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I’ve updated an extensive post about ADU development costs here. These updates are based new cost numbers that just came in from the upcoming 2019 ADU Tour in Portland, which serves as a repository of current and active primary source data for my ADU cost estimates.
It turns out that current primary source data is critical when it comes to talking about the costs of ADUs, because the development cost numbers here keep escalating rapidly.
The average costs have escalated by $20K for detached new construction ADUs in the last 2 years.
I actually feel bad every time I do a refreshed cost analysis, as the numbers are so shocking. But, it is what it is. The numbers do not lie.
While these averages are derived from a relatively small sample size, what these data points lack in volume, are made up for in quality and transparency. These numbers are not only fairly accurate, the ADUs and some of their actual detailed budgets will be available for all attendees to see on the upcoming ADU Tour. These costs here include all development costs, from design, permitting to construction, and notably the total costs also include sweat equity.
Here’s a couple key cost charts:
For additional analysis on how to interpret and understand these overall costs based on first-hand experience with these ADUs, check out the full post.