I don't think anyone's posted this here, but the city planning office has produced this very interesting dashboard of housing production data:
https://www.portlandmaine.gov/1462/Housing-Dashboard
Some things to note:
- The 2020 "green new deal" ordinance did not, as some predicted, put an end to new housing development; 2023 was a record-setting year for housing approvals, and 2021 was the third-best year in recent history (I'd argue that the city's ongoing zoning reforms and increased state investments in affordable housing have cancelled out any added costs of the GND)
- 2015 was the city's second-best year for new housing approvals, but 1/3rd of the 1225 units approved that year were in the Midtown project.
- In most years, the median time between planning approval to completion is 2 years.
- There are 2,260 housing units that have been approved since 2020 but are not yet built, including Portland Foreside, the Bayside/Port Properties project, the co-op projects on outer Washington and in LIbbytown, and the buildout of the Catherine McAuley senior housing
- Average housing completions over the past 5 years has been around 320 units/year. That's a 1 percent growth rate for the city as a whole (which has 35,000 households). By comparison, the average annualized population growth for the entire Portland metro area for the decade between 2010 and 2020 was 0.7 percent/year.