Residential Home Improvements - Additions & Buildings

Your Full-Service Home Addition Contractor

Increase your home's square footage and resale value with our complete home addition contracting services.

Home additions are a popular way to give your home more living space while increasing its value. Whether you're considering adding a new kitchen, a new bedroom, an office, or a suite for the in-laws, our decades of contracting experience ensure your beautiful new addition is seamlessly integrated with the layout and aesthetic of your home.

From design and worksite preparation to finishing touches and cleanup, our experienced contractors are by your side every step of the way, taking care of all aspects of your new addition, including flooring, plumbing, electrical, and more.

Give your new home addition the care and attention to detail it deserves, with a trusted full-service contractor that has been serving the Butler PA and Greater Pittsburgh Region since 1999!

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Our entire selection of incredible flooring options are installed quickly and cleanly by our experienced flooring experts, including ceramic, hardwood, laminate, and more.


Kitchen, bathroom, and in-law suite additions require a good deal of plumbing. With us, there's no need for multiple contractors - our experienced plumbers take care of everything, from integrating new lines and valves into your existing plumbing system to installing your beautiful new fixtures and ensuring that the water pressure and temperature are just right.


Our professional electrical contractors provide a layout that allows for plenty of receptacles for all your appliances and devices, while ensuring that your new addition is safe and up to code with the latest wiring devices and installation methods.

Find out why the Greater Pittsburgh region has trusted us with its construction and renovation needs for over 20 years. Contact us now for a free estimate.

Thank you for your interest in Zillweger Contracting.

Please fill out the following form and we will contact you shortly*. We look forward to connecting with you soon!

*We do not give estimates over the phone or online. Meeting with you, examining your home, and understanding your specific needs is the best way to develop an accurate estimate for your home project.

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