More square footage. Same home, only better.
First-floor extensions, second-story additions, and master suites — engineered, permitted, and finished so they read as part of the original architecture.
Reliable room additions for Los Angeles homes & businesses.
A well-executed room addition can rival the value of a move-up purchase — without uprooting your family, schools, or commute. The hard part is making the new square footage feel like it was always there.
Marc's Construction handles room additions from structural engineering through final paint, with a sharp eye for matching rooflines, stucco textures, and interior trim to your existing home.
Everything your room additions project needs — under one roof.
Architectural Plans & Engineering
Stamped plans, Title 24, and structural calcs ready for LADBS.
Foundation & Framing
New foundation pours, post-and-beam, and full structural framing.
Roofing & Exterior Match
Roofline integration, stucco color matching, and seamless siding.
Plumbing, Electrical, HVAC
Service upgrades and ducting extensions for the new footprint.
Interior Finishes
Drywall, paint, trim, doors, and flooring matched to the existing home.
Second-Story Additions
Engineered floor systems, stair builds, and roof reframes.
The benefits homeowners feel from day one.
Avoid Moving Costs
Adding square footage typically costs less than buying up in LA.
Significant Equity Gain
Permitted, recorded additions add directly to appraised value.
Custom-Fit Layouts
Design the exact room your family actually needs.
Disruption Managed
Phased construction lets you stay in most of the home.
A clear, predictable path from idea to final walk-through.
- Step 1
Feasibility Review
Setback, FAR, and HPOZ checks before design starts.
- Step 2
Design & Engineering
Plans, structural calcs, and material selections.
- Step 3
Permits
LADBS submittal, corrections, and final approval.
- Step 4
Build
Foundation, framing, mechanicals, exterior, and interior finishes.
- Step 5
Inspection & Closeout
Final city inspection, walk-through, and warranty.
The Marc's Construction difference on every room additions project.
We don't subcontract accountability. Every project gets a dedicated manager, transparent pricing, and a written workmanship warranty.
- Deep LADBS and HPOZ experience
- In-house structural coordination
- Exterior color and texture matching specialists
- Honest feasibility opinions before you spend on design
Recent room additions work across Los Angeles.
Let's plan your room additions project.
Free on-site visit. Written estimate within one business day. Trusted by local Los Angeles homeowners.
Answers about room additions.
Don't see your question? Call us — we're happy to walk you through anything.
Permit timelines vary, but design-to-completion typically runs 6–12 months including permitting.
Often paired with room additions.
Get a free room additions estimate.
Tell us about your project. We typically respond within one business day to schedule your complimentary consultation.