Addition Services

1-Year Labor Warranty

Quick Turnaround Time

Over 30 Years of Experience

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Expert Additions by Greenline Construction

Looking to expand your living space? Greenline Construction Inc, serving northeastern Dane and the surrounding counties, specializes in creating beautiful, functional additions to your home. Whether you need more room for a growing family or a dedicated space for work, our experienced team is here to bring your vision to life. We offer a wide range of services, including:


  • Design and planning
  • Room additions
  • Second-story additions
  • Basement and attic conversions
  • In-law suites
  • Accessory dwelling units
  • Home office
  • Study additions


Call (608) 212-8586 today to discuss your project and find out how we can help.


Why You Need Our Addition Services

Expanding your home can provide numerous benefits, from increasing property value to enhancing your quality of life. Here’s why you should consider our addition services:


  • Maximize your living space
  • Accommodate a growing family
  • Create a dedicated home office
  • Convert unused spaces into functional areas
  • Add value to your property
  • Enjoy a seamless integration with your existing home


Reach out to Greenline Construction to explore your options and start planning your home addition.


Benefits of Choosing Greenline Construction

When you choose Greenline Construction, you’re not just getting a contractor; you’re partnering with a team committed to excellence. Here’s what sets us apart:


  • Since 2008
  • Eco-friendly building practices and materials
  • Family and locally owned and operated
  • Labor warranties available
  • Large team of licensed professionals
  • Over 30 years of experience
  • Premium customer service
  • Price matching available with a written quote
  • Prompt follow-through
  • Quality materials
  • Quick turnaround time
  • Reliable services
  • Seamless craftsmanship
  • Service time provided after consultation with a staff member
  • Service time is subject to change
  • Transparency
  • Vast field experience
  • We handle required building and construction permits
  • Work directly with the owners


Contact us today to experience the Greenline Construction difference.


Contact Us

Ready to transform your home with a stunning addition? Get in touch with Greenline Construction. Our team is eager to help you create the perfect space to meet your needs.

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We Offer Complete Addition Design and Planning Services

Let us put our more than 30 years of addition building experience to work for you.

Call Greenline Construction Inc today.

(608) 212-8586

(608) 212-8586

Reliable Services

1-Year Labor Warranty

Get a 1-year labor warranty when you hire Greenline Construction Inc for any service.

Schedule your free estimate today.

(608) 212-8586

(608) 212-8586

Next-Day Estimates

Free Estimates

Greenline Construction Inc offers free next-day estimates with all services.

Schedule your free estimate today.

(608) 212-8586

(608) 212-8586
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