Top 3 custom home design services in Philadelphia, PA

Hired as a general contractor to remove our old roof and install new with added insulation and replace most of the deck while keeping businesses open. Came in on time and very close to budget. I recall the day before the nor'easter we counted 49 lasher st...

My experience was great, the staff was very helpful in answering my questions and walking me through the process. I learned a lot about roof types (there are a ton of options) and fully trusted my project manager's opinion. I wasn't thrilled about the pri...

Jason and Green Building has been more than accommodating through out the whole project. They've delivered what has been promised and made the whole process very pleasant,Highly recommend!

Jason has been a trusted colleague of mine for over 15 years. He is the only resource I call on for environmental expertise and guidance. I never hesitate to recommend him when my clients are looking for a green building consultant.

I have worked with Jason for several years. His latest project for us, a new LEED Silver laboratory building , was an excellent experience.

I've known Jason for over 20 years and he brings expert level knowledge of sustainability to any project he works on.

I've spent over the 30 years in the design and construction industry with many years as the Reg. Director - NJ Sales with Kalwall Corporation. I have known Jason for over 15 years and collaborated with him on dozens of projects primarily in the commercia...

Jason and all at Green Building are an important attribute to any construction team. I highly recommend them.

I worked with Jason Kliwinski on multiple, successful projects at the Morris County School of Technology between 2004 and 2006. He was able to incorporate various sustainability concepts into the project designs in a practical, common sense, cost-effectiv...

Jason is well educated and experienced in the world of sustainability. When considering a sustainable project, the Green Building Center connects products to the project which impacts quality and performance. Jason is also very passionate about greening...

I have an older gas fireplace and the thermopile no longer worked. I ordered a new thermopile but couldn't find anyone willing to install it. CP and his Dad called immediately and came out that day. I liked them at once and we agreed on a price to inst...

**Reference: CP Concrete and Sons - Failure to Return the $2,300 Deposit as Agreed** On July 25th, 2024, we received a quote from CP Concrete for $4,300 to furnish and install concrete in the basement family room floor at 2308 N. 50th Street, Philadelphi...