Retrotherm Insulators
General contractor in Zionsville, PA 18092
About this company
Retrotherm Insulators is listed as a general contractor at 6377 Tollgate Rd in Zionsville, Pennsylvania, in Lehigh County. It is one of 7 general contractors in ZIP 18092.
Other construction companies nearby
American Rock Mechanics LLC7531 Chestnut St, Zionsville
1.0 mi(610) 965-2444
RDP Slate Roof Repair5622 Schantz Rd, Emmaus
1.2 mi(610) 966-5556
Finishing Edge123 Weaver Rd, Zionsville
2.1 mi(610) 966-1981
Reed L. Harris Construction5163 Mill Rd, Emmaus
2.5 mi(610) 965-7837
Zgura's Concrete Services4946 Jasper Rd, Emmaus
2.6 mi(610) 965-3167
Housing market around ZIP 18092
Figures describe the local area, not this company.
Typical home value$504,000+5.2% past year · +76% in 10 years
12-month value outlook+2.3%
Days to sale agreement12Allentown metro · 12 a year ago
New homes permitted, 2025394Lehigh County
Listings with a price cut22.9%Allentown metro
Sale price vs list101.2%Allentown metro
New construction sales47Allentown metro, Aug · −25% 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: Lehigh County permitted 394 new homes in 2025. 12% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.