About Us

New Showroom

Simply Sustainable announces the re-opening of its product Showroom in newly renovated and expanded space at 67 Bridge Street, Lambertville, New Jersey. The Showroom, which features many new products, is open to the public Wednesday through Sunday, and on other days by appointment.


Our Mission is to create healthy, beautiful and sustainable spaces –whether residential, commercial or institutional— for our Clients. We provide the Products, interior design, project management services, and procurement assistance necessary to achieve our clients’ health and wellness, aesthetic and functional goals.


Lia Nielsen LEED GA, WELL APPrincipal

Lia Nielsen is an experienced construction manager and sustainable Products expert who founded Simply Sustainable, LLC in 2014. As a construction manager, Lia worked on the LEED Platinum Bank of America Tower in New York City, and the Frank Gehry-designed Peter B. Lewis Science Library and the Frick Chemistry Laboratory at Princeton University. In 2010, she joined noted green architect, Jason Kliwinski, in establishing the Green Building Center, of which she remains co-owner.

Lia is a business graduate of Boston University, and attended the Rinker School of Building Construction at the University of Florida where she studied construction management and sustainability. She is both a LEED Green Associate and a WELL accredited professional. LEED is the international standard for green buildings. The WELL Building Standard, a companion rating system to LEED, focuses on building interiors and the health and wellness of building occupants. WELL places particular emphasis on healthy and environmentally friendly building Products. Lia is one of only a small group of people who are certified to teach WELL in the State of New Jersey. She speaks frequently on healthy materials and sustainability topics.

Mary Jane Augustine LEED AP, WELL APCo-Principal

Mary Jane Augustine was formerly a partner with the law firm of McCarter & English in both its New York and Newark offices. She practiced construction law for more than 40 years, representing clients in contract negotiations on major construction projects, before joining her daughter, Lia Nielsen, as Co-Principal of Simply Sustainable in 2017.

Mary Jane’s interest in, and involvement with, sustainable design and construction is longstanding. She became a LEED Accredited Professional in 2009, one of only a handful of lawyers nationwide to hold the designation at that time. She also wrote and spoke frequently on green building topics during her law career.

Mary Jane became a WELL Accredited Professional in 2017 and received a Certificate in Healthy Materials from the Parsons School of Design in 2021.