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Learn about our screening process

23 Years In Business

Company Details

  • Verified Licenses


12935 Little Antietam Road
Hagerstown, MD 21742


  • Mon: 7:00 AM - 4:00 PM
  • Tue: 7:00 AM - 4:00 PM
  • Wed: 7:00 AM - 4:00 PM
  • Thu: 7:00 AM - 4:00 PM
  • Fri: 7:00 AM - 4:00 PM
  • Sat: Closed
  • Sun: Closed
View All Details & Credentials


Service Details

  • Residential Work
  • Commercial Work

Areas of Expertise

  • Additions and Remodels
  • Building Custom Homes
  • Building Garages
  • Spray Foam Insulation
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Warranty Offered


87 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 87 results
4.5 Amy M. Boonsboro, MD

Did a wonderful job. Showed up when scheduled to be here! Very knowledgeable, and polite! Definitely would recommend them!

5.0 Craig G. Harpers Ferry, WV

They were very quick to respond to my project. Very informative and knowledgeable about their products. The guys that carried out the work were very professional and were great to work with during the project. The estimator was quick to respond and understood all my needs. I would definitely refer them 100%.

5.0 Brian K. Mount Airy, MD

Excellent company. Professional, trustworthy, smart and friendly! Did lots of extra little things that made us very happy. Will definitely hire them again! Thank you Tri-State for taking such good care of us and our wonderful old house!


This friendly and trustworthy team absolutely exceeded my expectations. This was the most pleasurable contractor experience I've ever had. There was cear, patient, honest, and thorough communication of project details & intentions and answers to my many questions. A very fair and competitive price on the quote. They handled snags and difficulties appropriately and with the utmost of care. They thoroughly cared for our home and their surroundings during the work and after completion. If I had to list a complaint it would only be that the ventilation fans were quite loud, but these industrial units left us with no lingering smells from the spray foam. Thank you!!!

4.0 Thomas A. Harpers Ferry, WV

The workers were friendly, knew what they were doing.

5.0 Steve T. New Oxford, PA

Very friendly crew. Very fast service. Went above and beyond to get my house insulated when I needed it last minute. I will definitely be calling back for future projects.

5.0 Susanna T. Biglerville, PA

Everything was excellent! Great communication, very professional. On time, in fact early! Quality of job was top notch!! Will definitely hire again!!

5.0 Bud B. Hagerstown, MD

On time. Very professional.

5.0 Cindy B. Shippensburg, PA

The guys who came out were very professional they explained what was going to happen. I had some things that were unforeseen and they came to me before they did anything, and asked me what I wanted done and just didnâ t do it in their own and charge me extra on the end. I would definitely recommend them to my friends.


Tri-State Builders
Exterior Walls
Attic Insulation
Garage Insulation
Comm. Cooler Insulation
Spray Foam Insulation
Basement Wall Insulation
Gress Residence
Traska Addition
Custom Home
Rowland Addition
Hubert Custom Home
Barber Addition
Custom Built Cherry Kitchen

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Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

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