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Project 1772

25 Sixth Street

Utile

Chelsea, Massachusetts

Building Function

Multifamily
Project Type

New Construction
ASHRAE Climate Zone

5A - Cool - Humid
Construction Completion

2025
Status

Certified
INT. Conditioned Floor Area

67115 ft²

Core Project Team

Phius CPHB

Brandt Wajda
Phius CPHC (Secondary)

Nick Buehrens
Phius Certified Verifier

Sean Barfield
Phius CPHC (Lead)

Jeff Geisinger
Project Submitter

Jeff Geisinger

Project Information

- Developer
  
  The Neighborhood Developers
- Architecture Planning
  
  Utile
- Building Owner
  
  The Neighborhood Developers
- Mechanical Systems Designer
  
  Petersen Engineering, Inc.
- Additional Consultants
  
  RSE Associates, Inc. (Structural); New Ecology, Inc. (Phius Verifier)
- Construction Company
  
  NEI General Contracting
- Building Function
  
  Multifamily
- Project Type
  
  New Construction
- Number of Units
  
  62
- Number of Stories
  
  5
- Program Version
  
  PHIUS+ 2018 CORE
- INT. Conditioned Floor Area
  
  67115 ft²
- Market Category
  
  Affordable Housing
- Status
  
  Certified
- Design Certification
  
  March 4, 2022
- Final Certification
  
  July 10, 2025
- Construction Completion
  
  2025
- ASHRAE Climate Zone
  
  5A - Cool - Humid
- Region
  
  Northeast

Performance

- Annual Heating Demand
  
  1.81 kBTU/ft².yr
- Annual Cooling Demand
  
  3.13 kBTU/ft².yr
- Peak Heating Load
  
  2.69 kBTU/ft².yr
- Peak Cooling Load
  
  2.47 kBTU/ft².yr
- Site Energy Use Index (EUI)
  
  20.06 kBTU/ft².yr
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  5483 kWh/person.yr
- Air Tightness (per enclosure area)
  
  0.06 CFM50/ft²

Enclosure

- Window Manufacturer 1
  
  Yaro

Systems & Equipment

- Ventilation System Manufacturer
  
  Swegon
- Measured Ventilation Fan Efficiency
  
  0.94 W/cfm
- Heating System Manufacturer
  
  Daikin
- Cooling System Manufacturer
  
  Daikin
- Hot Water System Manufacturer
  
  Lochinvar