Custom homes, thoughtful additions, remodels, and multi-family work — built across south-central Pennsylvania since 1979 by the same family. Licensed, insured, and known for finishing what we start.
Whether you're starting from a blank lot, reimagining the home you love, or developing a multi-family or commercial project, you get the same attention to detail, the same family-owned care, the same promise.
We build homes from the most basic plans to highly complicated and sophisticated designs — each one unique to the homeowner, in Lancaster, York, or Chester County.
Kitchens, baths, whole-house renovations, additions, finished basements, porches and decks — thoughtful work in homes people love, done with respect for what's already there.
Decades of commercial experience — new construction and adaptive reuse projects with architects, developers, and engineers. The attention of a family builder, backed by real commercial chops.
We meet, listen, and learn what matters most to you — quality, cost, timeline, or all three. No-cost, no-obligation estimate.
In-house design with Chief Architect 3D visualization, or thorough review of plans you bring. Refined until you can see it clearly.
A Job Foreman on site, a Project Coordinator in the office, and trusted subs and a tight-knit team.
We stand behind our warranty. Long after the last truck leaves, we're a phone call away — that's how we've stayed in business for 47 years.
"We would strongly recommend Duff Builders to anyone! Their daily management and oversight of our project was extremely reassuring. They are a great small family-owned business with time-treasured family values."John & Desi · Pool House & Custom Renovation
"They always made us feel like our home was their most important project. Our 3-yr-old still asks about them — she called them the 'neighbors,' which is actually what they felt like. Really talented, friendly neighbors."LeAnn & Andy S. · Home Addition
"It is one thing to build to blueprint; it is another to on-the-fly make recommendations that take a good project into a great one. There will always be a cup of coffee or a lemonade at our home for the Duff builders."Frank & Doreen S. · Remodel & Build-Out
"This is a family and friend run business that is hands on, and utilizes local sources as sub-contractors that are true craftsmen in their trades. Duff Builders is a turnkey solution to virtually any construction project."Don H. · MDU Project, Downtown Lancaster
Recorded over the years by homeowners we built for. Hit play.
The entire experience was a very positive one… even fun!
A++ recommendation — and you are not going to be sorry.
We've lived in our home for 18 years and still love it.
13–14 years later, we still have a sound, solid house.
We were impressed with his honesty and his friendly, professional attitude.
They stand behind their work.
Tell us what you're thinking — a custom build, a kitchen, an addition, a multi-family project, a problem you're not sure how to solve. We'll respond within one business day.
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