Spec Group Concrete
General contractor in O'Fallon, MO 63366
About this company
Spec Group Concrete is listed as a general contractor at 305 Dora Pl in O'Fallon, Missouri, in St. Charles County. It is one of 47 general contractors in ZIP 63366.
Other construction companies nearby
Siegler's Custom Kitchens18 Sanders Dr, O'Fallon
0.5 mi(636) 272-4773
Tuff Shed614 School St, O'Fallon
0.6 mi(636) 733-6415
Everything Garage Doors609 Ofallon Ave, O'Fallon
0.7 mi(314) 795-5481
ORF Exteriors1112 Rock Creek Elementary Dr, O'Fallon
0.7 mi(636) 377-0673
Slabjack Concrete Lifting951 W Terra Ln, O'Fallon
1.2 mi(636) 294-1773
Housing market around ZIP 63366
Figures describe the local area, not this company.
Typical home value$364,000+1.9% past year · +72% in 10 years
Typical rent$1,708+1.7% past year
12-month value outlook+2.3%
New homes permitted, 20251,661St. Charles County
Days to sale agreement11St. Louis metro · 8 a year ago
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: St. Charles County permitted 1,661 new homes in 2025, including 284 apartment units. 46% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.