One bid is much lower
Check exclusions and drawing revisions before deciding.
Snohomish and King counties / ADU and addition scope planning
Compare ADU and addition bids on the same scope
Use a clear scope and responsibility checklist before choosing a builder. ADU and addition project inquiries focus on Snohomish and King counties.
Make the first decisions
A useful starting point for your project
A low total can hide a smaller scope. Compare estimates only after identifying which drawings, assumptions, allowances, and responsibilities each one uses. This worksheet is a way to organize a decision, not a cost estimator.
Finish choices are incomplete
Compare what each allowance actually includes.
A completion date is essential
Identify dependencies and written schedule assumptions.
Define the work
Service scope
Adu and addition scope planning with related work assessed as part of the project.
ADU Construction
Attached or detached accessory dwelling projects, subject to parcel feasibility and project review.
Plan the scope →Home Additions
New living space with the existing-house connection and site work included in the scope discussion.
Plan the scope →Garage Construction
Garage and accessory-structure projects reviewed for intended use, access, and utilities.
Plan the scope →The homeowner’s field guide
The ADU and addition bid comparison worksheet
Record the drawing revision, project description, intended use, and finish selections sent to each bidder. Ask every estimator to identify assumptions. If one proposal uses a conceptual sketch and another uses reviewed plans, keep that difference visible. Do not treat those totals as prices for the same project.
Read the full guideThe place comes first
Location and project fit
Construction inquiries are limited initially to Snohomish and King counties. The Washington name describes the brand, not statewide field coverage. The planning guide can help organize questions elsewhere, but local rules and actual contractor availability must be verified separately.
Your next step
Let’s put the project into words.
Share the location, the work you have in mind, and the questions you still need to resolve. The team will review the scope and project fit.
(425) 380-0511NW STYLE HOMES 1 LLC
Washington registration NWSTYSH768DA
About the operator and this service website
Request your free estimate
Tell us about your project and the construction team will review the location and scope. Free, no obligation.