About Orange County Window Replacement
★★★★★ 5.0 on Google · 22 reviewsOrange County Window Replacement is a window and door replacement company based at 27766 Santa Margarita Pkwy, Mission Viejo, CA 92691. We help Orange County homeowners replace old, inefficient windows and doors with energy-efficient, code-compliant products — installed cleanly and quoted honestly.
- Free in-home measure & written quote
- Title 24 energy-code compliant windows & doors
- Retrofit & full-frame installation
- Open Mon–Sat 9:00 AM – 5:00 PM
What we do
We measure, supply and install replacement windows, new window styles, energy-efficient and soundproof glass, front entry doors and patio doors for single-family homes, townhomes and condos across Orange County.
How we work
Every project starts with a free in-home estimate. We measure each opening, check the condition of your frames and walls, explain your options in plain language and leave you with a written quote. There's no pressure and no obligation.
Where we work
We're based in Mission Viejo and serve all 34 cities in Orange County plus Ladera Ranch, Coto de Caza, Las Flores and Trabuco Canyon. See all service areas.

Contact
Orange County Window Replacement
27766 Santa Margarita Pkwy, Mission Viejo, CA 92691
(949) 867-3079
Mon–Sat 9:00 AM – 5:00 PM
Get directions
How Our Window & Door Replacement Works
- 1
Free in-home estimate
We measure every opening, look at the frames and walls, and walk you through styles, materials and glass options. No pressure, written quote.
- 2
Custom order
Your windows and doors are built to the exact measurements — usually 3–6 weeks.
- 3
Professional installation
Our crew protects your floors and furniture, removes the old units, installs and seals the new ones, and hauls away the debris.
- 4
Final walkthrough
We test every window and door with you, explain care and warranty, and make sure you're happy before we leave.
Ready for new windows or doors?
Free in-home estimates across Orange County · Mon–Sat 9:00 AM – 5:00 PM