Additions · 10
Go up. Stay put.
Second-story additions that double your home without changing the lot — or the neighborhood you love.
Second-story additions in Los Angeles
Add a floor without leaving the neighborhood.
A second-story addition is one of the most efficient ways to grow a home — you keep the lot, the trees, and the address you love, and you roughly double the square footage above.
Sage n' Slate plans, engineers, and builds second-story additions across Los Angeles. The structural integration and architectural fit are where these projects succeed or fail; we coordinate both from the first sketch.
Square footage potential
Engineering coordination
Team, design to handover
Why homeowners choose us
What a coordinated team brings to going vertical.
Going up means cutting into the existing roof and reframing the structure beneath. It is a tightly choreographed project that rewards experience and punishes improvisation.
Structural engineering integrated from day one
Architecture that respects the existing home's proportions
Senior framing crews
clean tie-ins, no shortcuts
Weather-protection plans during open-roof phases
Honest schedules and disciplined sequencing
Our process
How a second-story addition moves through the studio.
A disciplined sequence designed to minimize disruption and protect what's below.
Feasibility
structural capacity, zoning, height limits, setbacks
Concept design
massing, rooflines, and street-facing fit
Design development and interior planning
Engineering
load path, foundation review, lateral analysis
Construction documents and permits
Temporary protection, demolition of existing roof, and reframing
New floor, walls, roof, systems, and finishes
Inspections, walk-through, and handover
What's included
The work a second-story project covers.
Everything from the new framing down to the touch-ups on the floor below.
- 01Structural reinforcement of the existing first floor
- 02New floor framing and decking
- 03Full second-floor framing, envelope, and roof
- 04Stair construction or rework
- 05MEP extensionselectrical, plumbing, HVAC
- 06Interior finishes, cabinetry, and millwork
- 07Exterior tie-instucco, siding, paint
Service area
Sherman Oaks and greater Los Angeles.
Sage n' Slate is based in Sherman Oaks and builds second-story additions for homeowners throughout Los Angeles and the surrounding areas.
Service Area
34.05° N / 118.24° WLos Angeles & surrounding neighborhoods.
Common questions
Asked and answered.
Can my house support a second story?
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Most can with some structural reinforcement. The feasibility study answers this early — we look at the existing foundation, framing, and lateral capacity before design proceeds.
How long does a second-story addition take?
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Typical construction is 7–12 months, plus 4–6 months for design, engineering, and permits beforehand.
Can we live in the house during construction?
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During the open-roof phase, usually no. The rest of the project allows for limited occupancy. We'll plan the relocation window with you.
Will the addition look added-on?
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Not if the design is right. We match rooflines, proportions, and materials so the result reads as one house, not two stacked.
Start a project
Let's talk about your second story.
Tell us a little about the home and the scope. We'll come back within two business days.