Construction trade companies in Gaithersburg, MD 20879
4 construction trade companies, with local market data for this ZIP.
General contractors 68Electricians 18HVAC 17Roofing and exteriors 8Remodeling 7Carpentry, drywall and windows 6Concrete and masonry 6Painting 4Other construction trades 4Excavation and demolition 3Flooring and tile 3Garage doors 3Fences and decks 2
Area profitability, other construction trades62 / 100Strong market, crowded field
Typical home value$433,000−1.6% in the past year
New homes permitted, 20251,411Montgomery County
Homeowners69.8%8,850 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Capitol Iron WorksMetal fabricator · 7680 Airpark Rd, Gaithersburg(240) 658-8844 · capitolironworksdc.com
Iron Dc IncMetal fabricator · 7800 Airpark Rd, Gaithersburg(301) 250-6797 · Irondc.com · 1 driver, 1 truck
Rockville Steel and Manufacturing CompanyMetal fabricator · 7411 Lindbergh Dr, Gaithersburg(301) 548-7400 · rockvillesteelco.com · 6 drivers, 4 trucks
Custom Sheet MetalMetal fabricator · 18707 Mooney Dr, Gaithersburg(301) 340-1006
Other construction trades in ZIP 20879 at a glance
Local building angle: Montgomery County permitted 1,411 new homes in 2025, including 559 apartment units. 14% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.