Triad Mechanical Services, Inc
HVAC contractor in Glen Arm, MD 21057
About this company
Triad Mechanical Services, Inc is listed as an HVAC contractor at 12232 Long Green Pike in Glen Arm, Maryland, in Baltimore County. It is one of 4 HVAC companies in ZIP 21057.
Other HVAC companies nearby
A-Team Heating and Air Conditioning5234 Glen Arm Rd E, Glen Arm
0.2 mi(410) 663-1330
Flanagan Enterprise5234 Glen Arm Rd, Glen Arm
0.2 mi(410) 444-6922
S&L Prime A/C and Heating12076 Glen Arm Rd, Glen Arm
0.4 mi(410) 274-4086
Comfort Systems9544 Belair Rd, Nottingham
3.5 mi(410) 529-1879
J.R. Mechanical Service Inc9537 Belair Rd, Baltimore
3.5 mi(410) 529-5257
Housing market around ZIP 21057
Figures describe the local area, not this company.
Typical home value$644,000+2.6% past year · +48% in 10 years
12-month value outlook+0.5%Roughly flat
Days to sale agreement16Baltimore metro · 14 a year ago
New homes permitted, 20251,531Baltimore 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: Baltimore County permitted 1,531 new homes in 2025, including 379 apartment units. 8% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.