T&T Associates, Inc.
HVAC contractor in Herndon, VA 20170
About this company
T&T Associates, Inc. is listed as an HVAC contractor at 1515 Summerset Pl in Herndon, Virginia, in Fairfax County. It is one of 6 HVAC companies in ZIP 20170.
Other HVAC companies nearby
Quality Air Experts45945 Trefoil Ln Ste 130A, Sterling
0.5 mi(571) 353-9900
Eastern Tech45945 Trefoil Ln Ste 130A, Sterling
0.5 mi(703) 568-9965
YAZD Mechanical Inc45945 Trefoil Ln, Sterling
0.5 mi(703) 981-0055
911Air-Care1210 Autumn Pl, Herndon
0.6 mi(571) 910-9901
Donmar Heating, Cooling & Plumbing22900 Shaw Rd, Sterling
0.8 mi(703) 457-8676
Housing market around ZIP 20170
Figures describe the local area, not this company.
Typical home value$688,000+1.2% past year · +59% in 10 years
Typical rent$2,388−0.3% past year
12-month value outlook+0.3%Roughly flat
New homes permitted, 20252,862Fairfax County
Days to sale agreement19Washington metro · 17 a year ago
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: Fairfax County permitted 2,862 new homes in 2025, including 2,122 apartment units. 15% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.