National Gypsum Co.
Construction company in Baltimore, MD 21224
About this company
National Gypsum Co. is listed as a construction company at 2301 S Newkirk St in Baltimore, Maryland, in Baltimore County. It is one of 77 general contractors in ZIP 21224.
Other construction companies nearby
Sharkys Construction1700 S Haven St Ste 1, Baltimore
0.8 mi(410) 327-0000
Aluma Systems2100 Van Deman St, Baltimore
0.9 mi(301) 937-5090
Lehigh Cement Company3100 Mertens Ave, Baltimore
0.9 mi(410) 276-7707
Heidelberg Materials, Cement3100 Mertens Ave, Baltimore
0.9 mi(410) 276-7707
Specialty Industries6301 Seaforth St, Baltimore
1.0 mi(410) 633-1914
Housing market around ZIP 21224
Figures describe the local area, not this company.
Typical home value$233,000−2.9% past year · +31% in 10 years
Typical rent$2,162+4.5% past year
12-month value outlook0.0%Roughly flat
New homes permitted, 2025543Baltimore County
Days to sale agreement16Baltimore metro · 14 a year ago
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: Baltimore County permitted 543 new homes in 2025, including 289 apartment units. 12% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.