, and the Inland Empire.

Other Services

  1. 01

    Full Home Remodels

    Whole-house residential remodels, where most or all of the rooms in the home are reworked as one project rather than one at a time.

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  2. 02

    Kitchen Remodels

    Kitchen remodels for homes, from replacing cabinets, counters, and finishes to opening the room up and moving the layout.

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  3. 03

    Bathroom Remodels

    Bathroom remodels for homes, including tile, vanities, tubs and showers, and reworking a layout that no longer fits the room.

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Need ADU Construction in Orange County?

Call (657) 527-4538 or send a message and we will get back to you with an estimate.

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