Construction trade companies in Frederick, MD 21701
6 construction trade companies, with local market data for this ZIP.
General contractors 51Roofing and exteriors 17HVAC 13Remodeling 11Electricians 8Other construction trades 6Concrete and masonry 4Carpentry, drywall and windows 4Excavation and demolition 2Painting 2Garage doors 1Flooring and tile 1Fences and decks 1
Area profitability, other construction trades62 / 100Strong market, crowded field
Typical home value$443,000−1.0% in the past year
New homes permitted, 20251,168Frederick County
Homeowners66.2%17,662 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Congressional Iron Works IncConstruction trade company · 530 Monocacy Blvd, Frederick(301) 620-2590 · congressionalironworks.com · 6 drivers, 5 trucks
East Coast DoorsConstruction trade company · 7814 Dance Hall Rd, Frederick(301) 898-5770 · eastcoastdoor.com
Kaempf and Harris Sheet MetalMetal fabricator · 217 Monroe Ave, Frederick(301) 663-6670 · kaempfandharris.com
W.A. Tolbard Heating and Air ConditioningConstruction trade company · 413 N East St, Frederick(301) 662-2515 · watolbard.com
Generator Supercenter Of NW MarylandConstruction trade company · Frederick(301) 887-5303 · 5 drivers, 3 trucks
Knott's Welding, LLCMetal fabricator · 6047 Quinn Rd, Frederick(301) 788-9858 · 1 driver, 1 truck
Other construction trades in ZIP 21701 at a glance
Local building angle: Frederick County permitted 1,168 new homes in 2025, including 354 apartment units. 25% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.