ADUs and additions, Claremont, Los Angeles County
ADU Construction in Claremont
On a Claremont ADU visit the sewer cleanout is opened first, because the lateral's depth and direction decide where a unit can sit and which type fits.
On a Claremont visit, our first move is to lift the cap off the sewer cleanout. How deep it sits and which way the line heads toward the street show us where a new unit can sit and still drain by gravity, which narrows the four ADU types before we measure anything else. Claremont lies in Los Angeles County at the Inland Empire end of our service area, so inland sun and dry wind shape what we draw as well.
What the lateral decides
A detached cottage at the back of the yard needs the longest drain run, and the fall over that distance has to stay within what the plumbing code allows. If the lateral is shallow or leaves toward the street at an awkward angle, an attached unit or a garage conversion closer to the house may drain without a pump. A JADU uses the house plumbing, so it rarely changes the picture. If reaching a unit at the rear takes a pump, we set its cost and upkeep beside the other options.
Power, heat and the city
With the drain path known, we read the panel and run a load calculation to see whether the service can feed a kitchen, a bath and heating and cooling for the new unit. Hard sun on an inland lot points toward a light roof, a well insulated attic and glass that limits heat gain where the late day sun lands. The City of Claremont handles plan check and inspections, and the setbacks and height it applies under state ADU law are measured on the site plan we submit.
What we build in Claremont
Second units and room additions lead, with the rest of our services available on the same lot.
Planning a unit in Claremont?
Send the address. We check which ADU types the lot allows and reply with the next step.