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Welcome to J. Grubbs Construction in Frederick, MD

Serving Frederick, Maryland with Quality Home Improvements Since 2003

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Our Home Improvement Services Include:

Home Additions, Decks, Sunrooms, Kitchen & Bathroom Remodeling, Basements & More

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We Offer Free Estimates

Contact Us To Get Started On Your Next Project. J.Grubbs Construction is family-owned and operated right here in Frederick, Md. Since our company opened its doors in 2003, we’ve treated every customer like they were a part of our family.

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Welcome to J. Grubbs Construction & Home Improvements in Frederick, MD


J.Grubbs Construction is family-owned and operated right here in Frederick, Md. Since our company opened its doors in 2003, we’ve treated every customer like they were a part of our family.

Read Testimonials


Our Frederick, MD home improvement services include kitchen remodeling, bathroom remodeling, basement remodeling, home additions, decks, sunrooms, light commercial work and more.

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We strive to bring the highest quality, aesthetic look and best value possible to your home remodeling project while staying within your budget. Contact us today for a FREE Consultation!

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Latest Projects

Frederick, Maryland Home Improvement Services Include

Home Remodeling


Whether your home needs extensive remodeling or simply needs an updated look and feel, J. Grubbs Construction can help guide you through the process of renovating your home, and create the one-of-a-kind solution for your space and needs.With 29 years of experience in the Maryland home building industry, J Grubbs Construction knows how to deliver the services that are important to you. We offer Effective and extensive planning of the entire project from start to finish, and quality craftsmanship in every phase of the project. Our experienced team of skilled carpenters and craftsmen can build, remodel, or repair any part of your home with precise, quality workmanship at affordable prices.

  • Remove Existing Walls to Expand Rooms Space
  • Build New Walls to Create New Living Areas
  • Install Drop Ceilings
  • Install Drywall & Insulation
  • Replacement Windows & Doors
  • Custom Stairs, Balconies, & Railings
  • Hardwood Flooring
  • Laminate Flooring
  • Porcelain & Ceramic Tiles
  • Vinyl Flooring

At J. Grubbs Construction, we strive to bring the highest quality, aesthetic look, and best value possible to your interior remodeling project while staying within your budget. Call us today at 301-846-0879 for a FREE Consultation!

Kitchen Remodeling

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Your kitchen is the heart of your home; it is the room where families and friends come together to cook, to eat, to talk, and to spend time with each other. J Grubbs Construction brings years of knowledge, design, expertise, and skill to remodel your kitchen into a beautiful and functional space that fits you and your home.

With nearly 30 years of experience in kitchen remodeling in Frederick, MD, we are confident that every detail of your project will reflect your lifestyle and personal taste, and add value to your home. J Grubbs Construction believes that every kitchen remodeling project should consist of careful planning, special attention to detail, and communication. We take special consideration of all your needs, and carefully examine every detail of your project with you to ensure your complete satisfaction.

J. Grubbs Construction kitchen remodeling services include complete kitchen renovation, custom kitchen cabinets, custom kitchen islands, granite countertops, custom tile backsplash, kitchen flooring (ceramic tile, laminate, hardwood, and vinyl), custom kitchen lighting, and more.

Give us a call today at 301-846-0879 to begin the process of making your dream kitchen a reality!  

Bathroom Remodeling

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Building or remodeling a new bathroom is one of today’s most popular home remodeling projects. Bathroom Remodeling can be an exciting opportunity to improve your home’s functionality, style, and value, as well as improve the quality of your life everyday.

Whether you need a new tub, toilet, vanity, faucets, new bathroom tile, a walk-in tub, want to convert a tub to a shower, a shower surround or tub surround a whirlpool tub or jacuzzi, a complete new bathroom design, bathtub installation or bathroom hardware installation, J. Grubbs construction is committed to your satisfaction.  We can reconfigure floor plans, move walls, fixtures and utilities to increase floor area and storage space in your bathroom or when building a beautiful new one that is unique and within your budget.

With nearly 30 years of experience in bathroom remodeling and renovations in Frederick, MD, J. Grubbs Construction offers complete bathroom remodeling services that can transform your outdated bathroom into the bathroom of your dreams! Give us a call today at 301-846-0879.

Basement Remodeling


A basement remodel can provide functional and enjoyable additional square footage to your home. Whether you plan to use it as a playroom, a family room, a bedroom, an office, or just a finished laundry and storage area, the added space of a finished basement can make a significant difference in the ease and convenience of your every day life.

J Grubbs Construction offers many years of experience and knowledge in Maryland basement finishing to ensure your complete satisfaction in your new finished or remodeled basement.J. Grubbs construction can add many features and upgrades to your basement including a bathroom, theater room, wet bar, carpeting or tile, custom lighting, and egress windows windows in bedrooms.

Contact your Frederick, MD basement finishing contractor today at 301-846-0879 to discuss the possibility of expanding your living space with a finished basement that is the perfect extension of your home.

Decks & Sunrooms


High quality decks, porches, and sunrooms add a beautiful element to your home while providing additional usable space for entertaining and relaxing.

Decks and porches are the perfect spots to spend quality time with family, friends, and neighbors while simultaneously enjoying the outdoors. J Grubbs construction offers nearly 30 years of experience and expertise in deck and porch building for many satisfied clients. We strive to be your choice for deck and porch construction in Frederick, MD and surrounding areas.

A sunroom addition is a wonderful way to bring the natural beauty of the outdoors inside your home. All of our sunrooms are constructed with high quality and energy efficient materials, and we offer a wide variety of sizes and styles of sunrooms to choose from. From patio enclosures and screen porches to solariums and conservatories, J. Grubbs Construction will create the oasis in your home you dreamed of.

Call us today at 301-846-0879 for a free consultation on a deck, porch or sunroom addition to your home! 

Home Additions


As your life changes, the space requirements in your home often change as well. Whether it be the addition of children, combining two households, the need for a home office or having space for that extra car, bike or boat, a home addition can greatly improve your home and your life.

J Grubbs Construction is committed to high quality craftsmanship in building your home’s addition, ensuring that it blends into the existing home’s style and look. We will work together with you to create a space that meets your needs and your budget.  We can add an attached or detached garage, an additional bedroom or in-law suite, kitchen or great room additions, or even add space to the second story of your existing house.

J. Grubbs Construction offers many years of experience in building home additions for our valued clients in Frederick, MD and surrounding areas.  Give us a call today at 30-846-0879 for a FREE consultation!

Testimonials next prev

  • Our Real Estate Brokerage has expanded our office space several times and John Grubbs Construction was there to complete the work. We can count on John Grubbs to not only get the job done, but do a Great job.

    Real Estate Teams, LLC

  • John Grubbs Construction has maintained renovated and improved our 12,000 square-foot commercial investment property. We were challenged with several different water penetration problems, but John was able to investigate, suggest and implement a strategy which has kept us dry to date. The initial contractor failed to properly excavate and seal part of the foundation, John strategy came in well below budget and actually enhanced the and parents of the property, both from an interior and exterior perspective.

    Real Estate Professional Center, LLC

  • John , I wanted to thank you and your subs for the outstanding and highest quality job performed when you converted one office into a kitchen space for my office staff Great job and very well done. They absolutely love it. The Best feature by far is of course the beautifully made cherry wood and glass entrance for our new office space again you and your guys are truly craftsman at all you do . John you are a great,easy going contractor who can take obstacles in stride and these things make it easy to do to business with J. Grubbs Construction.Thank you again

    Terry Kernan - Presidential Bank Mortgage Branch Manager

  • The John Grubbs Construction Company is our commercial contractor of choice. He has completed 3 renovation projects for us including a major remodel of an existing radiology office to a high-end 5 conference room settlement firm with Class “A” finishes. He overcame such unknown challenges of removal of lead walls, extra circuit transformers buried behind drywall and above ceilings installation of columns, planters and a marble foyer. His price was competitive and completed the job in a timely fashion. We definitely use John Grubbs Construction for our future projects.

    United Title Service, LLC

  • I have had work done by and have been associated with John Grubbs of J. Grubbs Construction for many years. Aside from his excellent work, John is honest, upfront, reliable and makes every effort to provide the best service and customer satisfaction to his clients. He is a hard worker and is meticulous and adamant about getting his jobs done right. He is very particular and takes great pride in his work and the finished project. I highly recommend J. Grubbs Construction and am confident is stating that he provides outstanding value for the investment.

    Bob Schiavone, Potomac Tile and Carpet

  • John completely renovated two bathrooms in our 1930s Cape. He gutted both baths, installed a 3/4 bath where there had been just a powder room and rebuilt the master bath. As with most old houses, there were lots of surprises as the project progressed. John took them in stride and had great ideas for solutions. His work is sound and he does things the right way. He communicates very well and sets the proper expectations. There was minimum mess, the project came in on budget and almost year later we are very very happy with the work. It's obvious that he is very experienced and it shows in his work. He is easy to have in your house every day for several weeks. He is just about to start our kitchen remodel. You will be very pleased with any work that John does.

    Jane Gordon

  • Skilled, professional, hardworking and honest". Those words describe John Grubbs' knowledge and dedication to his profession. For the past eight years he's been there for us, either at the door or on the phone to answer any questions and give sound advice whenever we needed him. It began when he finished a dark, practically inaccessible basement into a beautiful finished lower floor media room with extensive bookcases, crown molding and recessed lighting. Our working relationship continued when he restored us after the flooding we experienced the next year after a terrible storm. Then, in the past few years he has replaced rotting wood trim all around our townhouse and the attached screened porch, installed new bathroom fixtures, and most recently reattached all the sagging rain gutters and installed leaf guards on them all. So without hesitation, I speak from experience in giving my highest recommendation to John Grubbs for ANY construction situation--you will receive a top quality job at a fair price.

    Joan Wick

  • John Grubbs did an excellent job refinishing our basement. John planned and designed a complete living space for us out of a plain, large, cement basement room. He removed some walls and built others, opened up small window areas to make large windows that would allow easy access and bring in more natural light. He made a full beautiful bedroom with a huge walk-in closet. For the bedroom, he took care to include heat and air vents to provide winter heat and summer air conditioning within the room. All of the room was John’s design which we love. John Grubbs has completed many other projects for us, including repairs to our roof. They have all been accomplished in a timely manner and to our satisfaction. John Grubbs does everything with meticulous attention to detail. He’s a master craftsman who thinks everything through carefully. We have absolutely no complaints, only praise, for his work. He’s definitely a perfectionist and we strongly recommend him and the work he does without hesitation.

    Carol & David Baker Jr.

  • John Grubbs is the Home Improvement Contractor we call when we need improvements for the house. As a 20 year real estate veteran I’ve seen some good, some bad but mainly just unreliable inconsistent contractors. John brings a common sense and practical approach to every project. John finished our basement, remodeled our master bathroom, created custom cabinet work to accommodate a new double oven and warming drawer, repaired our deck and installed our hardwood floors. He is dependable, trustworthy and does a great job.

    Jim & Cheryl Bass

  • I’ve worked with John for 7-8 years He is very me meticulous and his workmanship is top notch . He jobsites are always very clean And well kept . John has a serious eye for detail from building an addition to installing a customers

    Terry Flaherty

  • I have used J Grubbs Construction almost exclusively for home improvement project's on my home over the past 10 years. John does excellent work, gives you a fair price, i and most important can be trusted to be in your home. I will continue to call on J. Grubbs Construction when I need contracting services in the future.

    Albert Brock

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