Kitchens sell O'Fallon homes. Cost vs. Value data shows mid-range remodels return 101% at resale, recouping $27,318 in value. Comparing bids helps you plan the finishes that move listings fast.

Est. Cost$15,000 to $75,000

Resale Value+$27,318

ROI 101%View pros →

Roofing

A new roof in O'Fallon returns 69% at resale and prevents far costlier structural damage. Roofs have to handle hail, heavy weather, and local wind code requirements.

Est. Cost$8,000 to $18,000

Resale Value+$20,252

ROI 69%View pros →

Garage Doors

In O'Fallon, garage door replacement returns 282% at resale, recouping $12,298 while transforming your home's street presence. Insulated models also cut heating costs year-round.

Est. Cost$1,000 to $4,000

Resale Value+$12,298

ROI 282%View pros →

Bathroom Remodel

In O'Fallon, mid-range bathroom remodels return 71% at resale, adding $17,662 in market value. Updated tile, modern fixtures, and clean finishes are what many buyers look for.

Est. Cost$5,000 to $25,000

Resale Value+$17,662

ROI 71%View pros →

Window Replacement

In O'Fallon, new windows return 81% at resale. Energy-efficient replacements cut monthly utility bills and qualify for federal tax credits.

Est. Cost$5,000 to $20,000

Resale Value+$17,937

ROI 81%View pros →

See all 14 project values for O'Fallon

Siding

O'Fallon siding replacements return 101% at resale, adding $23,805 in market value. Fiber cement and premium vinyl hold up to freeze-thaw cycles and can lift curb appeal.

Est. Cost$8,000 to $20,000

Resale Value+$23,805

ROI 101%View pros →

Decks

Outdoor living is a buying criterion in O'Fallon. Deck additions return 93% at resale ($16,733 of added value) when built to code.

Est. Cost$8,000 to $25,000

Resale Value+$16,733

ROI 93%View pros →

Fencing

Fencing defines your O'Fallon property line, creates private outdoor living space, and adds meaningful curb appeal. HOA rules, city permit requirements, and underground utility markouts can apply, so compare how the bids you receive handle them.

Est. Cost$2,000 to $8,000

Home Addition

A properly permitted home addition in O'Fallon permanently adds square footage. Cost vs. Value data shows a 41% recoup rate at resale, and an addition built to code and inspected is easier to document when you sell.

Est. Cost$40,000 to $150,000

Resale Value+$64,636

ROI 41%View pros →

HVAC

Buyers in O'Fallon walk from listings with aging HVAC. A replacement returns 71% at resale and reduces the risk of an emergency replacement when the system fails.

Est. Cost$5,000 to $15,000

Resale Value+$13,238

ROI 71%View pros →

Entry Door

In O'Fallon, a new entry door returns 235% at resale, one of the best price-per-impression upgrades available. Steel and fiberglass doors improve security, insulation, and the first thing every buyer sees.

Est. Cost$1,500 to $5,000

Resale Value+$5,494

ROI 235%View pros →

Insulation

In O'Fallon, insulation is one of the cheapest ways to cut a Midwest energy bill, and it pays back every year you stay in the home. Sealing an under-insulated attic eases the load on furnaces and AC units, which keeps both running longer and cheaper.

Patio Cover

In O'Fallon, a quality patio cover extends your outdoor living season by months, adds 5-10% to home value, and protects your patio furniture from weather damage. Our screened local contractors install aluminum, wood, and vinyl options. Most projects complete in 1-2 days with warranties included.

Est. Cost$3,000 to $30,000

Sun Room

A sunroom blurs the line between indoors and outdoors year-round, a feature O'Fallon buyers increasingly expect. Glass-enclosed additions expand livable space without the full cost of a traditional room addition.

Est. Cost$20,000 to $70,000

Source: Remodeling Magazine 2025 Cost vs. Value. Mid-range tier. ROI = resale value ÷ project cost × 100.

Nearby areas: St. Louis Metro

St. Louis O'Fallon St. Charles St. Peters Florissant Chesterfield Wentzville Belleville

Three Questions to Settle Before You Hire

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Mechanic's Liens

In O'Fallon, if a contractor doesn't pay their supplier, you can be held liable. The supplier may be able to place a lien on your home, which could mean paying for materials twice.

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Mandatory Tear-Downs

If work is done without inspection in O'Fallon, you may be forced to tear down walls or decks to prove compliance. Doing the work twice can be very expensive.

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Property Damage Caps

If a crew without liability coverage drops a tree on your roof, they may not be able to pay for it, and you may pay the deductible and higher premiums. Ask for a current General Liability certificate, and compare bids before you hire. Each listing shows what we checked and when.