Home Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost HelenaHome Addition Construction Cost Helena

Home Addition Construction Cost in Helena, MT

Detailed pricing guide with local market adjustments and material comparisons

Helena Average

$34,000–$127,500

Market Tier

Small City

Cost Breakdown

Home Addition Construction Cost in Helena

Small City

LowAverageHigh

$34,000$80,750$127,500

Market Tier

Small City (0.85x)

Small city with below-average costs

Material Cost Comparison

Foundation concrete(Budget)

$25,500–$95,625

Framing lumber(Mid-Range)

$34,000–$127,500

Roofing materials(Premium)

$47,600–$178,500

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

Get Quotes in Helena

Founding Member

Premium spot in Helena

Ambassador

Lead the Helena community

Founding Member

Premium spot in Helena

Search for remodelings in Helena →

Helena Housing Market

Median Household Income

$69,341

Median Home Value

$355,100

Median Rent

$1,058/mo

Homeownership Rate

53.8%

Population

33,126

Median Year Built

1975

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

Track Your Costs

Renovation

Home Addition Construction

Date

April 2026

Cost

$80,750

Vendor

Your local pro

Warranty

10-year material warranty

Helena average: $34,000–$127,500

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(74 → 94)

Documentation19/25

Maintenance20/25

Warranty22/25

Investment21/25

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

Track this repair in PropDoctor →

Get a Personalized Estimate

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

MessageView

View All in ProPortal

Log my home addition construction in PropDoctor

I'll help you log this. I've pre-filled the details — review and submit:

Add to Property History

remodeling contractor

Title:remodeling

Category:remodeling contractor

Date:2026-04-08

Fill Form & Review

Fill Form & Submit

SmartSearch understands 51 action types across scheduling, vendor discovery, and home maintenance.

Try SmartSearch →

Cost FAQ

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

The average cost of home addition construction in Helena, MT ranges from $34,000 to $127,500. 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 Helena, local labor rates and material availability also influence pricing.

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

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

Explore Helena, MT

Homes for Salein Helena Rentalsin Helena Home Servicesin Helena Maintenance Guidesin Helena Find Professionalsin Helena

Home Addition Construction Cost in Nearby Cities

East Helena, MT Clancy, MT Boulder, MT Jefferson City, MT Basin, MT Elliston, MT

Home Addition Construction Cost in Helena, MT

Cost Breakdown

Home Addition Construction Cost in Helena

Material Cost Comparison

Get Quotes in Helena

Helena Housing Market

Track Your Costs

Home Addition Construction

Property Health Score

Get a Personalized Estimate

Cost FAQ

More Cost Guides for Helena

Full Roof Replacement Cost

HVAC System Installation Cost

Foundation Crack Repair Cost

Kitchen Remodeling Cost

Bathroom Remodeling Cost

Explore Helena, MT

Home Addition Construction Cost in Nearby Cities