Room Additions in Glendale
68.8% of Glendale housing units were built before 1980; the median year built is 1966 (U.S. Census ACS 2020–2024 5-year estimates).
Glendale at a glance
- Housing units built before 1980 (City of Glendale, 2020–2024)
- 68.8%
- Median year structure built (City of Glendale, 2020–2024)
- 1966
- Owner-occupied share of occupied units (City of Glendale, 2020–2024)
- 35.2%
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates · data as of
- Numbers from US Census public records
- Up to three local contractors, never a long list
- Free, no obligation
A useful first step
Before you start in Glendale
Start with the city’s Residential Room Addition Permit.
What to prepare
Use that checklist to prepare your application. Confirm the required permits against your exact scope before work begins; replacing finishes and changing a layout may follow different paths.
Glendale permit guidance · Checked
What do permits say a room addition costs?
From City of LA building permits, last 12 months. Not a contract price. How we calculate this
Declared values on City of Los Angeles building permits, last 12 months. The dataset covers the City of Los Angeles only, so treat it as a regional reference for Glendale. A declared value is what the permit states, not your contract price. How we calculate this.
Source: LA Department of Building and Safety, Building Permits Issued 2020 to Present (data.lacity.org), permits on one- and two-family homes issued to ; fire rebuilds excluded. ZIP medians need 20+ permits.
Glendale housing facts from the U.S. Census
Planning your project
What Glendale's homes mean for your room addition
68.8% of Glendale housing units were built before 1980, and the median year built is 1966 (U.S. Census ACS 2020–2024). Most projects here touch an older house, so plan for checks before framing starts.
Owner-occupied homes make up 35.2% of occupied units, so many Glendale homes are rented. If you rent out your property, plan the work around your tenants, keep them informed about the schedule, and think about how the addition affects the property.
The median value of owner-occupied homes is $1,102,300 (2020–2024). Use that figure only as a general guide: keep spending in proportion to what the home is worth, and talk through budget and resale goals with your builder.
Ask the builder about foundation bolting and bracing, electrical panel capacity, lead-based paint testing for homes built before 1978, possible asbestos where old walls are opened, and matching an older roof and exterior. These are things to check, not certainties for every house.
The typical path for a Glendale room addition
The typical path for a Glendale room addition
Check what your lot allows
Confirm setbacks, height, and lot coverage with the City of Glendale before you design. Ask whether your address has any special rules.
Design and engineering
Plan the room layout, the roof tie-in, and any structural changes. Ask for a plan that shows how new framing connects to the existing house.
Test older materials first
For older homes, ask about testing for lead-based paint before walls are opened, and about asbestos where old materials will be disturbed.
Plan check and permit
Submit drawings for city review. Expect comments and revisions, and do not assume approval will be quick.
Foundation and framing with inspections
Check the existing foundation, bolting, and bracing before new framing is tied in. Schedule the inspections the city requires at each stage.
Roofing, mechanical, electrical, and plumbing rough-in
Confirm electrical panel capacity and the path for new circuits. Older homes may need updated wiring. Inspections happen before walls are closed.
Finishes and final inspection
Once rough-in passes, close the walls, add finishes, and request the final inspection. Keep the permit and sign-off papers with your home records.
Questions about room additions in Glendale
Why does the age of Glendale homes matter for a room addition?
Most of Glendale's housing is older. 68.8% of housing units were built before 1980, and the median year built is 1966. An older house can hide issues with its foundation, wiring, or old materials. Ask your builder what they will check before framing starts. These are things to check, not certainties for every house.
What does the 35.2% owner-occupied share mean if I rent out my home?
Owner-occupied homes make up 35.2% of occupied housing units in Glendale, so many homes are rented. If you rent out your property, think about how the addition affects rental income and your tenants. Keep tenants informed about the schedule and plan noisy work around their needs.
How should I compare my budget with my home's value?
The median value of owner-occupied homes in Glendale is $1,102,300 (2020–2024 Census estimates). This is a general guide only. Many owners plan spending in proportion to what their home is worth, and they discuss resale goals with their builder. This site does not promise any return on a project.
Is a room addition a good way to add space?
A room addition adds usable floor space without moving. It usually needs a permit, design work, and inspections. Ask the builder how the new room connects to the existing structure, roof, and utilities.
How do I check a contractor's license status?
You can check a contractor's license status with the CSLB (Contractors State License Board) before you sign anything. Ask the builder for their license number and confirm it on the CSLB site.
Recent work by a contractor in our network
Photos from the contractor's own projects, used with permission. Captions name the type of work.
Whole-home remodel, exterior 
Kitchen, whole-home remodel 
Addition / ADU interior 
Addition / ADU interior 
Whole-home remodel 
Whole-home remodel
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