- 1640 Boro Pl 4th Floor, McLean, VA 22102
- Commercial Roofing
- Industrial Roofing
- Residential Roofing
- 24/7 Emergency Repairs
- Financing Available
At Cosmo Builders, we take pride in our versatility and technical expertise, delivering exceptional results for both residential and commercial projects. Located in McLean, Virginia, we specialize in a comprehensive range of services, including roof maintenance, roof deck repair, roof coating, roof waterproofing, and roof gutter repair. Our ability to manage complex projects from start to finish sets us apart in the industry. Our well-coordinated team is dedicated to organization and attention to detail, ensuring that every aspect of your project is handled with care.
We understand the importance of consistent communication and reliability throughout the construction process. Whether you are looking to enhance your home with an addition or require specialized roofing solutions, we are committed to providing durable, high-quality results that offer long-term value. With a focus on thorough project coordination, we ensure that no detail is overlooked, allowing us to deliver on our promises and exceed expectations.
Cosmo Builders has received overwhelmingly positive feedback from customers, highlighting their professionalism, effective communication, and timely delivery of projects. Many reviews mention that the team kept clients informed throughout the process and managed everything from design to construction efficiently. The quality of work, attention to detail, and adherence to schedules are frequently praised, making the overall experience smooth and stress-free. However, there is a notable negative review regarding customer service, specifically related to communication issues and perceived harassment, which suggests a need for improvement in this area.
- The team was respectful, on time, and kept us updated every step of the way.
- Their attention to detail and understanding of local codes made everything stress-free.
- Cosmo Builders handled everything, from the design plans to pulling all the permits, and completed the entire construction smoothly.
- Their communication was excellent, and they made the entire process smooth and stress-free.
- The project started, ended, and costs as promised.
- Cosmo Builders called me from another phone number and continued to harass me.
- They never replied to me when I asked them if it was 3pm or 3:30pm.
- I will call the police if harassment continues.

We needed a reliable contractor for a tight deadline, and Cosmo Builders delivered without compromising quality. Thank you for the hard work!

The team was respectful, on time, and kept us updated every step of the way. The new family room and bathroom turned out better than we imagined. If you're looking for a home addition contractor near me or reliable home builders near me, I highly recommend Cosmo Builders.

We had a great experience working with Cosmo Builders on our home addition project in McLean, VA. They handled everything—from the design plans to pulling all the permits, and completed the entire construction smoothly.
- 1640 Boro Pl 4th Floor, McLean, VA 22102
- Commercial Roofing
- Industrial Roofing
- Residential Roofing
- 24/7 Emergency Repairs
- Financing Available
The average roof replacement cost for a residential home typically ranges from $7,000 to $15,000, depending on factors such as roof size, chosen materials, roof pitch, and labor rates in your area. Premium materials or complex designs may increase the price.
The cost to replace the roof of a commercial building typically ranges from $5 to $12 per square foot, depending on several factors such as roof size, material, labor rates, building type, and local code requirements.
Several factors influence roof repair cost, including the extent of the damage, roof accessibility, material type, labor costs, and whether it’s a general repair or an emergency fix. Minor repairs can start around $150–$400, while major repairs may exceed $1,500.
Roof leak repair cost generally ranges from $300 to $800, depending on the size and location of the leak, the materials required, and labor intensity. Complex leaks involving structural repairs or interior damage will cost more.
Flat roof repair cost for commercial properties usually ranges from $500 to $3,000, depending on the roofing material (TPO, EPDM, PVC), the extent of the damage, and roof accessibility.
Mobile home roof replacement cost typically ranges from $3,000 to $8,000, making it generally more affordable than traditional home roof replacements, due to smaller size and simpler structure.
It's not necessary to stay home during roof replacement. Roofing work is noisy and can cause vibrations inside the house, which might be uncomfortable. Most homeowners choose to leave during major parts of the project, but our team ensures safety and keeps you updated, whether you're home or not.
The timeline for a roof replacement typically ranges from one to three days, depending on the size and complexity of the roof, weather conditions, and material type. Larger or more intricate roofs may take a bit longer, but we always aim for efficient, timely completion.
To hire a roofing contractor, start by researching local companies with good reviews and proper licensing. Request quotes from multiple contractors, verify their insurance and certifications, and ask for references. Always ensure you get a written contract that outlines the scope of work, timeline, and payment terms.
Check if a roofing company is legit by verifying their business license, insurance, and local certifications. Look for memberships in professional associations, read customer reviews, and ask for recent project references. A legitimate company will be transparent and provide all documentation upon request.
When choosing a roofing company, consider their experience, customer reviews, warranty offerings, and quality of materials. Make sure they provide clear communication, detailed estimates, and a solid portfolio of completed projects. Local expertise is also a major advantage for understanding regional roofing needs.
Warning signs that your roofing contractor might be ripping you off include vague contracts, pressure to pay large upfront deposits, lack of proper documentation, and unexplained price increases. Always ask for itemized estimates and written guarantees, and avoid contractors who avoid answering your questions directly.