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Cosmo Builders, LLC

4.9(
27
)
Basement - Remodel, Kitchen - Remodel, Garage Building Service,

About us

Cosmo Builders is your area leader for all of your home remodeling needs. We know customer service is key to a job well done, and ours is the best around. When you want top quality work at an always fair price, call the professionals at Cosmo Builders.

Business highlights

10 years of experience

Amenities

Free Estimates

Yes

Warranties

Yes

Accepted Payment Methods

  • CreditCard
Our recent projects
  • 10
    Jobsite visit
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    Garage Construction DC

  • 16
    Shower Door Installation
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    Basement Finishing

  • 30
    Electric work
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    Framing and Electric work

  • 16
    shower glass door
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    Basement Finishing

  • 10
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    Roof Replacement

  • 44
    Windows Installation
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    New Custom Home Construct

  • 20
    Bath
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    Bathroom Remodeling

  • 22
    Kitchen
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    Kitchen Remodeling

  • 10
    Cosmo Team on the site
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    Commercial Project

Reviews
4.927 Reviews
Write a review
Number of StarsImage of DistributionNumber of Ratings
5
100%
4
0%
3
0%
2
0%
1
0%
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Filter reviews by service

Showing 1-25 of 27 reviews
Eric B.
Jul 2023
5.0
Google Review
Would give them 10 stars if I could. Amazing to work with - communication was clear and easy, quality is top tier, value is the best around, and they work fast too. They truly went above and beyond and I would recommend them to anybody.
Emily S.
Apr 2023
5.0
Deck or Porch Build or Replace
Yes, I recommend this pro
$5,810,000
I recently had a luxury composite deck installed with cable railing and aluminum post by cosmo deck contractor. I found Cosmo and their team honest, committed, and on-time deck builder contractors in the area and I couldn't be happier with the experience and the result. From the very beginning, the team was professional and knowledgeable, offering expert pieces of advice on deck foundation, expansion, pulling permits process from the county, and the best different materials combinations and design options They worked with me every step of the way to ensure that the design was exactly what I wanted, and the materials used were of the highest quality from trex product and muzata cable railing product. The installation process was quick and efficient, with a focus on quality and attention to detail. The final result is stunning, with a high-end look and feel that has already added significant value to my home. I highly recommend cosmo deck company to anyone looking for top-quality composite decks, custom design, and installation services. Thank you for the outstanding work!" Best luck Mohibð thank you
Torialai B.
Mar 2023
5.0
Major Home Repair (General Contractor)
Yes, I recommend this pro
$1,500,000
Mr Alkozy is a professional individual that would be my pleasure to work him again
Kris M.
Feb 2023
5.0
Major Renovation Multiple Room Service
Yes, I recommend this pro
$3,200,000
Mohib and his crew are amazing! Very clean and the craftsmanship is to notch. Would recommend Cosmo to anyone!
Scott U.
Sep 2022
5.0
Yes, I recommend this pro
$6,500,000
We hired cosmo builders to build us a 2-car garage with leaving space above the garage. Since the area we live in only has street and ally parking. For safety measures and comfortability, once we had the budget, we had Mohib and the architect came over. They explained everything slowly and meticulously. They helped us from the beginning to finish. From drawings, pulling permit, scheduling the surveyor to draw property lines, making sure there was nothing underneath, and getting the job done. His guys were here on time as promised and worked very hard and finished our garage 1 weeks ahead of schedule. Iâ m so glad we made this moveâ ¦neighbors are looking into it as well!!
Uriana K.
Sep 2022
5.0
Major Home Repair (General Contractor)
Yes, I recommend this pro
$1,350,000
The entire team did a wonderful job replacing my basement staircase with. After plummeting down the basement steps, we felt they were not safe, searched the net and found Cosmo Builders. They came out and we discussed the dimensions of the treads we wanted and the next day I had my estimate. I feel it was very reasonable for oak steps. The whole crew was extremely friendly, professional, meticulous with their work and did a great cleanup job. They were response and kept me updates with any changes due to the weather. Overall, the whole process was 10/10!!!
Keven R.
Aug 2022
5.0
Yes, I recommend this pro
$2,133,000
I recently upgraded to multiple recessed lights and a sub panel installed in my house. We wanted something new and be able to control the lights to our liking, why we switched to smart. Best decision ever! I was able to get an estimate right away. The team was very professional and did a clean job while installing all 8 lights and panel in a single day. Showed me that the lights can be controlled with my phone. The work was top notch. I would highly recommend Cosmo Builders!
Gary K.
Aug 2022
5.0
Yes, I recommend this pro
Cosmo builders completely transform one big office space into 3 private room spaces for more privacy. My team and I love what they have done. The process from drawings, pulling permits and the construction was smooth and perfectly done.We asked for some additional work be done in the middle of the remodel such as wall shelves for books and they worked with us to ensure it could all be completed on time.Our experience with this contractor was pleasant, and we continue to speak highly of them to everyone in the building. Looking forward to working with Cosmo in the future!
Maicle H.
Aug 2022
5.0
Deck or Porch Build or Replace
Yes, I recommend this pro
$2,812,000
From the moment we contacted Cosmo Builders for a quote until the time the final inspection was approved by HOA and the County, the entire team at Cosmo was nothing but professional, responsive, and patient. Mohibhelped guide us through the design and material selection, we went with composite decking due to It being easier to clean and maintain without maintenance cost. Best investment made on the home on what turned out to be a beautiful deck just in time for summer. You guys are the best
Lorence L.
Aug 2022
5.0
Find a Custom Home Builder
Yes, I recommend this pro
$4,832,000
Mohib and his crew did a fantastic job on our driveway, new walkway, and steps! My husband had very specific requests for the concrete mixture, underlayment, and finish since we have a steep driveway, and water kept getting into our garage. They went above and beyond what he wanted! Everything was done very professionally, and they did a great job cleaning up the work site! Also, they had the best quality work and price! We will be using them in the future. .I am so happy with their work. 5 stars absolutely. Thanks again cosmobuilders.
Tim D.
Aug 2022
5.0
Yes, I recommend this pro
We got a new vinyl fence installed by Cosmo Builders. Unfortunately, the old wood had to go. We walked outside one day to find our fence had been destroyed by our dog due to him keep trying to jump over. The number of times my dog has jumped over and got away, it was time to replace the fence. Mohib and his team were nothing but amazing. Not only was there install perfect, he made sure everything was how I wanted it (higher than the old fence), made sure all lines were not going to cause any damage to the property and cross the neighbors property line, The new fence definitely increases the value of my home. Thank you, Cosmo & team!
Carlos B.
Jul 2022
5.0
Yes, I recommend this pro
$1,450,000
I had my carpet that was ruined but my sons dog replaced with laminate floor by Cosmo Builders. The project manager who is very helpful, competent, and knowledgeable about flooring products. He answered my questions. He even showed me the selection where vast designs of Laminate floor, also helped me match the flooring with whatâ s in the dining room, along with recommencing leveling the floor so I donâ t have to worry about it in the future. He visited my place to make sure my floor will be done on time. The crewwas reliable, punctual, and professional. They know what they're doing. They did an excellent job updating my flooring and I'm happy with the result. I would highly recommend them. Thank you again!!
Richard S.
Jun 2022
5.0
Yes, I recommend this pro
Cosmo Builders and the team are the best I have worked with. We were looking for the complete package for our home remodeling project. A company that could provide drawings, pulling the permit and the construction work due to being on a budget and getting it completed by a certain time. We are VERY pleased with the way our house is looking. They listened to our vision and worked with us as we finalized decisions, I have had several sets of drawings that were submitted to Fairfax County approved the first review with no comments, a real testament to the quality of their drawings.Enhancing all of this is Mr. Mohibs easygoing, friendly, and approachable personality. It is clear he has patience for questions and attends to all concerns about project planning and implementation. Highly recommend!!
Name D.
May 2022
5.0
Basement - Remodel
Yes, I recommend this pro
$6,950,000
We been house searching for a while now due to needing more space and it was just not happening. I decided to add an addition of garage and finishing our basement of the house, and I do not regret it. Cosmo Builders, and their engineer gave me some great ideas for the floor plan, pulling permit, Construction materials and finishing materials around our budget. The crew did a clean and fast job and were very respectful and they complete project on time. Great experience working with Cosmo Builders. Good Luck, Dadfar
Response from

"Wow - thank you for sharing, Dadfar! Your recap of your project is exactly what we want to hear.....That we've completed the project to your high standards and that you are happy with the entire experience. You taking the time to post your thoughts means the world to us and we are thrilled that your experience with Cosmo Builders has been a positive one! Keep us in mind for your future projects! Thank you - Cosmo Builders"

Lisa P.
Apr 2022
5.0
Yes, I recommend this pro
Mohib and crew did an amazing job on our siding and new 2 new windows installation,They did everything that we asked of them and more. They were on time, neat and had great communication through the whole process. Obsessed with the new look and color selection we chose for the vinyl siding.
Response from

"Thank you for your glowing review, Miss.Lisa! I've shared your kind words with our team and I appreciate that you mentioned our performance in details. Our goal is to complete the project to your high standards and that you are happy with the entire experience. Please let us know if there is anything you need in the future! Thank you, Cosmo Builders"

Joe S.
Apr 2022
5.0
Our living room was getting a little too small for us, so we decided to go with Cosmo builders to add an addition and removal partition walls for us. after looking at the estimate. Mohib is very giving and from the looks of it he just wanted us to be comfortable and was willing to work us. It took a little longer than expected due to pulling permits but it was worth it. It turned out beautiful and cozy. My family uses the room more than the actual living room. Thank you cosmo for making it happen!
Response from

"Hey Joe! - Thank you for taking the time to post your review! We are so pleased you are happy with your new addition! Im sorry that pulling permits took a bit longer. The living room looks beautiful. Cosmo Builders & team is really happy that you and the family are satisficed. Please contact us for future projects! Thank you,- Cosmo Builders"

Robert L.
Apr 2022
5.0
Yes, I recommend this pro
$1,890,000
Iâ  ve had been in contact with many companies regarding my roofing project. Cosmo Builders was one of the first ones to send somebody to check my roof, give me a hard estimate and explain what needed to be done. After comparing estimates from four companies, I decided to go with Cosmo Builders because I loved the customer service. Mohib explained me everything about materials, the scope of the job, etc. The team was on time, worked extremely fast, and finished the job very fast. They cleaned everything after they finish and overall were extremely professional. I couldn't be happier with my new roof.
Response from

"HI Sherman!! thank you for your 5-Star Review and glowing recap of your experience with us! . We know that every roof will eventually need to be reroofed, I appreciate that you've taken the time to share your thoughts - please do let us know when you are ready for house remodeling - we will be right there to partner with you on that project as well! Thank you , Cosmo Builders"

Sophia H.
Apr 2022
5.0
Yes, I recommend this pro
I have had been in contact with many companies regarding my roofing project. Cosmo Builders was one of the first ones to send somebody to check my roof, give me a hard estimate and explain what needed to be done. After comparing estimates from four companies, I decided to go with Cosmo Builders because I loved the customer service. Mohib explained me everything about materials, the scope of the job, etc. The team was on time, worked extremely fast, and finished the job very fast. They cleaned everything after they finish and overall were extremely professional. I couldn't be happier with my new roof.Excellent professional experience with Mohib from beginning to end. The new roof makes the house look New! The roofers were courteous, respectful, and cleaned the area as they finished each day. Would rate them a 5+ if I could. Great experience working with Cosmo Builders.I recently worked with Mohib from COSMO BUILDERS on roof replacement with asphalt shingleroof,  I would have to say the whole experience was excellent. Mohib was responsive, knowledgeable, and professional throughout the entire process. Exceeded my expectations at every step. It is hard to find service professionals you can trust these days, but after working with Mohib and his crew they now have a customer for life. Thanks for the quality work and the professional experience. Highly recommend.
Response from

"Hi Sophia! We are so glad you loved our services, Cosmo Builders is here for you and your needs! We are so happy that your vision has come to a reality. We look forward to working with you again should you need services in the future. Thank you, Cosmo Builders"

Sophia J.
Apr 2022
5.0
Basement - Remodel
Yes, I recommend this pro
$6,250,000
Cosmo builders and their crew are professional. They just had remodeled our basement from unfinished to finished basement and added a bathroom, washer dryer, Living room and office space for me. From the beginning of design and permit process Mohib has been incredible to work with. He is honest, hardworking, accommodating of my (endless) requests, and a perfectionist! He took care of several issues we came across (due to the house) without adding any stress or additional cost. and what a surprise for us when we go in to check and it is a hundred times better than we could have ever had imagined. Initially, we had so many ideas for the basement, and it was hard for us to choose, so we let the construction company decide on some indecisive aspects that my wife and I had, and we could not have made a better choice. Will certainly use their services when we decide to refurbish another part of the house
Response from

"Hello!!! Thank you so much for the feedback, we really appreciate it. It is gratifying to hear how much you enjoyed working with us, and I hope we exceeded your expectations. We always strive to keep our projects on time and on budget, and I'm glad that our efforts were so successful on your project Can't wait to work with you guys again! Take care Best, Cosmo Builders."

William R.
Apr 2022
5.0
Yes, I recommend this pro
Mohib and the guys at cosmo builders are amazing. They are so easy to work with and their work quality is impeccable. We have had them work on our house twice now. The first time we hired them to change hardwood flooring for our living room, the second project we hired cosmo for our master bathroom remodel and extension, because old bathroom was the worst part of the house for me. Not because I do not like its functionality, of course, but because it was just an old sad place that had been done more than 30 years ago. Now we have new fixtures, bigger space with new tub and new appliances and they even moved around some walls to gain extra space! Could not be happier!
Response from

"Hello, It was a pleasure working on our flooring and master bathroom. Thank you for trusting us with your project. It is clients like you that make our work truly joyful and rewarding. Looking forward to helping you with many other projects. All our best to you, Cosmo Builders."

Shireen J.
Apr 2022
5.0
Major Renovation Multiple Room Service
Yes, I recommend this pro
The builder was responsive, timely, professional, and grasped all our goals quickly without wasting time. The builder then converted our goals to technical specifications, took complete ownership of the project, and executed every phase smoothly and delivered an excellent finished product and service. We’ve used this company for varied types of projects and the professionalism was consistent across project types. I highly recommend this company!
Response from

"Hello Shireen! Thank you so much for thinking of us and setting the time out of your busy day to review us. Serving our customers is a joy and responsibility that we are proud of and that we take very seriously. Our crew is thrilled that you loved your experience with us and the end results. Wanted to thank you for coming back to us for more projects. We love working with you! Best, Cosmo Builders All our best to you,"

Helmand I.
Feb 2022
4.5
Find a Custom Home Builder
Yes, I recommend this pro
$65,800,000
We loved working with Cosmo builders on our new custom home construction The cosmo team and their sub were very professional, patient & helpful on every step of the process starting from first estimating, understanding of our budget needs, customization of the finishing materials, Fixtures choice based on our budget. also they were a great advisor for me during the process on the selection of materials, design, colors and electrical fixtures. moreover, they created a modern and customized beautiful bathrooms and kitchen that was just what we wanted. despite that, the crews were very polite, technical and passion for the quality work. with help of our contractor cosmo builders, we have unique house floor plan and a clean interior house design while the building process took little bit more time than normal! but it's okay because we end with satisfaction, We have been extremely happy with the quality and craftsmanship. I definitely recommend cosmo to anyone who are looking for right contractor to redesign/build or manage residential project,and i hope to work gain with them soon on our third investment project in the future again.
Response from

"Hi Helmad! Thank you for your kind words. It was truly a pleasure working with you. You have a beautiful home. Hope to build another home for you someday! Our team is always at your service. Thank You, Gary & Robbie Woerner Woerner Custom Builders Thank You, Cosmo Builders."

Paul T.
Jan 2022
4.5
Basement - Remodel
Yes, I recommend this pro
$4,108,000
We interviewed several contractors before we decided to work with Cosmo Builders because they were quick to respond to our inquiries and nicely explained the building and permitting process in the first free consultation. At the end of the bid evaluation, I found the Cosmo estimate more reasonable and the full detailed cost estimate clearly stated, from plumbing, electricity, drywall, HVAC, etc., to finish. Also, during construction, the owner, Mr. Alkozay, was extremely helpful in the selection of finishing materials and fixtures based on our budget. They just transformed our unfinished basement into a finished one by adding a kitchen, full bathroom, laundry, office space, a family room, and a gym. The Cosmo management team was excellent and truly helped us manage our vision and budget. On our building journey, they did excellent work. I highly recommend the Falls Church neighborhood.
Response from

"Thank you, Paul, for the review and opportunity to work with you. We hope your family gets many years of enjoyment out of the basement. We are so happy that your vision has come to a reality. Please enjoy your new space! Call us if you need anything! Best, Cosmo Builders"

Ahmad Morid S.
Jan 2022
4.5
Yes, I recommend this pro
$1,650,000
I contacted COSMO Builders for remodeling of a bath and they helped us with the whole process, working with the same people the whole time from initial design until final completion. Their recommended was better than anticipated and they were great to work with throughout the process. They were done ahead of schedule and stayed on budget. They are responsive and working very friendly I enjoyed working with them .
Response from

"Hello Ahmad! Thank you so much for your review, means it a lot. We enjoyed working in your home and are so happy that you love the work. Thanks again and please consider us again for future projects. Best, Cosmo Builders."

Robert J.
Jan 2022
4.5
Addition to Existing Structure Building Service
Yes, I recommend this pro
$6,530,000
I have used Cosmo builders for my three story Addition project including added a room and bathroom to the basement and painting whole of my basement. our project finished on time, on budget and with minimum stress along the way. Overall they did wonderful job on my house, I would recommend them for remodeling project any size. Thanks
Response from

"Thank you so much for this stellar review! We?re so glad you had a great experience. We really enjoyed working with you, and we loved how the project turned out too! We look forward to working with you again should you need services in the future."

Showing 1-25 of 27

Licensing

Licensed*

Trade License Number

2705171011

Trade License Locale

VA

Trade License Expiration

03/31/2026

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Cosmo Builders, LLC is currently rated 4.9 overall out of 5.
Monday: 9:00 AM - 6:00 PM Tuesday: 9:00 AM - 7:00 PM Wednesday: 9:00 AM - 7:00 PM Thursday: 9:00 AM - 6:00 PM Friday: 10:00 AM - 5:00 PM Saturday: 1:00 AM - 4:00 PM Sunday: Closed
Cosmo Builders, LLC accepts the following forms of payment: CreditCard
Yes, Cosmo Builders, LLC offers free project estimates.
No, Cosmo Builders, LLC does not offer eco-friendly accreditations.
No, Cosmo Builders, LLC does not offer a senior discount.
No, Cosmo Builders, LLC does not offer emergency services.
Yes, Cosmo Builders, LLC offers warranties.

Contact Information

1640 Boro Place, Fourth Floor, Mclean, VA 22102

Service Hours

Sunday:Closed
Monday:9:00 AM - 6:00 PM
Tuesday:9:00 AM - 7:00 PM
Wednesday:9:00 AM - 7:00 PM
Thursday:9:00 AM - 6:00 PM
Friday:10:00 AM - 5:00 PM
Saturday:1:00 AM - 4:00 PM
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