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Windows & Doors

Window & Door Replacement in Mechanicsville, Maryland

New patio doors, entry doors, and replacement windows in Mechanicsville, MD. New openings permitted and inspected. MHIC #118450. Call 240-794-2274. Veterans & active duty military: 10% off, up to $1,000. Mention it at your estimate.

Window & Door Brands We Install — Click to Explore Products

Mechanicsville anchors the northern end of St. Mary's County, and the county names it as one of its northern growth areas. Davis Construction & Home Improvement has replaced windows and doors throughout Mechanicsville, and northern St. Mary's is part of our regular territory.

We're MHIC-licensed (#118450), with 13 years in business and 30 years of experience. Call 240-794-2274 for a free estimate.

Adding a patio door

Turning a window into a door — a sliding or French patio door out to a deck or back yard — changes how a house lives: easier access to the yard, more light, and a real connection between the kitchen or family room and the outdoors.

It's also a bigger job than a straight replacement. The wall below the window comes out, and if the opening gets wider, it needs a new header sized to carry the load above. That's structural, so it goes through a building permit from the St. Mary's County Department of Land Use & Growth Management, and building inspections are done by MDIA. We frame it, file it, schedule the inspection, and finish the siding and interior trim around the new door.

If there's no deck yet on the other side of that door, we build decks too.

Straight replacements

If you're keeping the openings as they are, replacement windows and a new front door are straightforward. Most window replacement projects are completed in 1–2 days.

What we install in Mechanicsville

  • Sliding and French patio doors
  • Entry door replacement
  • Replacement windows
  • New construction windows
  • Storm doors and screen doors
  • Garage doors and openers
  • Door and window trim work

We install Andersen windows and Supreme Aluminum products, and order doors, hardware, and trim through Build.com.

Why Mechanicsville homeowners call us

  • New openings framed, permitted, and inspected.
  • We come to you — northern St. Mary's is regular territory.
  • Licensed: MHIC #118450, 13 years in business, 30 years of experience.
  • Siding and trim finished around every new opening.
  • Free estimates.

Windows and doors near Mechanicsville

See our windows and doors in St. Mary's County page, or every area we serve.

Frequently Asked Questions

Yes. The opening is cut down, and widened with a new header if needed. It goes through a county building permit.
Yes. We build decks and screened porches, so the door and the deck can be one project.
Yes — we work throughout northern St. Mary's County.

Ready to start? Call 240-794-2274 or book your free estimate online.

Davis Construction & Home Improvement — Serving Saint Mary's, Charles, and Calvert County, Maryland.

Get Your Free Estimate Today

No pressure. No runarounds. Just honest work by a licensed Southern Maryland remodeling team. Veterans & active duty military: 10% off, up to $1,000. Mention it at your estimate.

Licensed & Insured  |  MHIC #118450  |  Same-Day Response
Maryland Home Improvement Commission (MHIC) License #118450 · Licensed & Insured