Home Addition Services

Gallatin County, MT

Free Estimates

In-House Design Team

1-Year Workmanship Warranty

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Transform Your Living Space with a Home Addition

Enhance your home's functionality and value with expert home additions from DeHaan Construction Inc. We specialize in creating seamless expansions that perfectly complement your existing structure. Our services include:

  • Room additions
  • Second-story additions
  • Garage conversions
  • Sunrooms and conservatories
  • In-law suites
  • Kitchen expansions
  • Master bedroom additions


Ready to expand your living space?
Reach out to us for a personalized consultation.


Maximizing Your Home's Potential

Home additions offer numerous benefits for homeowners in Gallatin Valley, MT and surrounding areas:

  • Increased living space without moving
  • Improved property value
  • Customized solutions for growing families
  • Enhanced functionality and flow
  • Opportunity to modernize outdated spaces
  • Additional storage options
  • Potential for rental income with separate living areas


Our experienced team at DeHaan Construction will guide you through the entire process, ensuring your home addition meets your specific needs and enhances your lifestyle.


Why Choose DeHaan Construction

When it comes to home additions, DeHaan Construction stands out as the premier choice in Gallatin Valley, MT:

  • Over 40 years of construction experience
  • Free estimates for your project
  • 1-year workmanship warranty
  • Comprehensive liability insurance coverage
  • In-house design team for cohesive planning
  • Assistance with insurance claims
  • Handle all required permits
  • Provide detailed project timelines
  • Locally owned, family-operated, and veteran-led
  • Commitment to superior quality workmanship
  • Treat every project with the care of our own home


Our dedication to excellence and customer satisfaction sets us apart in the home addition industry.


Contact Us

Ready to expand your home and improve your living space? DeHaan Construction is here to turn your vision into reality. Our team of skilled professionals is prepared to guide you through every step of your home addition project, from initial design to final construction.


Don't wait to start creating the home of your dreams.
Contact us today to schedule your free estimate and discover how we can transform your home with a custom addition.

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1-Year Workmanship Warranty
We stand behind our work. Our warranty ensures your project is built to last, giving you peace of mind long after we've finished.
Get quality construction you can trust

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