Additions · 11
One more bathroom, where you actually need it.
Adding a primary bath, a powder room, or a guest suite — designed and built to feel original to the house.
Bathroom additions in Los Angeles
A new bathroom, designed in.
Adding a bathroom is a coordination problem disguised as a finish-out. Plumbing routes, structural impact, ventilation paths, and the tie-in to existing systems all have to be solved before the first tile gets ordered.
Sage n' Slate plans and builds bathroom additions across Los Angeles, handling the engineering and the finishes in the same conversation.
Month typical bath addition
Team, plans to fixtures
Tile, fixtures — curated
Why homeowners choose us
What in-house planning brings to a bathroom addition.
Most bathroom add-on disasters trace back to bad coordination — drainage routed badly, fixtures specified after the framing, lighting designed last.
Plumbing and electrical routes planned with the framing
Tile, stone, and fixture curation in-house
Lighting designed as part of the room, not added later
Material choices that survive humidity and daily use
Senior trades
waterproofing that holds up
Our process
How a bathroom addition moves through the studio.
Same considered sequence as larger additions, scaled appropriately.
Discovery
location, scope, plumbing access, and budget
Design
layout, fixtures, finishes, and lighting
Engineering
structural and MEP coordination
Permits and approvals
Demolition and rough-in
Waterproofing, tile, stone, and finishes
Plumbing trim, lighting, and final walk-through
What we build
The bathroom additions we take on.
Anything from a powder room to a full primary suite.
- 01Primary-suite bathrooms (often paired with a bedroom addition)
- 02Guest baths and Jack-and-Jill layouts
- 03Powder rooms in unexpected locations
- 04Pool baths and outdoor shower additions
- 05Wet rooms and curbless walk-in showers
Service area
Sherman Oaks and greater Los Angeles.
Sage n' Slate is based in Sherman Oaks and builds bathroom additions throughout Los Angeles and the surrounding areas.
Service Area
34.05° N / 118.24° WLos Angeles & surrounding neighborhoods.
Common questions
Asked and answered.
How long does a bathroom addition take?
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Most run 3–5 months of construction, plus 6–10 weeks of design and permitting beforehand.
Where can I add a bathroom?
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Almost anywhere with access to plumbing and structural capacity. We do a quick feasibility read early so you know what's possible.
Do bathroom additions require permits?
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Yes. Any new bathroom — even built into existing square footage — requires plumbing and electrical permits.
Can you help with tile and fixture selection?
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Yes. Curation is part of the work. We'll guide stone, tile, fixtures, and lighting to the room and the rest of the home.
Start a project
Let's talk about your bath additions.
Tell us a little about the home and the scope. We'll come back within two business days.