4.2 
48 *The Angi rating for Treehouse Building companies in Seneca, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Treehouse Building needs.
*The HomeAdvisor rating for Treehouse Building companies in Seneca, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Treehouse Building needs.
Last update on September 05, 2025
Serving Seneca, IL and surrounding areas
Approved
In business since 1973
Free estimates
Warranties offered
"Everything went smoothly from start to finish. All questions answered in a timely manner and all issues resolved quickly and easily with full transparency"
+24
Serving Seneca, IL and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
"Brian and his crew showed up when he said they would and did an amazing job on my house. I am extremely happy with their work and would highly recommend them."
+15
Serving Seneca, IL and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Jason is top notch. Very professional and knowledgeable"
Serving Seneca, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Eric came out and power washed my deck, and it look brand new. He did a great job and I am having him to come back and fix some siding on the house for me."
Serving Seneca, IL and surrounding areas
Approved
In business since 2018
Free estimates
Small jobs welcome
"Jon came out and gave me a quick and fair estimate for the job. We just met today, I’m excited to work with him in the coming weeks"
Serving Seneca, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Frank was very professional. We had a few smaller projects that needed addressing. He installed a new doorknob for us, & also also a couple of screen covers for our exhaust & dryer vents. I was very pleased with his work & experience. I will definitely contact him again for future projects!"
+6
Serving Seneca, IL and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"To be honest Im dealing with a complicated district and I was kind of frustrated that my project was handed off to a new person but Raegan Hammon was the most patient, kind, professional and efficient Architect I have ever had the pleasure 🙏 of doing business with. Thank you for placing my project in her very capable hands. Forever grateful Leilee Keppard [*** Link removed ***]"
+23
Serving Seneca, IL and surrounding areas
Approved
In business since 2016
Small jobs welcome
Customers say: Quick response
"Mr. Lara was very nice. He explain in detail what he was going to do for my project. We went through the project's details. Before he left he gave me the price and told me the time it will take them to complete. Everything was ok except the price. It was too high. We decided to continue looking for a more affordable contractor to complete the project."
+75
Serving Seneca, IL and surrounding areas
Approved
We specialize in new builds of many kinds, garages, pole barns, flooring of all kinds interior remodel. We have over 35 years of experience in the construction business. We are a smaller company but that’s why we can give you the cheaper price
Serving Seneca, IL and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Found Sentri on Angi. Jeanette and Violet were very pleasant and efficient in getting a contractor to me in the time frame needed. The contractor was excellent and the roof looks great! I would definitely work with them again if I had additional projects."
From average costs to expert advice, get all the answers you need to get your job done.
When calculating the cost of building a treehouse, consider the size, types of materials, and design. This guide will help you figure out what to budget.
The cost of expanding your outdoor space with an elevated deck depends on the project size and the materials used. Plan your project budget with this guide.
Building a house is a complex process, and it’s important to get it right. Learn how to build a house to help make the process easier and more straightforward.
Having a small backyard doesn’t mean you have to skip out on the fun of outdoor living. Discover some small backyard ideas to get the best use of your yard.
Building a treehouse is a complex project, but with the right planning and precautions, it can be done. Learn how to build a treehouse.
If you're lucky enough to live in an Arts and Crafts style house, it's time to learn where the term comes from and what makes the architecture so unique.
