ADU Construction in Cerritos, Planned Around Utilities
All-electric ADU construction in Cerritos, placed where the power feed and sewer line allow it, city review handled and a quote in writing once approved.
Leaving the gas meter out of the plan frees up the whole back of a Cerritos lot. Running on a heat pump water heater, an induction cooktop and a ductless mini-split, the unit needs only a power feed, water and a sewer tie-in, so the unit can sit where a parent gets morning light and some privacy. The middle of the yard then stays open for kids to play.
Power and sewer set the footprint
With gas off the table, the two lines that matter are the electrical feed and the sewer. We open the main panel, run a load calculation and learn whether it can carry an all-electric unit or needs a larger service. The sewer side is about fall: the drain from the unit has to run downhill to the house lateral at roughly a quarter inch per foot, so we find the cleanout and its depth before placing the bathroom. Those two readings mark out a zone where the unit works, and inside it we choose a spot that keeps a clear walk between the two front doors.
Cerritos plan check and the quote
Cerritos reviews ADU drawings for zoning and building code, so the load calculation and the sewer route go onto the set where a plan checker can follow them. A separate electric meter is possible, and the utility has its own steps if you want one. Once the city signs off, a written quote sets out what construction will cost, and the permit fees sit apart from that figure. If the panel needs replacing, we say so before drawings start, so the budget for the unit is known from the beginning and nobody is caught off guard halfway through.
ADU Construction in Cerritos: what families ask
It can. A permitted ADU is a full dwelling, so your mother, wanting a kitchen of her own, or a grown son saving for a place can live in it on your Cerritos lot. We size the doors at 36 inches and build the entry with no step up where the yard allows, which helps anyone carrying laundry or using a walker.
Turning the garage into the unit keeps the panel and the sewer close, since an attached or nearby garage already sits beside those lines. A detached unit gives more freedom on placement and a fresh slab. Your choice on a Cerritos lot hinges on how sound the garage is, whether you still want it for storage, and how far the drain has to run.
State law sets a floor under any ADU size limit Cerritos adopts: a one-bedroom unit can be held to no less than 850 square feet, a larger one to no less than 1,000, with a single-story height of 16 feet on most lots. The house already on the parcel still shapes what fits, so we measure first.
ADU Construction in other cities
Other projects we take on in Cerritos
Your Cerritos project, start to finish
Tell us about the house and the space you need. We reply by phone or email to plan a visit.

