Collected research about accessory dwelling units (AKA granny flats, laneway houses, in-law units, etc) suggests they have many potential benefits, and two common arguments “against” are unsupported.
ADUs are especially promising as environmentally sensitive and affordable housing, and this potential should be investigated in detail.
Will building an ADU raise your property taxes? Very likely yes. Is that a good thing for the community?
Older persons are expected to benefit from ADUs. Is this happening now, and will it happen more in the future?
The single biggest and most specific fear mentioned by ADU opponents is loss of street parking. Is there any evidence on this?
Opponents of ADUs frequently charge they will bring down property values for the whole neighborhood. What is the evidence?
Some survey results about ADU costs… and some thoughts about why ADU developers aren’t usually real estate “pros.”
It may seem odd to ask whether a housing form actually provides housing, but it’s a key premise in civic debates about accessory dwelling units.
ADUs are a really unusual form of development. This post goes over their special qualities, and explains why a lot of “debate” about ADUs is so repetitive.
Which hopes and fears about ADUs are most likely to be true? Explore claims and controversies with new evidence, in this 13-part series, beginning today.
Imagine, in the abstract, the absentee landlord. I personally see him as a sort of Dickensian villain, say Sir Mulberry Hawk, coarse in intention despite his fine clothing and mustache, … Continue reading
In the past year or two, major builders have accomplished an interesting slight of hand. They have recognized the need for houses with ADUs, and started selling them for tidy … Continue reading
Today the Appraisal Journal publishes a research paper about residential properties with accessory dwelling units (ADUs). The paper describes an income-based method for appraising properties with ADUs, and concludes that … Continue reading
On Friday, October 26th, we held an incredible event at Portland State University. It was the first summit of its kind, focusing on space efficient housing. The Build Small | … Continue reading
The City of Portland’s Build It Green! Home Tour and Info Fair (BIG!) turns eleven this year. BIG! is a self-guided tour of 16 green remodels and new homes around … Continue reading
A quick note about language here. One reason people get so confused, and perhaps heated, about accessory dwellings is that language about them is confused. The different names conjure up … Continue reading
I spent a lot of 2011 learning about Accessory Dwelling Units (also known as in-law units, granny flats, backyard cottages, etc). Beat that in terms of geekiness! (Okay, I bow … Continue reading
A book review of Alley Life in Washington Alley Life in Washington is one of my favorite books. Not just because of the story it tells about the history of … Continue reading
A few years ago I had the opportunity for my mother-in-law to move in with my family in our NE Portland home. We didn’t have space in our home for … Continue reading
(Update January 2013: please note that the research on which the following piece was based has now been published in Appraisal Journal. Please read the full text of that article … Continue reading