Typical Lot Size
5,000 – 9,000
sq ft
Max ADUs
2
per lot
Permit Type
Type I (administrative)
Timeline
4 – 6 weeks
Median Home Price
$450,000 – $625,000
Est. ADU Rent
$1,300 – $1,700/mo
Neighborhood Overview
The Meridian neighborhood stretches along the Meridian Street corridor, offering good transit access, nearby commercial amenities, and a mix of older and newer homes. Its central north-south position and affordable price point make it a practical choice for ADU construction.
Meridian is a working, transit-connected neighborhood defined by its proximity to the Meridian Street commercial corridor — one of Bellingham's primary north-south arterials. The neighborhood mixes older homes on established lots with newer infill development. WTA bus routes run frequently along Meridian, and residents have walkable access to grocery stores, restaurants, and services.
ADU Construction Allowed
Meridian qualifies for ADU construction under Bellingham's updated ordinance (BMC 20.10.036) and Washington's HB 1337.
- Detached ADUs (DADUs) allowed
- Attached ADUs allowed (basement, addition, above-garage)
- Up to 2 ADUs per lot
- Parking exempt (near transit)
Transit routes: WTA Route 27 (Meridian), WTA Route 25 (North)
Why Build an ADU in Meridian
- Strong transit access along Meridian Street with frequent WTA bus service
- Walkable commercial amenities — grocery, dining, and services nearby
- Affordable entry point for ADU investment with solid rental demand
- Mix of lot sizes accommodates various ADU configurations
- Parking exemptions available due to transit proximity
Special Considerations
Traffic noise on Meridian-adjacent lots
Properties directly fronting Meridian Street experience higher traffic noise. ADUs placed in the rear yard, away from the arterial, provide quieter living for tenants and command better rents.
Mix of zoning designations
The Meridian corridor includes both Residential Single and Residential Multi zones. Multi-family zoning may offer additional flexibility for ADU size and configuration. Confirm your specific zoning before planning.
Older infrastructure on some blocks
Some established sections of the Meridian neighborhood have older sewer and water lines. Utility connection costs may be slightly higher ($1,000–$3,000 more) if upgrades are required at the connection point.
Commercial corridor growth
The Meridian corridor is seeing ongoing commercial development, which improves neighborhood amenities and supports rising property values and rental demand.
Learn more about ADU regulations: Review Bellingham ADU laws, understand the permitting process, or see the complete cost breakdown for Whatcom County.
Ready to get started? Our free feasibility study analyzes your specific parcel in 48 hours.
Frequently Asked Questions
Does living near Meridian Street help with ADU parking requirements?
Yes. Properties within half a mile of a WTA transit stop — which includes most of the Meridian neighborhood — qualify for the ADU parking exemption. This eliminates the cost of building a dedicated parking space ($5,000–$15,000) and frees up lot area for a larger ADU footprint.
Are Meridian neighborhood lots big enough for a detached ADU?
Most are. Meridian lots typically range from 5,000 to 9,000 sq ft. Lots in the 6,500+ sq ft range comfortably support detached ADUs of 500–700 sq ft after setbacks. Smaller lots may be better suited for attached ADUs or compact detached designs.
What are the rental prospects for an ADU in the Meridian neighborhood?
Meridian ADUs typically rent for $1,300–$1,700/mo. The neighborhood attracts tenants who value transit access and walkable commercial amenities. One-bedroom units near the Meridian corridor tend to rent quickly due to the combination of affordability and convenience.
