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The average cost of window replacement in Gaithersburg, MD is $264–$792 per window installed. Prices vary based on project size, materials, and contractor. Use the table below as a starting point, then get free quotes to find the best price in your area.
| Type | Low Estimate | High Estimate |
|---|---|---|
| Single-hung vinyl | $220 | $396 |
| Double-hung vinyl | $308 | $528 |
| Casement | $352 | $704 |
| Bay/Bow | $1,056 | $3,080 |
Gaithersburg, MD Climate Note: With mild-to-hot, humid summers and freezing winters, window replacement planning should address cooling, moisture control, and freeze-thaw exposure.
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Gaithersburg's documented historic residential forms include bungalows, Craftsman houses, and Colonial Revivals, alongside newer neighborhoods, so window choices may need to balance existing character with updated performance.
Homeowners in Olde Towne, Brookes, Russell and Walker Historic District, Chestnut/Meem Historic District, Kentlands, Lakelands and other parts of Gaithersburg may encounter different project conditions based on their home’s age, layout, and existing materials.
Local permitting note: The City of Gaithersburg lists enlarging windows or doors among residential projects covered by its permitting process; exterior alterations to locally designated historic properties also require Historic District Commission approval.
The city's documented older residential forms include bungalows, Craftsman houses, and Colonial Revivals, so homeowners should consider how replacement windows fit the existing architectural character as well as how they handle local summer humidity and winter freezing.
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