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Learn about our screening process

97% Recommended

21 Years In Business

Company Details

  • Verified Licenses


1589 Sulphur Spring Road
Baltimore, MD 21227


  • Mon: 9:00 AM - 8:00 PM
  • Tue: 9:00 AM - 8:00 PM
  • Wed: 9:00 AM - 8:00 PM
  • Thu: 9:00 AM - 8:00 PM
  • Fri: 9:00 AM - 3:00 PM
  • Sat: 9:00 AM - 3:00 PM
  • Sun: 9:00 AM - 8:00 PM
View All Details & Credentials


Service Details

  • Small Jobs Welcome

Areas of Expertise

  • Sunroom and Patio Enclosure Construction
  • Vinyl Siding Installation and Complete Replacement
  • Multiple Window Installation and Replacement
  • Asphalt Shingle roofing Installation
  • Garages and Roofing Installation & Additions to existing structures
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Warranty Offered
  • Trip Charge May Apply
  • Credit Cards Accepted


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

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 35 reviews Showing 0 reviews
5.0 Tom K. Towson, MD

Courteous, professional, neat, and very accommodating to my suggestions. They kept me well informed on progress and engaged me in decision making. Iâ m very pleased with my decision. Nice people!

5.0 Cynthia Q. Owings Mills, MD

Project manager was very responsive to any concerns expressed and that was greatly appreciated. Carpenters are very skilled and experienced.

5.0 Barbara R. Owings Mills, MD

The work they did for me was beautiful and they left no mess! They even came out three months later to lengthen my downspout to clear the new patio I had laid down.

5.0 Ralph M. Ellicott City, MD

Very efficient and finished the project on time

4.5 Brett H. Halethorpe, MD

The installation crew did a great job. They removed the old siding, wrapped the house and installed new insulated vinyl siding. The only problem was that they ran short on material twice which added a day to the project.

4.0 Francine C. Dundalk, MD

Quite a few problems during the process but they were all resolved eventually. The quality of the work when the project was finally completed was very good. Kudos to Doug for making all right in the end.

5.0 Sj B. Columbia, MD

Great quality of work. We are very happy with the responsiveness, professionalism, craftsmanship and affordability of GTL. They are fantastic

4.5 Chris P. Middle River, MD

Overall great experience with this contractor, work quality is berry good!

5.0 Doug S. Joppa, MD

I hired GTL to add a front porch to my home, and replace the existing windows, exterior doors, siding, soffit, fascia, gutter system, and roof.From start to finish they worked as a well oiled machine with one common objective through every phase. . . make me happy! They professionally offered suggestions/options with my desires in mind, and clearly took pride in applying their skills to the highest level of excellence possible. It became apparent to me that GTL has empowered every one of their employees to do whatever it takes to insure the completed job cannot be equalled. Yet, the price they charged was in the mid-range of the bids I was considering before signing with them. It truly was a fantastic experience.

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Mack 1
Jansen and Robison
Mack 2
Miller 3
Miller 2
Miller 1

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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.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
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