Allegheny Builders & Contractors
General contractor in Olney, MD 20832
About this company
Allegheny Builders & Contractors is listed as a general contractor at 18304 Dundonnell Way in Olney, Maryland, in Montgomery County. Federal motor carrier records list 1 drivers and 1 trucks for the company. It is one of 18 general contractors in ZIP 20832.
Other construction companies nearby
Team River Runner5007 Stone Rd, Rockville
0.5 mi(571) 330-6383
B and C Contractors4601 Bettswood Dr, Olney
0.7 mi(240) 701-0000
GRP Construction Services18901 Muncaster Rd, Derwood
1.2 mi(301) 835-3527
Adam's General Construction18170 Headwaters Dr, Olney
1.5 mi(301) 893-7514
Elohim Construction LLC3508 Toddsbury Ln, Olney
1.7 mi(443) 331-5153
Housing market around ZIP 20832
Figures describe the local area, not this company.
Typical home value$651,000+0.6% past year · +43% in 10 years
12-month value outlook+0.2%Roughly flat
Days to sale agreement19Washington metro · 17 a year ago
New homes permitted, 20251,411Montgomery County
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. 11% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.