Home Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost DecaturHome Addition Construction Cost Decatur

Home Addition Construction Cost in Decatur, IL

Detailed pricing guide with local market adjustments and material comparisons

Decatur Average

$40,000–$150,000

Market Tier

Mid-Size City

Cost Breakdown

Home Addition Construction Cost in Decatur

Mid-Size City

LowAverageHigh

$40,000$95,000$150,000

Market Tier

Mid-Size City (1x)

Mid-size city with average market costs

Material Cost Comparison

Foundation concrete(Budget)

$30,000–$112,500

Framing lumber(Mid-Range)

$40,000–$150,000

Roofing materials(Premium)

$56,000–$210,000

Factors that affect your cost

Addition size (square footage)
Number of stories
Foundation type
Roofing integration with existing
Plumbing and electrical scope
HVAC extension
Architectural design
Permit and engineering fees
Interior finish level
Landscaping restoration

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Decatur Housing Market

Median Home Price

$189,000

Homes for Sale

Price per Sq Ft

$139

Local Pros

209

Home Service Professionals Near Decatur

Landscapers 35Agents 33lender 29HVAC Techs 25Roofers 25Cleaners 23multimedia_specialist 21Painters 18

Median Household Income

$50,809

Median Home Value

$97,300

Median Rent

$796/mo

Homeownership Rate

62.3%

Population

70,368

Median Year Built

1960

Source: U.S. Census Bureau, ACS 2023 5-Year Estimates

Track Your Costs

Renovation

Home Addition Construction

Date

April 2026

Cost

$95,000

Vendor

Your local pro

Warranty

10-year material warranty

Decatur average: $40,000–$150,000

Before

Issue documented with photos

After

Repair completed, area sealed

Materials Used

Foundation concreteFraming lumberRoofing materialsWindows and doors

Warranty Details

10-year material warranty

Auto-Checkup Created

"Addition Inspection" — every 24 months

Added by youApril 2026

Property Health Score

Good

interior category +20 pts(70 → 90)

Documentation19/25

Maintenance20/25

Warranty22/25

Investment21/25

Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.

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Find a remodeling near me

I found several remodeling contractors in your area. Here are the top results:

Professionals Found

12 results

Smith & Sons

Connected

remodeling contractor

4.9(47)

BookQuote

J&R Home Services

remodeling contractor

4.7(23)

From $95/hr

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remodeling contractor

Title:remodeling

Category:remodeling contractor

Date:2026-04-09

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Cost FAQ

What is the average cost of home addition construction in Decatur?

The average cost of home addition construction in Decatur, IL ranges from $40,000 to $150,000. The final price depends on Addition size (square footage), Number of stories, Foundation type.

What factors affect home addition construction cost?

Key factors include: Addition size (square footage), Number of stories, Foundation type, Roofing integration with existing, Plumbing and electrical scope, HVAC extension, Architectural design, Permit and engineering fees, Interior finish level, Landscaping restoration. In Decatur, local labor rates and material availability also influence pricing.

How do I get accurate quotes for home addition construction in Decatur?

Get at least 3 quotes from licensed professionals in Decatur. Use Fizbo SmartSearch to find and compare local remodelings, read reviews, and request estimates — all in one place.

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Home Addition Construction Cost in Decatur, IL

Cost Breakdown

Home Addition Construction Cost in Decatur

Material Cost Comparison

Get Quotes in Decatur

Decatur Housing Market

Track Your Costs

Home Addition Construction

Property Health Score

Get a Personalized Estimate

Cost FAQ

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