Additions
Designing and building 3rd and 4th floor additions is the core of our business. We’ve helped dozens of homeowners expand their Philadelphia home into the living, working and outdoor space of their dreams.
Sky's The Limit (well, 38')
The experts at 3rd Story Philly are here to help you transform your entire property from the basement up. Whether you are interested in a roof deck, basement excavation, full home renovation, or new construction, our team is equipped with the expertise to design and build a space tailored to your needs. Let us elevate your property's value and enhance the quality of life in your home.
Building Up
When moving or trading up isn't an option, it's time to build up. And there are so many reasons to do it!
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Indoor space
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Outdoor space
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Bedrooms
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Bathrooms
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Privacy
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Skyline views
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Home office
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Entertaining spaces
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Increased property value
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...and more!
Did we mention we also offer financing? Up to $500k without refinancing through our partnership with RenoFi
Philly's First Choice for Home Additions
As an award-winning home renovation and addition builder, we offer a comprehensive service that includes designing, building, and financing. At 3rd Story Philly, we understand that homeowners in Philadelphia are always looking for creative ways to maximize the space they have. Our 3rd and 4th floor addition services are tailored to meet your specific needs, whether you're looking to add a new living space, roof deck, office, an extra bedroom, or anything in between. Trust us to bring your vision to life with our expert guidance and attention to detail.
Roofdeck view from
1012 Ellsworth
3rd & 4th Floor Addition
What Will Your Story Be?
Our clients have remodeled and built 3rd and 4th floor additions for just about every reason we can think of. Here are some of their stories and the outcome of our work together.
GRADUATE HOSPITAL
1905 Catharine St.
3rd & 4th Floor Addition
Full Renovation
3 Roof Decks
FAIRMOUNT
754 N. 26th St.
3rd Floor Addition
Full Renovation
Roof Deck
PASSYUNK SQUARE
1012 Ellsworth St.
3rd & 4th Floor Addition
2 Roof Decks + Hot Tub
Full Renovation
PASSYUNK SQ.
1120 Morris St.
3rd & 4th Floor Addition
Partial Renovation
Roof Deck
Our Process
Step 1: Free Consultation
We listen to your needs and evaluate your space.
Step 2: Design & Planning
Our in-house designers create a plan tailored to your goals and budget.
Step 3: Permits & Preparation
We handle permits, inspections, and prepare your home for construction.
Step 4: Construction Begins
Our skilled crew builds your addition with minimal disruption.
Step 5: Final Walkthrough
We ensure everything meets your expectations—and ours.
Why Choose Us?
Expanding your home is a big decision. Here’s why homeowners trust us to bring their vision to life:
Experience You Can Trust
With over 15 years in the industry, we’ve completed hundreds of home additions—each one designed to enhance how our clients live, not just where they live.
Seamless Integration
We don't just build more space—we build better space. Our designers ensure your new addition matches the style, flow, and structure of your existing home.
Fully Custom Designs
No cookie-cutter layouts here. Whether you want an in-law suite, a second story, or a larger kitchen, we create plans tailored to your lifestyle, needs, and budget.
Licensed & Insured
We’re fully licensed, bonded, and insured. But more importantly, we’re known in the community for doing the job right—the first time and every time.
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Sylvia S.
3rd Story Philly is an amazing team! We have been able to create our dream home. Their experience and knowledge in Philly Row Homes has been priceless
Source: Google
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Ryan M.
On time, on budget — highly recommend this expert crew of tradesman. We've hired them multiple times and each time were very pleased with the results.
Source: Google
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Andrew S.
There's not a day that goes by that I'm not still 100% positive that we made the right decision hiring 3rd Story Philly
Source: Google
