Gast Construction Co Inc

Construction company in Jarrettsville, MD 21084

About this company

Gast Construction Co Inc is listed as a construction company based in Jarrettsville, Maryland, in Harford County. Federal motor carrier records list 2 drivers and 3 trucks for the company. It is one of 9 general contractors in ZIP 21084.

Other construction companies nearby

Caswell Testing & Water Systems3515 N Furnace Rd, Jarrettsville

(410) 557-9355

Emerald Builders Inc3957 Norrisville Rd, Jarrettsville

(410) 692-6196

Hellmann Brothers1300 N Bend Rd, Jarrettsville

(410) 692-6023

Kitchens by Request1115 Baldwin Mill Rd, Jarrettsville

(410) 557-6957

Plumb Construction Co.1207 Baldwin Mill Rd, Jarrettsville

(410) 557-4310

Fleet size

Drivers2

Trucks3

Last federal filing: Feb 2026. Source: FMCSA.

Strong market, crowded fieldArea profitability for construction in ZIP 21084

Housing demand76

Sales pace, new listings and new construction. Source: Zillow

Customer spending power87

Household income and home values

Room for another contractor25

More crowded than 75% of US ZIPs

Scored against every US ZIP. An index of local conditions, not this company's results.

County context

One of 252 general contractors in Harford County, MD.

47 HVAC companies in Harford County, MD.

All 509 construction companies in Harford County, MD.

ZIP 21084 at a glance

Population: 7,070 (115 per sq mi)
Median age: 44
Households: Median income $121,509 · 64% earn six figures
Housing: 94% owner-occupied
Workforce: 64% labor-force participation · 5.5% unemployment

ZIP figures are US Census estimates for the ZIP area, not the company.

Housing market around ZIP 21084

Figures describe the local area, not this company.

Typical home value$545,000+3.6% past year · +54% in 10 years

12-month value outlook+0.3%Roughly flat

Days to sale agreement16Baltimore metro · 14 a year ago

New homes permitted, 2025715Harford County

Listings with a price cut30.2%Baltimore metro

Sale price vs list100.1%Baltimore metro

New construction sales122Baltimore metro, Aug · −37% 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: Harford County permitted 715 new homes in 2025, including 137 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.