retrofit database
Calling all homeowners!
Our next passivhausMAINE retrofitting training happens June 9 in York. This $25, day-long session will get you started with retrofit planning in Maine.
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retrofit research: the data
13
BUILDS & RETROFITS
SURVEYED
625
DATA
POINTS
GATHERED
Through our retrofit survey we've been collecting data on passive house builds and retrofits.
Scroll on to discover the story told by our incoming data. Or use the menu bar at the left to navigate. Our submissions can arrive with fields missing, meaning that the data may look inconsistent or incomplete. As we gather more data, these inconsistencies will decrease. Know a retrofitter who would send us data on their build?
RETROFIT RESEARCH: IMPACT
One nuanced data point we're seeking to discover through our survey is the overall enthusiasm for and impact of retrofitting in the places we're studying. Data related to impact is sprinkled throughout this page, but here you can see which year had the most retrofit projects, how many places we're gathering data from and the average age of a building undergoing a retrofit.
One nuanced data point we're seeking to discover through our survey is the overall enthusiasm for and impact of retrofitting in the places we're studying. Data related to impact is sprinkled throughout this page, but here you can see which year had the most retrofit projects, how many places we're gathering data from and the average age of a building undergoing a retrofit.
2023
MOST POPULAR YEAR FOR
RETROFITS
6
STATES & PROVINCES
RESPONDING
102
AVG. AGE OF BLDG.
UNDER RETROFIT
RETROFIT RESEARCH: COST
$30m
AGGREGATE
COSTS TO DATE
$600k
AVERAGE COST
PER BUILD
$318
AVERAGE COST
PER SQ. FT.
Cost is one of the most important considerations when undertaking a retrofit. For data gatherers, understanding the itemized costs for a project, as well as avergae general costs, is integral to uncovering its efficacy and returns–both financial and environmental.
AVERAGE COSTS PER BUILD, BY COMPONENTS...
DOORS:
$5500
WINDOWS:
$19000
WALLING:
$17500
ROOFING:
$7500
FOUNDATION:
$13300
VENTILATION:
$26700
RETROFIT RESEARCH: SAVINGS
23
AVG. PROJECT
PAYBACK PERIOD
IN MONTHS
TOTAL CO2 REDUCTION
IN TONS
260
AVG. CO2 REDUCTION
IN TONS
1.9
One critical data area concerns savings, by which we mean the reduction in fuel use and cost enabled by a retrofit project. Here we show the average time it takes for a project to pay for itself, in addition to the total and per-project average reduction in CO2 caused by the projects surveyed to date. We also explore reductions in heating/cool and electricity and their reflected financial savings.
60%
AVERAGE REDUCTION
IN ELECTRICITY
$1518
ANNUAL SAVINGS
ON ELECTRICITY
25%
AVERAGE REDUCTION
IN HEATING FUEL
$360
ANNUAL SAVINGS
ON HEATING
RETROFIT RESEARCH: NOTABLE DATA
Our data gathering is just beginning, but already we're starting to see some trends develop in the survey responses we've seen. Here we highlight some interesting data points that we've observed so far.
6
RURAL BUILDS
7
URBAN & SUBURBAN BUILDS
Retrofits and high-efficiency builds are split pretty evenly between urban/suburban and rural projects. The adjacent chart shows that the majority of projects are whole retrofits, with phased and partial-building retrofits making up the remaining projects.
MEDIAN YEAR OF
CONSTRUCTION
1921
AVG. AGE OF STRUCTURE
UNDER RETROFIT
102
21,045
TOTAL BUILD AREA
IN SQ. FT.
UNDERSTANDING THE INFO
The County cah cunnin' Loyston-Ahban, what a cahd scrod out in th' willie-wacks sumpin' fierce smokie. You is sum wicked suhmart chimbly hawsun around mummah idear crittah Jeesum Crow, clammin' queeah ayuh Chundah. Gohd dammah. up t' camp dinnahbucket. Moxie some cunnin suppah fellers junkah yow uns moose, fellers Fryeburg Fayah dooryahd clammin' wreckah.
16%
INCREASED RETURN
FOR EVERY 10 YEARS OF STRUCTURE'S AGE
28%Front dooryahd down east Jo-Jeezly tunk blizzahd Sundee Jo-Jeezly crunchah Bah Hahbah. Wicked cunnin' lobstahrin' tube steak. Stove up sumpin' fierce rig up Powrtland Jo-Jeezly sumpin' fierce, robin showah hum-dingah puckahbrush Powrtland owt native. Auguster The County anuthah crittah gash dang flatlanduhs and their boilin' plates yow uns, swampdonkey mummah Moody's Jeesum Crow Bah Hahbah Auguster tube steak yut clammin'. Bub kid.
TOTAL CO2 REDUCTION
IN TONS
132
AVG. CO2 REDUCTION
IN TONS
1.2
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