Typical Lot Size
5,000 – 8,000
sq ft
Max ADUs
2
per lot
Permit Type
Type I (administrative)
Timeline
4 – 6 weeks
Median Home Price
$525,000 – $650,000
Est. ADU Rent
$1,400 – $1,800/mo
Neighborhood Overview
Cordata is Bellingham's newest planned neighborhood, designed with transit access and urban density in mind. Newer infrastructure, proximity to Bellis Fair and the Guide Meridian corridor, and strong transit connections make it an attractive — but nuanced — option for ADU construction.
Cordata represents Bellingham's north-side growth frontier. Developed primarily in the 2000s and 2010s, the neighborhood features newer homes, planned street grids, and pedestrian-oriented design. Its proximity to WTA's Cordata transit station and the Guide Meridian commercial corridor provides strong transit access. However, newer developments may carry CC&Rs or plat restrictions that affect ADU eligibility, making due diligence especially important.
Cordata lots tend to be compact by newer development standards (5,000–8,000 sq ft). Some planned developments have even smaller lots (4,000–5,500 sq ft) with shared open space in lieu of large private yards.
ADU Construction Allowed
Cordata 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 Cordata Station, WTA Route 27 (Meridian), WTA Route 72X (Bellingham–Lynden)
Why Build an ADU in Cordata
- Transit advantage — Cordata Station and multiple WTA routes provide parking exemptions
- Newer infrastructure means fewer surprises with utilities and sewer connections
- Planned growth area with city investment in roads, parks, and transit
- Parking exemptions near transit reduce ADU construction costs
- Good utility access — newer sewer and water mains reduce connection costs
Special Considerations
CC&Rs and plat restrictions
Many Cordata subdivisions were platted with covenants that may limit ADU construction. Under HB 1337, HOAs cannot outright ban ADUs, but they can impose design standards (materials, colors, height). Always review your CC&Rs before starting a project.
Smaller lots in newer developments
Some Cordata plats have lots as small as 4,000 sq ft, which limits detached ADU feasibility. On these lots, attached ADUs (basement or addition) may be the only practical option.
Plat-specific setback requirements
Newer subdivisions may have platted setbacks that exceed standard zoning setbacks. These plat-specific requirements take precedence and can reduce buildable area beyond what zoning alone would suggest.
Newer homes may not qualify for basement size exemption
The 5-year rule for basement ADU size exemptions (BMC 20.10.036(B)(6)) means homes built after 2021 do not yet qualify. This will change as the neighborhood ages.
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 Cordata Station help my ADU project?
Yes. Properties within half a mile of a transit stop — which includes much of Cordata near the Cordata Station and Meridian corridor — are exempt from ADU parking requirements. This eliminates the cost of building a dedicated parking space ($5,000–$15,000) and frees up lot area for a larger ADU footprint.
Can my HOA prevent me from building an ADU in Cordata?
Under Washington's HB 1337, HOAs and CC&Rs cannot fully prohibit ADU construction on residential lots. However, they can impose reasonable design standards such as exterior materials, colors, and height limits. Review your specific CC&Rs and consult with our team — we've navigated HOA restrictions on multiple Cordata projects.
Is it harder to add an ADU to a newer Cordata home?
Not necessarily harder, but different. Newer homes benefit from modern utilities and foundations but may face plat-specific setback restrictions that older neighborhoods don't have. Also, homes built after 2021 don't yet qualify for the basement ADU size exemption (which requires 5 years of occupancy). A detached backyard ADU is often the best option for newer Cordata homes.
What are the parking rules for Cordata ADUs?
Most of Cordata qualifies for the transit parking exemption (within half a mile of a transit stop). This means no dedicated parking space is required for your ADU. Even if your property falls outside the exemption zone, a single driveway space typically satisfies the requirement. Our feasibility study confirms your property's parking status.
