5 window replacement contractors Based in Largo
Window replacement contractors in Largo range from long-standing shops to 2 newer entrants licensed in the last two years. Every name below comes from the Florida license record, not a paid submission.
Licenses checked · Florida Department of Business and Professional Regulation
2AIECC climate zone · ENERGY STAR Southern zone
What Largo's climate means for your window spec
Tampa-St. Petersburg-Clearwater, FL piles up about 447 heating degree days in a normal year, against 3,701 on the cooling side of the ledger.
That's the load an ENERGY STAR-rated window in the Southern zone is built to handle.
A contractor pulled from Largo's license record should be able to name the right U-factor for zone 2A before they ever measure an opening.
Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 5.3 mi away.
2.3median years licensed
The license record behind these listings
The median window license active in Largo has been on the books for 2.3 years.
A small slice, 0 of them, sit inside a 90-day window for renewal as of our last check, which is ordinary license-cycle timing rather than a mark against the business.
Match the number on any Largo listing here against Florida's own lookup before you pick up the phone.
Data: Florida Department of Business and Professional Regulation license records, checked 2026-09-30.
Window contractors licensed to work in Largo, FL
Listed A to Z by business name. No listed business paid for placement or position.
| Business | Category | License class | License no. | Status | Effective | Expires | ZIP | Official record |
|---|---|---|---|---|---|---|---|---|
| .The Window Depot Of Tampa Bay LLC | Window and glass contractor | Certified Building Contractor | CBC1270503 | Active | Jul 1, 2026 | Aug 31, 2028 | 33774 | Verify license |
| Affordable Windows & Doors Of Tampabay | Window and glass contractor | Certified Building Contractor | CBC1263807 | Active | Apr 10, 2020 | Aug 31, 2028 | 33771 | Verify license |
| Steve's Windows & Doors | Window and glass contractor | Certified General Contractor | CGC1540931 | Active | May 11, 2026 | Aug 31, 2028 | 33770 | Verify license |
| Weather Strong Windows LLC | Window and glass contractor | Certified Building Contractor | CBC1267896 | Active | Jun 17, 2024 | Aug 31, 2028 | 33774 | Verify license |
| Windows By Keith INC | Window and glass contractor | Certified Residential Contractor | CRC1328626 | Active | Apr 21, 2006 | Aug 31, 2028 | 33771 | Verify license |
Questions to ask before you sign
- How long have you held your state license, and can I see the number?
- Is this a full-frame replacement or an insert into my existing frame, and why that one?
- Who pulls the permit, and does this change trigger an egress check on a bedroom window?
- What flashing and sill pan will you use, and in what order do you install them?
- If my home was built before 1978, is your crew lead-safe certified for this job?
- What's the completion date in writing, and what happens if the schedule slips?