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How much does window replacement cost in Frederick, MD?

Regionally adjustedUpdated Prices checked October 20262 sources

In Frederick, window replacement typically runs $3,370 to $11,600, about $7,200 for a typical job. That is the US national range from HomeAdvisor ($3,436 to $11,838) adjusted by the South Atlantic factor of 0.98 from the 2025 Cost vs. Value Report. Checked October 2026.

Adjusted for the South Atlantic region

Low
$3,370
Typical
$7,200
High
$11,600

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Window replacement cost in Frederick, MD

Each row says exactly what the figures are and where they come from.

Window replacement cost in Frederick, MD
EstimateLowTypicalHighBasisChecked
South Atlantic estimate$3,370$7,200$11,600National range × 0.98: the South Atlantic / national cost ratio for “Window Replacement | Vinyl” ($21,629 vs $22,073) in the 2025 Cost vs. Value ReportOctober 2026
US national range$3,436$7,348$11,838Per project (several windows): typical range of customer-reported projects (HomeAdvisor)October 2026

What drives the cost of window replacement

  1. Number of windows

    Per-window prices drop on larger projects.

  2. Window size and type

    Picture, bay and skylight windows cost more than standard double-hung.

  3. Glass

    Double or triple panes, Low-E coatings and gas fill add cost.

  4. Frame material and brand

    Vinyl, wood, fiberglass and aluminum frames are priced differently.

  5. Replacement or new opening

    New openings need framing and siding work.

Permits and what's included in Frederick

Permit note

Like-for-like replacements often need no permit, but new or enlarged openings usually do. Check with your building department.

Rules are set locally; confirm with Frederick’s building department.

What’s usually included

  • New windows
  • Removal of the old windows
  • Installation, flashing and sealing

Scopes vary. Get the scope in writing on every quote.

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Top-ranked window installers in Frederick

The top 3 of 385 window installers we rank for Frederick, MD, by CR Score. Paid placement never changes rank.

  1. #1
    Quality Window & Glass Repair LLC
    CR Score 915.0from 392 Google reviews
  2. #2
    Safety Glass Repair
    CR Score 885.0from 165 Google reviews
  3. #3
    Kennedy Locksmith
    CR Score 884.9from 980 Google reviews

See all ranked window installers in Frederick

Window replacement cost in Frederick: questions

How much does window replacement cost in Frederick, MD?

In Frederick, window replacement typically runs $3,370 to $11,600, about $7,200 for a typical job. That is the US national range from HomeAdvisor ($3,436 to $11,838) adjusted by the South Atlantic factor of 0.98 from the 2025 Cost vs. Value Report. Checked October 2026.

Why is the Frederick price different from the national price?

The 2025 Cost vs. Value Report puts the “Window Replacement | Vinyl” project at $21,629 in the South Atlantic division against $22,073 nationally, a factor of 0.98. We apply that factor to the national range. It is a division-level adjustment, not a Frederick price survey.

Do I need a permit for window replacement in Frederick?

Like-for-like replacements often need no permit, but new or enlarged openings usually do. Check with your building department. Rules are set locally, so confirm with Frederick’s building department.

What affects the cost of window replacement?

Number of windows: per-window prices drop on larger projects. Window size and type: picture, bay and skylight windows cost more than standard double-hung. Glass: double or triple panes, Low-E coatings and gas fill add cost. Frame material and brand: vinyl, wood, fiberglass and aluminum frames are priced differently.

How many window installers serve Frederick?

We rank 385 window installers for Frederick, MD by CR Score. Get at least three written quotes for the same scope.

What is usually included in the price?

New windows; Removal of the old windows; Installation, flashing and sealing. Always get the scope in writing on the quote.

Sources

Checked October 2026. Figures are estimates, not quotes.

  1. HomeAdvisor: Window installation cost · page updated June 17, 2026 · checked October 2026Primary source. Used for: Low, typical and high; drivers.
  2. Journal of Light Construction: 2025 Cost vs. Value Report: Window Replacement, Vinyl · page updated 2025 · checked October 2026Used for: Regional adjustment ratio.
  3. Journal of Light Construction: 2025 Cost vs. Value Report, South Atlantic division · checked October 2026Used for: Regional factor 0.98 for “Window Replacement | Vinyl”.
These are published estimates with a documented regional adjustment, checked October 2026. They are not quotes. Typical range shown: $3,370 to $11,600. Editorial policy

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