New ADU and middle housing development quick guides

New resources make it easier for those considering developing ADUs or middle housing.

September 15, 2026 - by Ryan Key-Wynne, Planning and Community Development Communications Manager

We have some new resources that make it easier for those considering developing Accessory Dwelling Units (ADUs) or middle housing (such as duplexes and townhomes) to decide if building is right for them. They also make it much easier to understand development rules.

Some of the information you’ll be able quickly find:

  • Where in Bellingham these housing forms can be built
  • Density, size and height restrictions
  • Setbacks requirements (with diagrams)
  • What you can expect from the permit process

That’s just a small sample – there’s a lot of other helpful information to explore:


Media Contact

Ryan Key-Wynne, Planning and Community Development Communications Manager, rwkeywynne@cob.org 


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