Service Areas

Design And Build Services To Enhance
Your Great Falls, VA, Home

Let Us Handle Your Remodel To-Do List

Trying to get all the items on your to-do list done for your Great Falls, VA, home is difficult without the help of design and build services. Luckily, we are here to provide stellar service for all your design and build needs.

Milcon Design & Build has been serving the Fairfax County area for years, providing numerous design and build services to help you get your home looking spectacular. Plus, many of our services will also help improve your energy efficiency!

We are the go-to call to make when you need window, door, siding, gutter, roof replacement, and trim work. We do it all so you can rest easy knowing the professionals have your home handled and it is in good hands.

Trusted Design & Build Services
For Great Falls, VA

Roofing, Windows, Doors, Trim, Siding, & Gutters


When it comes to roofing, we provide the best asphalt roofing in the industry. We only use GAF roofing systems which ensures your home is protected. Plus, they are gorgeous once installed, helping increase curb appeal.


We install CertainTeed siding on homes in the Great Falls, VA, area. Why CertainTeed? It is durable, has a guaranteed lifetime of performance, is maintenance-free, and is available in over 40 color options.


We proudly deal exclusively with RJT Industries for all our window replacements. Why RJT? Because they are made right here in Virginia for the weather we experience.

There are a variety of styles to choose from, so homeowners can easily find something that fits their needs and the overall look they are going for with their home.


We offer several door replacement options, including steel and fiberglass entry and patio doors. We utilize the doors from ProVia as they have been shown to hold up well over the years in the Northern Virginia weather.

Our vinyl patio doors are from RJT, the trusted manufacturer we use for window replacements.


We do all the trim work necessary when replacing siding, doors, or windows. The trim is a vital component of ensuring your new upgrades function flawlessly. You can expect the same level of perfection with our trim as you would with the siding, door, and window replacement process.


We offer aluminum gutters in both five and six-inch sizes. With the proper gutter system in place, your roof will function even better, offering another layer of protection to your home.

Why Our Design And Build Services Are In High Demand

We Are The Specialists To Handle Your Job

Installation Specialists

The members of the team at Milcon Design & Build all have their specialties. This means we have crews that only work on roofs, those who install siding, and some that only work with windows. By specifying what people do, they do it at the best level!

Respect & Courtesy

We value being personable, polite, and approachable when dealing with any design and build job. This extends to the clean-up process when the work is done. When we are finished, the only sign we have been at your home is the new look of your home.

We Use The Best Materials

We stand out from the competition because we don’t believe in installing substandard materials. That is why we work with specific manufacturers. We want our customers only to have the best installed in their homes.

No Elaborate Sales Pitches

No one wants to feel pressured regarding the design and build services their home may need. That is why we don’t charge for quotes, and we email you our findings, so you can decide in private how to proceed. However, we are still here to answer your questions without pushy sales tactics.

Let’s Hear From Our Wonderful Milcon
Design & Build Customers

Customer Service Is Always A Must

Kimberly M.

We would definitely recommend Milcon to anyone

In June, we had all the windows in our house installed. Our previous windows were at least 30 years old and were in poor shape. Out of the three quotes we received, Milcon Design & Build were the most straight forward and to the point, best value, and had the earliest install date.

On the date of install, everyone was fast, efficient and very friendly. The windows were installed without a hitch and my husband and I were amazed at the difference—the decrease in sound, the quality of the windows—we actually had to turn up the air because the house got so cold because the cold air was actually staying in the house!

After the install, Matt came and inspected the windows and ended up replacing two that didn’t pas his expectations. We couldn’t be happier. We would definitely recommend Milcon to anyone and plan to use them again in the future.

Mark J.

Communicative and fantastic to work with

Matt and team were great to work with. I am an engineer by trade so, naturally I had a ton of questions. Matt did a great job of answering them all and putting me at ease knowing I was getting a great product at a great value. We had a new architectural roof and 37 windows installed on our home. Both crews were communicative and fantastic to work with. Highly recommend!

Russel R.

I would 100% recommend Matt and his team

Matt and his team did a phenomenal job from start to finish. He provided a cost-effective, detailed estimate for my roof and even added in an active duty military discount! On the day of the job, he provided updates continuously and photo proof. Unfortunately some of the plywood underneath my roof was rotted and I had a small over-hang that needed to be completely reframed due to the rot. He was able to provide me with estimates for different avenues of approach to repair these.

We ended up doing a demo to the overhang at no additional cost. This was one of the most pleasant and professional experiences that I’ve ever experienced. I would 100% recommend Matt and his team to anybody in the area.

Design And Build FAQ

Does Milcon Design & Build offer financing?


At Milcon Design & Build, we understand investing in your home's exterior can be a significant undertaking. That's why we offer flexible financing options to our customers in the DMV area.

We're committed to making our top-quality siding, windows, and entry door services more accessible and affordable for you.

How do I prepare for my exterior remodel?

Aside from your initial call and having owner Matt Kavanah take care of your zero-pressure consultation, and prepare your home for the install… not much!

It’s a process designed to leave you feeling no stress yet in the know about the entirety of your exterior remodel – every step of the way.

What is your process of window replacement like?

Our window replacement process starts with an easy consultation, where we assess your needs and offer you an initial quote. Our professionals then take precise measurements to ensure a snug fit.

Once the windows are ready, we schedule an installation date. On the day, our skilled team carefully removes the old windows, installs the new ones, and performs a thorough clean-up afterward.

One thing you can be sure of is a professional, respectful, and friendly installation.

What makes Milcon Design & Build’s vinyl siding superior?

Our partnership with CertainTeed ensures we provide you with industry-leading vinyl siding, known for its PermaColor™ Lifetime Fade Protection – which ensures vibrant color for decades. Our siding also boosts thermal efficiency, potentially reducing energy loss by up to 20%.

Get A FREE, 30-Minute Quote (Yep. Just 30 Minutes!)

Ready to “cut the fluff” and get a no-nonsense Northern Virginia exterior remodel starting with a stress-free, 30-minute, no-obligation quote from the owner himself?
Then call us at 703-581-2761 or fill out our hassle-free form to schedule your free quote today!


Wait! You haven’t requested your FREE 30-minute quote yet!*

No pressure. No hassle. No obligation.

*On any roof replacement project. All final quotes sent through email correspondence.

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