484-630-3420

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Creating Beautiful Spaces
That Work For You

Creating Beautiful Spaces That Work For You

  • Downingtown, PA & Surrounding Areas
  • Call today for a Free Consultation
Our Services

We Are Home Designers That Build

We provide the best experience for homeowners to reinvent their home through a superior remodeling process. Through collaboration, creative problem solving, and an eye for design, we help you come up with the perfect floor plan for you and your family. We want you to love your space you share with the ones you love. 

From additions, to outdoor spaces, to major remodels, One Twenty One partners with homeowners to create beautiful spaces. We  believe deeply in helping others and use our business model to give back to individuals and charities. 

What makes us different
Name You Can Trust
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Core Services
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Our Simple Process

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Beautiful Home

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What We Offer

Home Additions

Whether you're adding a new mudroom or expanding your kitchen space, our team can help you dream up a functional and beautiful new space.

Major Home Remodels

Let's reimagine your home! We help homeowners bring new life to their home through smart and stunning layouts in any room of the house.

Outdoor Spaces

Entertaining and family life can be enjoyed even more in a breathtaking outdoor space. We can help you create the patio of your dreams.

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Popular Features

A La Carte Design & Build

Helpful, Knowledgable Team

Design-Centered Home Builders

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5-Star Reviews

Once we were able to see the designs, WOW! The amount of detail they were able to take from our conversation was crazy! They truly took our personality and made our basement exactly the way we thought it could be and much more. Anna has such a gift in turning an empty space into an amazing space. I would 1,000% recommend One Twenty One to anyone!
Andrew S.
Andrew S.Happy Homeowner
My husband and I were basically living a real life version of “Love It or List It” when One Twenty One Designs was recommended to us and put an end to our concerns. Spoiler alert: we’re going to “love it”!
Leara H.
Leara H.Happy Homeowner
To say this One Twenty One Design and Build met our expectations is an understatement - They EXCEEDED every expectation we had. They are in constant communication, friendly and on time with their deliverables. They gutted our basement, added a gym and bathroom, and are blown away by the end product. They took every idea we had and made it come to life! From Design to Finish A++++ Service and we can not wait to get started on our next project with them- We will NEVER look anywhere else for our design and build needs!
Tara R.Happy Homeowner
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