
A family-owned team based in Fredericksburg and serving Northern Virginia, including Manassas. You deal with the people who plan and install your project.

From GAF-certified roofing systems to energy-efficient windows and doors, we use only trusted, high-quality materials designed to perform through Virginia's changing seasons.

An EPA Lead-Safe Certified Firm, backed by a team with 25+ years of industry experience. That matters in older Manassas homes where lead-safe practices apply.

Our work is backed by a lifetime guarantee, so you can plan your project with confidence.
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Wanda Fehrman8 days agoTrustindex verifies that the original source of the review is Google.
From begining to the end. Great reps. Great personal. Friendly and respectful of my property. Clean up inside and outside. I would highly recommend them. Great Company.Posted on Google![]()
Emmy Lieser8 days agoTrustindex verifies that the original source of the review is Google.
Excellent experience working with this company. Extremely professional and kept us informed about everything. The final result was beautiful!Posted on Google![]()
Ines Thornburg15 days agoTrustindex verifies that the original source of the review is Google.
Great experience overall with our window replacement ! Professional, efficient, and high quality. Thanks to Alex, Wilmer and the whole team!Posted on Google![]()
Hiwot Zegene62 days agoTrustindex verifies that the original source of the review is Google.
Daniel Pero is a great young man who came out to look at my old doors, which were badly in need of replacement. He explained everything thoroughly and clearly, including what I should expect throughout the process. He was also fearless about speaking with his manager and advocating for me to get a great discount. I truly appreciated his effort and willingness to help. I would highly recommend Daniel to anyone looking to replace their doors. Great job, Daniel!Posted on Google![]()
Perry Lattimore69 days agoTrustindex verifies that the original source of the review is Google.
Landmarc as whole were extremely helpful and understanding with our needs and what we were trying to accomplish. The projects were on time quality materials and installation was seamless. Highly recommend and will be my window and door contractor for future projects as they arise.Posted on Google![]()
Thomaseane Brown81 days agoTrustindex verifies that the original source of the review is Google.
The installer did awesome job very neat and professionalPosted on Google![]()
Faith Bell97 days agoTrustindex verifies that the original source of the review is Google.
The product is fabulous. The engineers are thorough. And I had a fantastic experience from estimate to install. And guess what? They came through and delivered the day before my birthday. I am overjoyed. I got a cake from Benjamin!Posted on Google![]()
Sibyl Harleston97 days agoTrustindex verifies that the original source of the review is Google.
2026: Landmark just finished installing my final 4 windows today and I couldn't be more pleased. It only took 2-3 weeks for them to be manufactured and installed - much less time than I expected. Santiago once again completed the install, and he was efficient and courteous, and left the place clean. I recommend wholeheartedly! 2024: I have my new windows today and feel like I live in a new home! I am thrilled! Robbie delivered on what was promised, and the install was a week earlier than was anticipated. The quality of the windows and service was excellent. The install by Santiago was smooth and he was polite and accommodating. I plan to do my remaining windows with them and would recommend to anyone considering an upgradePosted on Google![]()
Terry E. Brown110 days agoTrustindex verifies that the original source of the review is Google.
Great service! Arrived on time and the job was done to my satisfaction. Overall, great experience; would recommend to friends and colleagues.Posted on Google![]()
Ryan Ihnken132 days agoTrustindex verifies that the original source of the review is Google.
The installers that came by were wonderful and quick. Respectful installers that cleaned up extremely well after the install. The windows look great, and we can already tell that the humidity is lower in the house and the house stays cooler! So far I'm extremely happy! Thank you.
Industry certifications earned by Landmark Windows & Doors






What exterior services does Landmark offer in Manassas, VA?
We install and replace windows, patio doors, entry doors, roofing, siding and gutters for Manassas homeowners. One team handles your estimate, installation and follow-up.
Do I need a permit or HOA approval for exterior work in Manassas?
It depends on the project and where you live. Many neighborhoods have HOA rules for exterior changes, and the City of Manassas may require permits or design review for some work, including homes in the Old Town historic area. Check with your HOA and the city before you start, and we can help you work through what your project needs.
Do you offer financing for Manassas exterior projects?
Yes. We offer financing options so you can spread the cost of larger projects like roofing or whole-home window replacement. Ask for details at your free estimate.