Home Improvement Contractors in O'Fallon, MO
Every trade we cover, for homes in O'Fallon. Tell us the project once and we connect you with licensed, insured contractors for it through one national line - and you compare written scopes. The median O'Fallon home dates from 2000, so most jobs start with what is already there.
- Licensed and insured contractors only
- Written scope before work starts
- No obligation on quotes
- Local permit knowledge
Services in O'Fallon
Each service has its own O'Fallon page with local figures. Ranges reflect Missouri costs.
Home Remodeling
Whole-home and room-by-room remodels
$14,750 - $77,900
ADU Construction
Accessory dwelling units, garage conversions and in-law suites
$69,700 - $254,200
Garage Door Repair & Installation
Garage door repair, spring replacement and new installs
$150 - $1,950
Chimney Sweeping & Repair
Chimney sweeping, inspection, caps, crowns and liners
$100 - $3,200
Kitchen Remodeling
Kitchen remodels from refacing to full gut renovations
$11,500 - $63,950
Bathroom Remodeling
Bathroom remodels, tub-to-shower conversions and wet rooms
$7,800 - $34,450
Roofing
Roof replacement, repair and storm damage work
$5,600 - $27,900
Handyman & Home Repair
General home repair, maintenance and small projects
$100 - $2,600About homes in O'Fallon
Census and NOAA figures for the city of O'Fallon in St. Charles County, not the metro, with a source for each.
The median home in the city of O'Fallon was built in 2000, newer than the U.S. median of 1980 and newer than the Missouri median of 1978.1 A large share of newer homes means many systems are still inside a warranty; checking that comes before any repair quote. Most of O'Fallon's housing is recent: only 9% of units predate 1980 (U.S. 50%) and 20% were built since 2010.1 Owner-occupied and rented homes in O'Fallon are of similar age: median build years 2000 and 2001.1
Housing in O'Fallon is mostly detached single-family: 75% of units, with 10% 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. Home ownership is the norm in O'Fallon: 81% of occupied homes are owner-occupied (68% statewide).1 The median owner-occupied home in O'Fallon is valued at $326,200 (ACS), above the Missouri median of $230,300.1 Home values above the state median tend to support fuller scopes; the written scope should still separate must-do from nice-to-have.
Winters are long: the St Louis Sprt Of S L Ap station averages 105 nights a year at or below 32°F and 33 at or below 20°F.2,3 Long winters put freeze-thaw, ice dams and snow load at the center of roofing and masonry decisions. Summers bring about 44 days a year at or above 90°F.2,3 Annual precipitation is about 40 inches, with 10 days a year bringing an inch or more.2,3
Heating dominates the year: about 4,650 heating degree days against 1,448 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. O'Fallon sits in IECC climate zone 4A (Mixed-Humid).4 Building permits in O'Fallon are normally issued by the city building department.5,6
| Before 1940 | 0.8% |
|---|---|
| 1940-1959 | 2.2% |
| 1960-1979 | 6.3% |
| 1980-1999 | 41% |
| 2000-2009 | 30.2% |
| 2010 or later | 19.5% |
Sources and notes (6)
- U.S. Census Bureau, American Community Survey 5-year estimates (ACS 2020-2024 5-year (released 2026-01))
- NOAA NCEI U.S. Climate Normals, nearest station (1991-2020 normals (published 2021))
- NOAA NCEI normals station inventory (1991-2020)
- Guide to Determining Climate Zones by County: Building America and IECC 2021 Updates (PNNL-33270) (September 2022 (IECC 2021 county map))
- U.S. Census Bureau population estimates (Vintage 2024)
- U.S. Census Bureau geographic code files (2020)
- Climate figures are for NOAA station St Louis Sprt Of S L Ap, 9.1 miles from the place center; housing figures are ACS ACS 2020-2024 5-year with 90% margins of error in the source tables.
Get a free O'Fallon quote
Written scope, no obligation. Call now or email and we will get back to you.
O'Fallon and nearby
Requests for O'Fallon and the surrounding Missouri area go through our national line. Call (844) 624-3161 with the address and the project and we confirm whether we have a contractor who can take it on.
Nearest places with a page
Straight-line distances between place centers, not drive times.
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Open O'Fallon, MO in Google MapsO'Fallon questions
How much does home remodeling cost in O'Fallon, MO?
Most home remodeling projects in O'Fallon, MO land between $14,750 and $77,900, depending on scope, access and material grade. That is an estimated range for planning, not a quote - call (844) 624-3161 and we will scope your job properly.
Do I need drawings before calling?
No. If you have them, good - if not, we start from what you want to change and work back to what the house allows.
How old are the homes in O'Fallon?
The median home in the city of O'Fallon was built in 2000, newer than the U.S. median of 1980 and newer than the Missouri median of 1978. Most of O'Fallon's housing is recent: only 9% of units predate 1980 (U.S. 50%) and 20% were built since 2010. Those are Census figures for the whole housing stock, including apartments, not a statement about any one house.
What is the O'Fallon climate like for exterior work?
Winters are long: the St Louis Sprt Of S L Ap station averages 105 nights a year at or below 32°F and 33 at or below 20°F. Summers bring about 44 days a year at or above 90°F. Annual precipitation is about 40 inches, with 10 days a year bringing an inch or more. NOAA 1991-2020 normals for the nearest station; a contractor still assesses the actual site.
Get a free O'Fallon quote
Written scope, no obligation. Call now or email and we will get back to you.