Windows and Doors
Replacement & Installation
South Bay | Los Angeles | Orange County
Schedule a Quote
Schedule a Quote
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A licensed general contractor for your windows and doors
Most window projects in the South Bay are handled by dealers and specialty installers who set a new unit into the existing opening. That approach works well when the frame and the wall around it are sound. Many homes near the coast need more than that, and having a general contractor on the project changes the result.
Bay Cities repairs rot and water damage around the opening, replaces frames in full, handles the structural work when an opening changes, and coordinates windows and doors that are part of a larger remodel. You work with one licensed contractor for the whole project, from the first measurement to the final install.
What we install
Windows and doors in the materials and styles that fit your home and budget.
Windows
Vinyl windows $
Energy-efficient, low-maintenance vinyl windows built by a Southern California manufacturer, with short lead times and strong coastal durability.
Wood windows $$
Premium wood windows from Pella, where we are an authorized dealer, in a full range of styles and finishes for a refined interior.
Aluminum-clad windows $$$
A wood interior paired with a durable exterior shell that holds up to sun and salt air with less upkeep than solid wood.
Doors
Patio and sliding doors
Dual-pane, Low-E sliding and patio doors that seal and perform far better than older single-pane units.
French doors
Swinging French doors for a traditional look, including replacements for an existing sliding door.
Entry doors
Secure, well-sealed entry doors at the largest single opening in most homes.
Multi-slide and moving glass walls
Wide opening systems that connect a living space to the yard, with the structural work and permits handled.
When a window project needs a general contractor
These are the projects where a licensed general contractor makes the difference, and where a window shop usually stops.
Rot or water damage
When the framing around an opening has rot or water damage, we repair the wood and the waterproofing before the new window goes in, so the problem does not get sealed behind a new unit.
Structural changes
Turning a window into a door or widening an opening changes the structure of the wall and requires a correctly sized header, a permit, and an inspection.
Older coastal homes
Once original aluminum or single-pane windows come out, the framing and stucco around them are often in worse shape than they looked. We handle those repairs in the same project.
Remodels and additions
When windows and doors are part of a kitchen remodel, a full home remodel, or an addition, one contractor coordinates the whole job and keeps the schedule in one place.
Full-frame and pocket installation
There are two ways to install a replacement window, and the right one depends on the condition of the existing frame. Bay Cities offers both.
The new window is set inside the existing frame, which is faster and lower in cost.
The old window is removed down to the opening, and the install includes new flashing, new trim, and stucco repair.
How it works
Request an Estimate
Submit a request through the website.
Zoom Call
We learn about the project and confirm it is a good fit.
Property Visit and Measurement
We assess the work and take measurements.
Scope and Proposal
We scope the project and send a written proposal.
Installation
Our in-house crew installs your windows and doors.
Building-wide window and door replacement
Bay Cities works with HOA boards and property managers on window and door replacement across multi-unit and multi-building properties. We plan the schedule around board approvals and owner notifications, match the existing building elevations and architectural guidelines, and stage the work around residents so the disruption stays manageable. One licensed general contractor scopes, permits, and installs the whole project, and we provide a proposal for the full property rather than pricing one unit at a time.
Why homeowners and managers choose Bay Cities Construction
Licensed general contractor
CSLB #842614, with the license and experience to handle structural work and permits, not only installation.
More than 20 years in the South Bay
Two decades serving the South Bay, greater Los Angeles, and Orange County.
Family owned and operated
A family business that answers directly to the homeowners and boards we work for.
Team of Pro's
Your windows and doors are installed by our team of experts, quality stays consistent.
Full-frame installs with stucco and trim repair
We replace the frame in full and repair the trim and stucco around it when a project calls for it.
Waterproofing and rot repair expertise
Waterproofing is core to our work, so damage around an opening gets repaired before the new unit goes in.
Frequently Asked Questions
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Do I need a general contractor or a window company to replace my windows?
For a straight like-for-like replacement where the frame and wall are sound, a window company can do the job, and so can we. You need a general contractor when the project involves the wall around the opening, such as rot or water damage in the framing, changing the size of an opening, or converting a window into a door. Those jobs require structural work and permits that a general contractor is licensed to handle.
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Can you replace a window that has water damage or dry rot around it?
Yes. When there is rot or water damage in the framing around an opening, we repair the damaged wood and the waterproofing before the new window goes in. Waterproofing and framing repair is core to the work we do, so we handle the damage and the installation as one project.
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Can you turn a window into a door or make an opening bigger?
Yes. Changing an opening affects the structure of the wall, so the work requires a correctly sized header, a city permit, and an inspection. As a licensed general contractor, we are set up to handle the structural change and the permit along with the door or window installation.
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What is the difference between full-frame and pocket installation?
Pocket installation sets the new window inside the existing frame, which is faster and lower in cost and works when the frame and wall are sound. Full-frame installation removes the old window down to the opening and includes new flashing, trim, and stucco repair, which is the right method when the frame is damaged or there is water intrusion. We offer both.
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Are there any window tax credits in California in 2026?
The federal Section 25C window tax credit expired on December 31, 2025, so there is no federal window tax credit for projects installed in 2026. Windows installed in 2025 can still be claimed on your 2025 tax return. Some state, utility, and insurance programs may still offer support depending on your city and utility, and we can point you to the ones that apply to your home.
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Do you work with HOAs and property managers?
Yes. We work with HOA boards and property managers on building-wide window and door replacement, and we plan the project around board approvals, architectural guidelines, and residents living in the units. We provide a proposal for the full property rather than pricing one unit at a time.
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What's Next?
Still have questions about your Bay Cities Construction adventure. Then keep learning more.
