Metro East Home Pros › O'Fallon

Home service pros in O'Fallon, IL

9 companies based in O'Fallon and 24 more whose own websites say they serve it.

Housing. O'Fallon is in St. Clair County. U.S. Census Bureau estimates (American Community Survey, 2019–2023) put the median year built for its 13,152 housing units at 1995; about 27% were built before 1980 and 40% in 2000 or later (Census table B25034).

  • A large share of homes went up after 2000, so many owners are now meeting their first round of furnace, AC, water heater and roof replacements. Check your subdivision's covenants or HOA rules before exterior work.
  • Metro East summers are hot and humid and winters bring freeze-thaw cycles, so furnace and AC tune-ups, gutter cleaning and roof checks before each season pay off.

Permits. Inside city limits, permits are handled by the City of O'Fallon Building & Inspections Division (618-624-4500 ext. 4). The city lists the 2021 International Building Code as in effect from January 1, 2026, and requires an occupancy permit when a home changes owners or tenants and no current permit is on file. Rules change, so confirm with the office before work starts.

Based in O'Fallon

Preferred Plumbing

An O'Fallon plumbing company founded in 1992 by an Air Force veteran, handling leaks, clogs, water heaters and shower installs.

121 Behrens Dr, Suite 4, O'Fallon, IL 62269

Also serving O'Fallon

These companies list O'Fallon in the service area on their own websites.

Jarvis Electric

A licensed electrical contractor for new service installs, remodels, whole-house rewires, EV chargers, generators and lighting upgrades.

1604 N Illinois St, Swansea, IL 62226

All-Pro Metro East Construction

A New Athens-based contractor for bathroom updates, deck repairs and general home repairs. Belleville and O'Fallon are its priority service areas, and it offers free written estimates.

Based in New Athens, IL; Belleville and O'Fallon are its priority service areas

BEL-O Cooling & Heating

A family-owned company since 1959 (founded as Belleville O'Fallon Heating & Cooling) offering heating, cooling, indoor air quality and plumbing for homes and businesses.

Lebanon, IL 62254 (location shown on its website)

BELOMAN

A second-generation, family-owned heating, cooling and plumbing company serving the Metro East since 1959; also does architectural sheet metal.

5909 Cool Sports Road, Belleville, IL 62223

Healy Lawn Care

A lawn care company based in the O'Fallon and Shiloh area since 2003, offering mowing, trimming, edging, mulching, core aeration and leaf cleanup.

O'Fallon / Shiloh, IL area

T.L.C. Landscape

A Swansea landscaping company with more than 35 years in the Metro East, doing landscape design, patios, stonework, retaining walls and outdoor lighting.

4100 Smelting Works Rd, Swansea, IL 62226

A Davinroy Plumbing & Mechanical

A St. Clair County plumbing company with 24/7 emergency service for drains, water heaters, water cleanup, renovations and new construction; the company says it has served neighbors for over 100 years.

407 N High Street, Belleville, IL 62220

ATK Home Services

A licensed plumbing contractor in Shiloh offering plumbing repairs, water heater installs, leak detection, and sewer and water line excavation.

225 Shiloh Station Rd, Shiloh, IL 62269

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