ADU Construction in Hermosa Beach
Serving 90254 and Manhattan Beach, Redondo Beach, Torrance
On a lot this narrow there is rarely open ground for a detached dwelling, so the realistic second unit in Hermosa Beach is built into or above what already exists — most often the alley-side garage. The constraint is structure and access rather than planning ambition, and it is worth establishing which of those is binding before anything else.
Real projects. Real prices.
73 finished remodels published with their final price — nothing hidden.
What our finished LA work actually cost: 27 kitchens ran $23k–$84k, median $50k; 28 bathrooms $28k–$105k, median $38k; 17 whole-home remodels $36k–$440k, median $150k. Real final prices from our own job records, not estimates.
$33,000 A backlit mirror over a double vanity, with stone-look tile and matte black fittings throughout.
$38,000 Emerald shaker cabinetry and brass hardware around a cream range and an apron sink.
$45,000 Rust and blue slate-tone tile over a pebble mosaic shower floor, with bronze fittings.
$75,000 Wood shaker cabinetry under a full-height quartz slab, with a marble-look hall bath.
$150,000 A cobalt glass-tile backsplash with marble-look slab baths in brushed brass.
$440,000 Stone-look tile bathrooms with freestanding tubs, under an exposed beam ceiling.
Second units where there is no back garden
Above the garage is where the space is
The existing structure, the slab under it and how the walls are framed decide whether a unit above is straightforward or a rebuild. That survey is the first piece of work, not a later one.
Access for two households through one alley
Cars, bins, bicycles and deliveries all reach the property the same way, and a second household uses the same route. Drawing that honestly beforehand prevents the arrangement that looks fine on paper and is intolerable in practice.
The coastal approval sits alongside the building permit
Work inside the coastal zone carries its own consent where it is triggered. It runs in parallel with the building permit rather than after it, and designing for it early is what keeps it from becoming the thing the schedule waits on.
Building it on a site with no road
Construction above a garage on a walk street means material arrives by a route, not a lorry. That is a programme decision taken at design stage, because it changes what can be built in one piece.
Written by Onn Cohen-Meguri, founder and designer at Design Onn Point — 12+ years in business, 1,200+ finished Los Angeles projects. CSLB #1133368.
Pricing in Hermosa Beach
Market estimate, not our own project data.
Talk to Onn about your Hermosa Beach adu construction.
Free consult, no obligation. Onn reads every inquiry personally — and aims to reply within one business day.
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