Comparative retrofit timelines

Installation Speed

Months of Construction
Days per Unit
Days per 1,000 SF
Syracuse Winding Ridge NZE Retrofit
(1) 2-story apartment building · 8 units · 6,522 SF · Vacant during construction
2.5 mo
Syracuse Lambreth Lane Retrofits
(2) 2-story apartment buildings · 16 units · 13,000 SF · Vacant during construction
3 mo
Boston Historic Rowhouse Retrofits
(20) 2-story attached townhomes · 20 units · 24,083 SF · Boston
11 mo
Boston High-Rise Apartment Retrofits
(2) 7-story masonry buildings · 102 units · 76,684 SF · Boston
12 mo
Brighton, MA Historic Apartment Retrofits
(1) 3-story masonry building · 33 units · 34,883 SF · Massachusetts
15 mo
Salem, MA High-Rise Housing Retrofit
(1) 10-story high-rise building · 281 units · 292,000 SF · Massachusetts
18 mo
05101520
Salem, MA High-Rise Housing Retrofit
(1) 10-story high-rise building · 281 units · 292,000 SF · Massachusetts
2 d/unit
Boston High-Rise Apartment Retrofits
(2) 7-story masonry buildings · 102 units · 76,684 SF · Boston
4 d/unit
Syracuse Lambreth Lane Retrofits
(2) 2-story apartment buildings · 16 units · 13,000 SF · Vacant during construction
6 d/unit
Syracuse Winding Ridge NZE Retrofit
(1) 2-story apartment building · 8 units · 6,522 SF · Vacant during construction
9 d/unit
Brighton, MA Historic Apartment Retrofits
(1) 3-story masonry building · 33 units · 34,883 SF · Massachusetts
14 d/unit
Boston Historic Rowhouse Retrofits
(20) 2-story attached townhomes · 20 units · 24,083 SF · Boston
17 d/unit
05101520
Salem, MA High-Rise Housing Retrofit
(1) 10-story high-rise building · 281 units · 292,000 SF · Massachusetts
1.8 d/1,000 SF
Boston High-Rise Apartment Retrofits
(2) 7-story masonry buildings · 102 units · 76,684 SF · Boston
4.7 d/1,000 SF
Syracuse Lambreth Lane Retrofits
(2) 2-story apartment buildings · 16 units · 13,000 SF · Vacant during construction
6.9 d/1,000 SF
Syracuse Winding Ridge NZE Retrofit
(1) 2-story apartment building · 8 units · 6,522 SF · Vacant during construction
11.5 d/1,000 SF
Brighton, MA Historic Apartment Retrofits
(1) 3-story masonry building · 33 units · 34,883 SF · Massachusetts
12.9 d/1,000 SF
Boston Historic Rowhouse Retrofits
(20) 2-story attached townhomes · 20 units · 24,083 SF · Boston
13.7 d/1,000 SF
051015