More space, without moving.

Adding a bedroom, primary suite, family room, or second story is often half the cost of buying a bigger house, and you keep your neighborhood, your school, and your trees.

What's included

What a room addition actually involves

An addition isn't just a new room, it has to integrate with the existing house. Roofline, foundation, electrical load, plumbing, every system gets reviewed.

Planning and Design

Architectural drawings, lot setbacks, height limits. We ensure your addition fits the lot, the code, and the look of the home.

Foundation

New footings, slab, or stem wall. Soil reports if needed. Tied properly into the existing structure for seismic safety.

Framing and Structure

Engineered framing, new roof tie-in, beam pockets. We frame it like a new build, not a tacked-on box.

Seamless Integration

Matching exterior, matching flooring transitions, matching trim details. From the curb, it should look like it was always there.

Permits and Approvals

We handle the city, HOA reviews, and any coastal or hillside permits. Timeline transparency throughout.

ROI and Resale

Bedrooms and primary suites have the highest return of any addition. We design with both your enjoyment and your equity in mind.

Our process

How a room additions actually goes.

From first sketch to final walkthrough, here's exactly what to expect when you work with us.

01

Site walk and feasibility

We measure, check setbacks, lot coverage, and existing systems. Some additions are easy; some need creativity.

02

Design and plans

Architectural plans drawn, structural calcs run, 3D renderings to show you exactly how it integrates.

03

Permits

We submit, respond to city corrections, and follow it through to approval. You don't deal with the city.

04

Foundation and framing

Excavation, footings, framing, roof tie-in, weatherproof shell. The biggest visible milestone.

05

Finish and integration

Drywall, flooring, paint, trim, matching the existing home where it meets, and clean transitions throughout.

More of our work

You may also be interested in

Let's talk

Ready to start your room additions?

Free, no-pressure consultation within 72 hours. We'll come to your home, talk through what's possible, and give you a real timeline and budget.

Or call us directly
(800) 209-0031

Free Consultation

We'll get back to you within one business day.

Thanks, your project request is in our hands.

We've received your form and will be in touch within 24 working hours to talk about your project.

In a hurry? Call us anytime at (800) 209-0031

Trust and transparency

Why our clients keep referring us.

Hear from past homeowners, and find answers to the questions we hear most often.

★★★★★
A to Z did a fantastic job with our kitchen remodel. We have a 100-year-old Spanish style home and wanted to keep a lot of the original elements — Zack and Rami really listened and helped us figure out how to get it just right. Couldn't be happier with our new kitchen.
Tess L.Kitchen Remodel · Los Angeles · Yelp
★★★★★
A to Z built a beautiful ADU in our backyard. The project was on budget and the results were better than we had hoped. Rami and Zack were a consistent and communicative presence at the job site. We looked at 10 firms in total and are so pleased we chose A to Z.
Robert R.ADU Build · Sherman Oaks · Yelp
★★★★★
A to Z, lead by Rami and Zach, are the absolute best. My bathroom remodel was complicated and they worked meticulously to make our vision a reality. They communicated well, showed up on time, left the work site clean every day. No problem was too hard and the work they did was beautiful.
Abby H.Bathroom Remodel · Agoura Hills · Yelp
★★★★★
We interviewed several contractors and hired A to Z. Couldn't be more pleased with the results! Two bathrooms, new lighting, a new roof, HVAC, windows, flooring, and paint. From the start they gave us clear and honest advice, and the work speaks for itself. Highly recommended!!
Justin M.Full Home Renovation · Woodland Hills · Yelp
★★★★★
I have used A to Z's services twice. Most recently they rebuilt my home after a house fire. The estimates were reasonable and thorough. Many of the skilled workers on the A to Z team have been with the company for years and it's clear they take pride in their work. Their estimates are honest.
Natalie PanaiaHome Rebuild · Local Guide · Google
★★★★★
Zack, Rami and their crew did a fantastic job! Full renovation for two 1950's bathrooms that came out beautifully. Reasonable price especially in comparison to the other company I contacted. Trustworthy company with frequent updates from Zack who also provided invaluable input and suggestions. Highly recommend!
Karen KuratsuDual Bathroom Remodel · Google
Are you licensed and insured? +
Yes. We're licensed (#988824) for everything we list in our services. We carry general liability insurance, workers compensation, and commercial auto.
What's your service area? +
We service the greater Los Angeles area. The vast majority of our projects are in the San Fernando Valley, Los Angeles, Eagle Rock, Santa Monica, Glendale, Burbank, Pasadena, Altadena, Beverly Hills, Malibu, Thousand Oaks, Simi Valley, Venice, and all surrounding areas.
How long have you been in business? +
AtoZ Construction Inc. has been founded for over 10 years. Rami, the owner, has been in construction for over 30 years. It's his passion to see the smile on our customers' faces when the project is complete and the space is fully transformed.
Are you really a family-owned business? +
Yes. The owner is Rami Zilberberg, a general contractor for 30+ years. His son Zack joined the company about 5 years ago, and they manage every aspect of the business together. Both Rami and Zack will be on the job site every day, communicating with each other and with you.
Do you use sub-contractors? +
We have our own team of employees for every trade. We rarely use sub-contractors, and when we do, they're people we've worked with for 10+ years.
How fast can you come out for a consultation? +
Our goal is to be on-site for a free consultation either the next day or within 72 hours, depending on geographic location. The meeting usually takes 45 minutes to an hour. We bring samples, an iPad with project photos, and the answers to all your questions.
Do you offer financing? +
Yes. We partner with HFS Financial for credit-based loans. We can also help with secured loans like HELOC, refinance, and reverse mortgage options. Pre-qualify here →
How does payment work? +
We charge an initial deposit of no more than $1,000. After that, the project is broken into stage payments per task, for example, payment after demolition, payment after rough electrical, etc. Payments can be made via check, Zelle, cash, or credit card.
What if you find unexpected issues mid-project? +
With any remodel, you can't see everything until walls are open. We over-communicate every exception we find, involve you in the solution, and discuss any change before taking action, agreed upon by you in writing first.