Keystone Building and Restoration
General contractor in Gaithersburg, MD 20877
About this company
Keystone Building and Restoration is listed as a general contractor at 9 N Summit Ave Ste 200 in Gaithersburg, Maryland, in Montgomery County. It is one of 51 general contractors in ZIP 20877.
Other construction companies nearby
Long Design Build117 Tulip Dr, Gaithersburg
0.2 mi(240) 801-0418
DMV Kitchen and Bath429 E Diamond Ave, Gaithersburg
0.2 mi(301) 977-7111
Davida's Kitchen and Tiles435 E Diamond Ave, Gaithersburg
0.2 mi(240) 361-9331
Alvarado General Contractors453 S Frederick Ave, Gaithersburg
0.3 mi(301) 525-2821
Coakley & Williams Construction16 S Summit Ave Ste 300, Gaithersburg
0.3 mi(301) 963-5000
Housing market around ZIP 20877
Figures describe the local area, not this company.
Typical home value$468,000−1.9% past year · +46% in 10 years
Typical rent$2,051+1.5% past year
12-month value outlook+0.2%Roughly flat
New homes permitted, 20251,411Montgomery County
Days to sale agreement19Washington metro · 17 a year ago
Listings with a price cut29.4%Washington metro
Sale price vs list99.7%Washington metro
New construction sales489Washington metro, Aug · −24% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: Montgomery County permitted 1,411 new homes in 2025, including 559 apartment units. 28% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.