Home Improvement Contractors in Collinsville, IL

The median home in the city of Collinsville was built in 1971, older than the U.S. median of 1980 and about the same as the Illinois median of 1971. That is in line with the Madison County median of 1971.¹ Older housing stock means a contractor's first job is finding what is behind the finish - wiring, plumbing and roof decking - before a price is final. Somewhat more of Collinsville's housing predates 1980 than the national share: 61% against 50%, with 4% built since 2010. The largest single share, 26%, dates from 1960-1979. That makes it much the same age as Madison County as a whole (61% built before 1980).¹ On houses from the 1960s and 1970s, the routine checks are aluminum branch wiring, galvanized supply lines and original single-pane windows.

Owner-occupied homes in Collinsville are older than rentals: a median build year of 1965 against 1980.¹ Where owner-occupied homes skew older, a repair-versus-replace conversation is the usual starting point rather than a like-for-like swap. Housing in Collinsville is mostly detached single-family: 66% of units, with 12% in buildings of five or more units.¹ A mostly detached stock means the full range of exterior work applies: roofs, garage doors, chimneys and backyard units.

66% of occupied homes in Collinsville are owner-occupied, in line with the Illinois share of 67%.¹ The median owner-occupied home in Collinsville is valued at $163,600 (ACS), below the Illinois median of $263,300. Within Madison County the median is $173,000, so Collinsville sits close to it.¹ With values below the state median, phased scopes - the essential work first - are a common way to keep a project sensible. The Belleville Siu Rsch station averages 93 nights a year at or below 32°F and 27 at or below 20°F.^2,3 A real freeze season means masonry, roofing and exterior sealing are specified for freeze-thaw cycles.

Summers run hot, with about 53 days a year at 90°F or more and 2 at 100°F.^2,3 A long hot season shortens the life of roofing, sealants and garage-door electronics, and it shapes what a contractor specifies. Rainfall is substantial: about 43 inches a year, 13 days of it an inch or more.^2,3 Heavy rainfall makes flashing, drainage and ventilation details the difference between a sound assembly and a wet one.

Heating dominates the year: about 4,209 heating degree days against 1,579 cooling degree days (base 65°F).^2,3 In a heating-led climate, insulation and air sealing carry most of the energy-code weight for any work that opens the envelope. Collinsville sits in IECC climate zone 4A (Mixed-Humid).⁴ Building permits in Collinsville are normally issued by the city building department.^5,6