De Cook Development
HVAC contractor in Port Byron, IL 61275
About this company
De Cook Development is listed as an HVAC contractor at 3906 214th St N # N in Port Byron, Illinois, in Rock Island County. It is one of 3 HVAC companies in ZIP 61275.
Other HVAC companies nearby
Young's Heating and Air215 N High St, Port Byron
3.6 mi(309) 523-3314
Becker & Becker111 Walnut Ln, Colona
6.2 mi(309) 944-3592
Bornhoeft Heating & Air Conditioning620 15th Ave, East Moline
6.8 mi(309) 755-0808
Freed Heating & Air Conditioning201 39th St, Moline
8.6 mi(309) 323-9584
Sears Heating and Air Conditioning4241 Avenue of the Cities, Moline
8.9 mi(309) 517-5326
Housing market around ZIP 61275
Figures describe the local area, not this company.
Typical home value$305,000+8.0% past year · +59% in 10 years
12-month value outlook+2.9%
Days to sale agreement14Davenport metro · 13 a year ago
New homes permitted, 2025187Rock Island County
Listings with a price cut27.8%Davenport metro
Sale price vs list99.0%Davenport metro
New construction sales8Davenport metro, Aug · −27% 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: Rock Island County permitted 187 new homes in 2025, including 62 apartment units. 19% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.