B. F. Mahn & Sons, Inc.
HVAC contractor in De Soto, MO 63020
About this company
B. F. Mahn & Sons, Inc. is listed as an HVAC contractor at 112 W Clement St in De Soto, Missouri, in Jefferson County. It is one of 4 HVAC companies in ZIP 63020.
Other HVAC companies nearby
Sheet Metal Contractors1661 Veterans Dr, De Soto
1.1 mi(636) 337-2150
Sheet Metal Contractors, Inc.1661 Veterans Dr, De Soto
1.5 mi(636) 337-2150
Becker Heating & Air Conditioning145 Southmore St, Hillsboro
4.2 mi(636) 337-7003
Townsend Heating & Cooling Inc.238 Main St, Festus
6.1 mi(636) 931-8885
Bone Heating and Cooling2731 Lucas Ln, Festus
8.1 mi(636) 937-6942
Housing market around ZIP 63020
Figures describe the local area, not this company.
Typical home value$245,000+6.0% past year · +72% in 10 years
12-month value outlook+2.4%
Days to sale agreement11St. Louis metro · 8 a year ago
New homes permitted, 2025617Jefferson County
Listings with a price cut29.2%St. Louis metro
Sale price vs list100.1%St. Louis metro
New construction sales128St. Louis metro, Aug · −14% 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: Jefferson County permitted 617 new homes in 2025. 21% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.