Columbus Commons – Remediated Brownfield PHIUS+ Pre-certified

Market: Mixed Use, Multifamily
Type: Affordable mid-rise
Location: New Britain , CT
Developer/Owner: Xenolith Partners LLC + Dakota Partners Inc.
Architect : Paul B. Bailey Architect
Building Size : Two six-story buildings, 160 units, 20,000 SF retail
Certifications: PHIUS+ 2015 (pending)
Energy Star v3.1
Indoor airPLUS
Zero Energy Ready Homes
Funding : CHFA
CT Residential New Construction Initiatives

Project Background:

Columbus Commons in New Britain, CT is a high-performance, mixed-use building with 80 affordable apartments in five stories over retail space. The building will provide apartments that are highly efficient, have improved indoor environments, and are close to the community resources of downtown New Britain. Columbus Commons is very transit-oriented, being across the street from the CTfastrak, where express buses run between Hartford and New Britain as often as every 7 minutes.

Previously located on this site was a police station, and the City of New Britain completed environmental remediation of the site through the CT Department of Economic and Community Developments Targeted Brownfield Remediation Funding.

Completed in March 2020, this project is Energy Star v.3.1 certified and awaiting final certification under PHIUS+ 2015. It also met  Indoor airPLUS program criteria. Energy models predict the apartments will save 55% in utility costs, equating to an annual savings of about $1700 per apartment.

Project Services:

Steven Winter Associates is providing Passive House verification for the project and  commissioning services for the building’s HVAC and domestic hot water systems. Through functional testing, SWA will verify that the project’s energy-related systems perform efficiently, reliably, and maintain occupant comfort. The project team placed emphasis on the health and well-being of its occupants by installing energy recovery ventilators in each apartment and choosing low-emitting building materials and finishes.

Green Building Features:

  • The high performing envelope includes triple-pane casement windows, R12.5 continuous, exterior insulation, and a continuous air-barrier with enhanced attention to air-sealing.
  • Each unit will have its own air source heat pump (min 11.3 HSPF, 19.7 SEER) and Energy Recovery Ventilation (with up to 88% Sensible Recovery Efficiency) with MERV 13 filters capturing airborne particles and allergens less than one micron in size such as pollen, fine dust, pet dander, mold spores and bacteria carrying particles.

Read more about SWA’s Green Building Certification Services