Question 1

Can I build multiple ADUs on my lot in Birchwood?

Accepted Answer

Yes, under the 2025 regulations, certain lots in Birchwood (and other areas) are eligible for multiple ADUs, effectively allowing small multi-family developments on single-family lots. Our feasibility study determines your specific eligibility.

Question 2

What does $1,500 for land use permits cover exactly?

Accepted Answer

This fee covers the preparation, submission, and management of your land use permit application with Whatcom County. It includes the time of our permitting specialist, Loren, to navigate the county's requirements and respond to initial feedback.

Question 3

How does the GIS feasibility study work?

Accepted Answer

We use an automated pipeline that queries Whatcom County's GIS database. We analyze parcel boundaries, zoning overlays, critical areas (wetlands, slopes), utility locations, and setbacks to generate a comprehensive report on what you can build.

Question 4

What is a Letter of Intent and what am I committing to?

Accepted Answer

The Letter of Intent (LOI) is a formal agreement to proceed with the full build phase. It outlines the scope, estimated budget, and timeline. Signing it initiates the engagement of our architect and builder, Carlos, and requires a project deposit.

Question 5

How long does the full permitting process take in Whatcom County?

Accepted Answer

Timelines vary, but generally, land use approval takes 2-4 months, and building permits take another 2-4 months. Our dedicated specialist helps minimize delays by ensuring accurate initial submissions.

Question 6

What's the minimum lot size for an ADU in Bellingham?

Accepted Answer

There is no strict minimum lot size for ADUs in many zones now, thanks to HB 1337. However, you must meet setback, lot coverage, and impervious surface requirements, which practically limits feasibility on very small lots.

Question 7

Can I build an ADU on a lot with an existing rental unit?

Accepted Answer

Yes, owner occupancy requirements have been eliminated statewide. You can have a main house and an ADU both as rentals.

Question 8

Does my ADU need its own utility connections?

Accepted Answer

It depends on the specific utility provider and the type of ADU (Attached vs Detached). Often, DADUs require separate sewer/water connections or significant upgrades, which we assess during feasibility.

Question 9

What's the difference between an ADU and a DADU in Whatcom County?

Accepted Answer

ADU usually refers to an Attached Dwelling Unit (basement conversion, addition). DADU refers to a Detached Accessory Dwelling Unit (backyard cottage, separate structure). DADUs often have more flexible size limits but higher infrastructure costs.

Question 10

Will building an ADU increase my property taxes?

Accepted Answer

Yes, adding an ADU increases the assessed value of your property, which will increase your property taxes. However, it does not trigger a reassessment of the existing main home's value in most cases.

Question 11

Can I use my ADU as a short-term rental (Airbnb) in Bellingham?

Accepted Answer

Bellingham has specific rules for short-term rentals. While allowed in some zones, there are caps and permit requirements. Long-term rentals are generally easier to permit.

Question 12

What happens if my lot is in a critical area or floodplain?

Accepted Answer

Critical areas make building harder but not always impossible. We may need additional studies (wetland delineation, geotech). Our initial GIS study identifies these red flags early.

Frequently Asked Questions

Frequently Asked Questions

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