Windows in Southern California & the Bay Area
Quick answer
Window replacement in Southern California typically costs about $700–$1,500 per window installed, or roughly $10,000–$28,000 for a whole house of about 10 windows. Frame material, size, glass package and retrofit versus full-frame installation drive the price.
5.0 from 47 reviews on Houzz · CSLB Lic. #1040337 · Class B
What our windows service includes
Energy-efficient window and sliding-door replacement that brings in light and keeps out heat and noise.
MDG Builders sells, designs and manages your project; the work is performed by licensed, insured subcontractors.
- Window replacement
- Sliding and folding doors
- Retrofit and new-construction installs
- Trim and stucco patching
- Disposal of old units
Windows cost in California
| Scope | Typical installed range |
|---|---|
| Per window, installed | $700 – $1,500 |
| Whole house, about 10 windows | $10,000 – $28,000 |
Cost factors
- Number and size of windows
- Frame material (vinyl, fiberglass, aluminum, wood)
- Retrofit versus full-frame installation
- Glass package and energy ratings
- Custom shapes and sliding doors
- Stucco and trim repair
How long it takes
Custom windows are ordered first, often several weeks; installation itself is usually quick per window.
Permits
Window replacement often requires a permit and must meet California energy code requirements.
| Vinyl | Fiberglass | Wood | |
|---|---|---|---|
| Relative cost | Lowest | Mid | Highest |
| Maintenance | Low | Low | Higher |
| Strength / stability | Good | Very good | Good |
How your windows project works
Consultation
Call (888) 666-8224 or send the form to share goals, timing and budget range.
Site visit
We measure, assess existing conditions and discuss options in person.
Written proposal
You receive a written scope and price; typical ranges are a guide, not a quote.
Permits and scheduling
We coordinate permits where required and schedule licensed, insured subcontractors.
Construction and walkthrough
Our team manages the work through final inspection and walkthrough.
What clients say about MDG Builders
Glad that we went with My Design Guide for our project that included: Windows and sliding door replacement. Emil gave us the best quote out of 4 vendors that we talked too; Others quoted higher and for double-pane windows only. Since the windows are custom ordered, we were promised an 8-week time frame from contract to installation and it was on point. The installers were friendly and professional and they cleaned their workspace thoroughly after each window. I am thankful that they were willing to work around our jumpy toddlers. They also kept the NSFR labels carefully. The follow-ups were great too. One of the installers came back less than a week after installation was completed to touch up old screw holes and cracked surrounding walls. We couldn't ask for a better experience. If you are looking for a reliable company and people to work with, go with My Design Guide.
My Design Guide Inc recently installed a new roof and new windows for our house, and we couldn't have been happier! We originally contracted them to put in new windows, but when we suddenly found ourselves in need of a roof fast, we talked with David, he and his team sprinted into action to accommodate our situation so we could have it done within a week. Throughout the two installation jobs, David was responsive, attentive, and very thorough in explaining the process to us. He was also upfront and honest on his pricing, no surprises. We would definitely work with them again on our future home improvement needs.
From the beginning, we had a great experience with the team at My Design Guide Inc! We wanted to upgrade our patio but we weren't creative enough to know what to do. David was full of great suggestions to make the patio a true conversation piece while still honoring our budget and we couldn't be happier with the result! The quality of work and professionalism is the best I have seen in this business, and they really do take pride in their work. David communicated with us throughout the process and was meticulous in ensuring our yard was still taken care of during the construction period. We have received so many compliments on our new paver patio, fire pit with seating, and built-in outdoor counter. I highly recommend going with them. I would go with them again a hundred times over!
Verbatim Houzz reviews of MDG Builders; some describe projects other than windows.
Windows questions, answered
Related services:
Cost guides:
How much does window replacement cost in Southern California?
Typically $700–$1,500 per window installed, or about $10,000–$28,000 for roughly 10 windows.
Retrofit or full-frame windows?
Retrofit is less invasive; full-frame suits damaged frames or major remodels.
How long does window replacement take?
Ordering custom windows takes weeks; installation is usually quick per window.
Do I need a permit to replace windows?
Often yes, to confirm energy-code compliance.
Which window frame is best?
Vinyl is cost-effective; fiberglass is strong and stable; wood is classic but needs more care.
Do new windows reduce noise?
Double- and triple-pane glass and good installation reduce outside noise.
Can you replace sliding doors too?
Yes, sliding and folding doors can be included.
Who actually does the work on my project?
MDG Builders (My Design Guide Inc, CSLB #1040337, Class B) sells, plans and manages your project from start to finish. The hands-on work is performed by licensed, insured subcontractors in each trade, scheduled and supervised by our team so you have one point of contact.
Is MDG Builders licensed in California?
Yes. My Design Guide Inc holds California Contractors State License Board license #1040337, Class B (General Building). You can look up any license on the CSLB website.
What areas do you serve?
Southern California from Lancaster to San Diego, plus the San Francisco Bay Area.
How do I get an estimate?
Call (888) 666-8224, email info@mydesignguide.com or send the estimate form. We discuss your goals, schedule a site visit and send a written proposal. Office hours are Monday to Thursday 8 AM to 5 PM and Friday 8 AM to 2 PM.
Planning a windows project?
Free estimates. A real person answers — call or send the form and we'll follow up to schedule a site visit.
MDG Builders at a glance
- Who
- My Design Guide Inc dba MDG Builders, a licensed general contractor that sells, designs and manages remodeling and construction projects
- License
- CSLB #1040337, Class B (General Building)
- Where
- Based in Tarzana, CA; serving Southern California (Lancaster to San Diego) and the San Francisco Bay Area
- Phone & email
- (888) 666-8224 · info@mydesignguide.com
- Hours
- Mon–Thu 8:00 AM–5:00 PM · Fri 8:00 AM–2:00 PM · Sat–Sun closed
- Rating
- 5.0 from 47 reviews on Houzz