Room Additions in Glendale, CA from American Reliable Construction & Remodeling, a licensed general contractor (CSLB #1155602) headquartered on Ventura Boulevard in Sherman Oaks. We design, permit and build the project, with permits handled and one coordinator on site. For a free in-home estimate and a written, itemized quote, call (877) 702-6180.
CSLB #1155602 · Licensed, bonded & insured · BBB Accredited · A- Rating · 5.0 on Google (26 reviews)
Glendale additions split along the same line as the city itself. In the flat neighborhoods — Rossmoyne, Adams Hill and the streets around downtown — 1920s–1950s traditional homes usually add a primary suite or family room at the rear on a straightforward foundation. In the Verdugo foothills and the hillside streets above them, additions are engineered projects: slope, retaining walls, drainage and hillside design standards shape the design before the floor plan does.
Glendale is its own city with its own zoning code. Setbacks, height limits and lot-coverage rules set the envelope for an addition, and hillside parcels carry additional design and grading standards. Some older properties also fall within historic districts that review exterior changes. We check every applicable layer for your address at the feasibility visit.
American Reliable Construction & Remodeling designs, permits and builds additions in Glendale from our Sherman Oaks office. One project coordinator runs design, structural engineering, City of Glendale plan check and construction under CSLB #1155602, and the estimate you sign is the same itemized document the crews build from — foundation, framing, roofing, systems and finishes each on their own line. Warranty available. Call for details.
Foundation and soil, structural work, roofline, utility capacity and finish level move the price.
Every home is different — your written estimate is itemized after a free in-home visit.
Read the Sherman Oaks room addition guideFeasibility, design and engineering come first, then City of Glendale plan check — whose timing varies; any historic review is scheduled in parallel. Construction of a ground-floor addition runs several months once started, with hillside work taking longer for foundation and site stages. You receive a written, phased schedule before demolition.
“We recently completed a room addition along with a full roof customization, and the results are amazing. The team was professional, organized, and easy to communicate with throughout the entire project. The new room looks like it has always been part of the house, and the new roof was installed perfectly. Highly recommend their services!”
“I didn't think a bathroom could make that much of a difference until this one was finished. We kept the design pretty timeless with a walk in shower, porcelain tile, and a wood vanity, and it completely changed the feel of the space. It feels cleaner, more open, and just a lot more enjoyable to use every day.”
“Great experience with American Reliable Construction & Remodeling. They helped us with our ADU from start to finish and made the whole process smooth and stress-free. The team was professional, responsive, and delivered quality work. Highly recommend!”
We'll visit the property, answer the permit and layout questions, and put a written, itemized estimate in your hands — free, no obligation.
Published planning ranges are $350–$600 per square foot for a ground-floor addition and $500–$800 per square foot for a second-story addition. Foundation and soil, structural work, roofline, utility capacity and finish level move the price. Every home is different — your written estimate is itemized after a free in-home visit.
Tell us about your room additions project in Glendale. We'll schedule an in-home visit and put a detailed written estimate in your hands — no obligation.
Two quick steps. We typically respond within one business day.
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