Home Remodeling Costs in Gaithersburg, MD
Remodeling costs in Gaithersburg run about 27% above the Maryland median, based on home values and labor rates across its 4 ZIP codes in Montgomery County. The ranges below reflect what Gaithersburg homeowners actually pay, from the cheapest to the priciest part of town.
- Cost index
- 1.27×
- Maryland median
- Median home value
- $608,720
- Zillow ZHVI
- ZIP codes
- 4
- Montgomery County
- Projects covered
- 10
- cost + ROI data
What Remodeling Projects Cost in Gaithersburg (2026)
Ranges span Gaithersburg's least to most expensive ZIPs, including the ±15% contractor variance. ROI is the share of cost typically recouped at resale in your census region.
Cost range
$9,775 - $19,838
Typical
$14,605
Cost range
$14,994 - $30,429
Typical
$22,403
Cost range
$22,950 - $46,575
Typical
$34,290
Cost range
$20,910 - $42,435
Typical
$31,242
Cost range
$3,825 - $7,762
Typical
$5,715
Cost range
$14,973 - $30,386
Typical
$22,371
Cost range
$48,875 - $99,187
Typical
$73,025
Cost range
$15,042 - $30,526
Typical
$22,474
Cost range
$2,002 - $4,062
Typical
$2,991
Cost range
$8,500 - $17,250
Typical
$12,700
| Project | Cost range | Typical | ROI | Details |
|---|---|---|---|---|
| Roofing Replacement | $9,775 - $19,838 | $14,605 | 70/100 | ZIP estimate → |
| Window Replacement | $14,994 - $30,429 | $22,403 | 83/100 | ZIP estimate → |
| Kitchen Remodel | $22,950 - $46,575 | $34,290 | 100/100 | ZIP estimate → |
| Bathroom Remodel | $20,910 - $42,435 | $31,242 | 75/100 | ZIP estimate → |
| Garage Door Replacement | $3,825 - $7,762 | $5,715 | 100/100 | ZIP estimate → |
| Deck Addition | $14,973 - $30,386 | $22,371 | 83/100 | ZIP estimate → |
| Basement Finishing | $48,875 - $99,187 | $73,025 | 76/100 | ZIP estimate → |
| Siding Replacement | $15,042 - $30,526 | $22,474 | 100/100 | ZIP estimate → |
| Entry Door Replacement | $2,002 - $4,062 | $2,991 | 100/100 | ZIP estimate → |
| HVAC Replacement | $8,500 - $17,250 | $12,700 | 74/100 | ZIP estimate → |
Sources: Remodeling Magazine Cost vs. Value, Zillow ZHVI, BLS construction wages. Data updated 2026-05. How we calculate estimates
Roofing Replacement Cost by ZIP Code
Pick a project and the prices below update. Costs vary up to 50% across Gaithersburg. Open your ZIP for the full local breakdown.