Modern kitchen with new flooring
New Construction · Los Angeles & The Valley

Home Additions in Los Angeles

Need more space but love your neighborhood? A home addition lets you stay where you are and add the bedroom, primary suite, family room or second story you need. Girl Flip Construction is a licensed, women-led general contractor (California license #1091248) that designs and builds room additions across Los Angeles and the San Fernando Valley, including Tarzana, Sherman Oaks, Encino, Calabasas and Agoura Hills.

5.0 average rating · Licensed CA contractor #1091248

Our Approach

Home Additions, done the Girl Flip way

The best additions feel original to the house. We match structure, roofline, and finish so your new space blends in outside and opens things up inside.

What's Included

What we handle

01

Room Additions

Adding square footage that fits your home.

02

Second Stories

Building up where building out is not an option.

03

Seamless Match

Matching the existing structure and finish.

04

Structural Work

The engineering and framing an addition needs.

05

Permits & Inspections

Coordinating the approvals additions require.

06

Interior Finish

Finishing the new space to match the home.

Types of Additions

Types of Home Additions We Build

  • Room addition (bump-out): Extends the footprint of the house for a new bedroom, bathroom, office or family room.
  • Second-story addition: Adds a whole new floor without taking yard space. Needs structural engineering.
  • Primary suite addition: A new bedroom, bathroom and closet, often the most requested addition.
  • Kitchen expansion: Pushes the kitchen outward or opens it to the family room.
  • Garage addition or conversion: Turns the garage into living space or an ADU. See our garage conversion page.
Cost

How Much Does a Home Addition Cost in Los Angeles?

The cost of a home addition in Los Angeles depends on the type of addition, site access and your finish selections. Second-story additions cost more because of structural work. Our pricing includes labor and construction materials only. We give you a written estimate after we see the house and the lot.

Before You Build

What to Know Before You Build an Addition

  • Zoning and setbacks: Your lot limits how far you can build toward the property lines.
  • Size limits: Many Los Angeles neighborhoods limit total floor area compared to lot size.
  • Hillside and design rules: Some areas, especially hillside lots, have extra review.
  • Structure and utilities: A good addition is planned around your existing foundation, roof, electrical panel and plumbing.
  • Permits: You will need plans, plan check and inspections. We handle all of it.
Our Process

Our Home Addition Process

  1. Free consult and site visit
  2. Design and drawings
  3. Engineering and permits
  4. Construction, from foundation to finish
  5. Inspections and final walkthrough
Recent Work

See our work

Plan Your Project

Helpful guides

Additions near you

Good Questions

Home Additions FAQs

Will an addition match my existing home?
That is the goal. We match rooflines, materials, and finishes so the addition looks original, not bolted on.
Do additions require permits?
Yes, and we coordinate the permitting and inspections for you.
Can you add a second story?
In many cases, yes. We will assess your home's structure and let you know what is possible.
How long does a home addition take?
Design and permits come first, then construction. A second-story addition takes longer than a ground-level room. We share a written schedule before we start.
Is it cheaper to add on or to move?
In Los Angeles, adding on is often less expensive than buying a larger home once you count purchase price, closing costs, taxes and moving. We can run the numbers with you.
Can I live in my house during an addition?
Usually yes for ground-level additions. For second-story additions, many families move out for several months.
Do you handle design and engineering?
Yes. We work with architects, designers and structural engineers and manage them for you.
Guides

Related guides

Read more before you plan your project.

Let's flip your space!

Tell us about your project and we'll set up a discovery call to talk it through. Serving LA and the Valley.

• 7751 Alabama Ave #11, Canoga Park, CA 91304

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Call (818) 303-4083Free Discovery Call