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Windows & Doors

Window & Door Replacement in Leonardtown, Maryland

Replacement windows, entry doors, and patio doors in Leonardtown, MD. Town and county permits checked first. MHIC #118450. Free estimate: 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

Leonardtown is the county seat of St. Mary's County and its only incorporated town, with its own zoning and building permits inside town limits. Davis Construction & Home Improvement has replaced windows and doors throughout Leonardtown, from a single drafty window to whole-house packages and new front entries.

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

Two sets of rules inside town limits

Leonardtown's zoning code says no building may be altered without first getting a building permit from the town, and the town arranges its inspections through a contracted inspection agency. That is on top of St. Mary's County's own process through the Department of Land Use & Growth Management. So before we order a single window for a house inside the town line, we check what the town needs for your job.

A Leonardtown mailing address doesn't always mean the house is inside town limits. Outside the line, only the county process applies. We confirm which side you're on first.

Replacing vs. enlarging an opening

Setting a new window or door into the opening that's already there is the simplest version of this job. Making an opening bigger, adding a patio door where there's a wall now, or cutting in an egress window for a basement bedroom changes the structure of the wall, and that's permit work. We tell you at the estimate which kind of job yours is.

What we install in Leonardtown

  • Replacement windows
  • Entry door replacement
  • Sliding and French patio doors
  • Storm doors and screen doors
  • Egress windows
  • Door and window trim work
  • Energy-efficient glass upgrades

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

Why Leonardtown homeowners call us

  • Town and county rules checked before we order.
  • Close by — we're based in California, MD.
  • Licensed: MHIC #118450, 13 years in business, 30 years of experience.
  • Measuring, removal, install, and trim handled by one crew.
  • Free estimates.

Windows and doors near Leonardtown

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

Frequently Asked Questions

The town's code requires a building permit before a building is altered. We check your specific job with the town before work starts.
Most window replacement projects are completed in 1–2 days. We seal each opening before moving to the next.
Yes. Widening an opening is structural work, so it goes through the permit process first.

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