ADU Construction in Brentwood
Brentwood ADUs with roofs that match an older main house and carry water off the lot, built with ember-ready details and permits through LADBS.
Every ADU roof has to send its rain somewhere, and on a Brentwood lot that path is drawn before the framing starts. We match the slope of the older main house so the two rooflines read together, then size gutters and downspouts to carry runoff to splash pads, planters or a dry well set clear of both foundations. Where a lot sits close enough to the ocean for damp, salty air, fasteners and gutter metal are picked to hold up.
Roof covering, embers and the coastal question
Brentwood includes land in mapped fire hazard zones, and a unit on one of those lots needs a Class A roof, ember-resistant vents and gutter guards made of metal so dry leaves cannot gather where a spark lands. That metal work is specified in aluminum or stainless steel so corrosion does not shorten its life. Whether a given lot falls inside the California Coastal Zone is checked early, because a lot inside it may need a coastal review before LADBS issues the building permit. The answer changes the paperwork far more than the design.
Protecting the look and footing of the main house
An older house tends to get its character from its roof: the pitch, how far the eaves reach and the way the fascia is finished. The ADU repeats those moves at a smaller size so it supports the house without competing. We also look at what the new roof does to the old building. A unit set close to the house can throw water toward its foundation or crawlspace, so downspouts are routed away and the soil is shaped to fall from both walls. Original windows and trim on the house stay untouched.
About our ADU Construction serviceEverything we do in Brentwood
ADU Construction in Brentwood: common questions
Sharing the service works when the numbers allow it. We open the main panel, note the breaker sizes and any old fuse circuits, and work out the added load from the unit's appliances. The sewer lateral gets a camera run, since a cracked clay line under the yard is easier to fix before the new connection goes in.
When its walls and roof frame are sound, a detached garage can be converted. Expect a new slab or an insulated overlay, footings where none exist, new windows and a full set of utilities. A garage near the property line may keep its spot under state conversion rules, though fire separation between buildings still applies.
Siding profile, window shape and roof slope carry most of the resemblance. We measure the house trim and have matching boards milled when stock sizes look wrong. On a lot that gets salty air, siding and trim come in materials that hold paint well, so the match still looks right long after the painters leave.
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