Issue one written scope
Give each bidder the same photos, dimensions, user goals, desired products, permit expectations, and finish assumptions. Ask for alternates separately so the base totals remain comparable.
Verify the business and the method
Check the license category where required, insurance, permit responsibility, recent relevant projects, subcontractors, warranty, payment schedule, change-order process, and who will assess the user’s functional needs.
Score the finished outcome
Compare clear openings, slopes, landing dimensions, reach ranges, support locations, lighting, drainage, surface transitions, and commissioning. A proposal that names measurable outcomes is easier to manage than one promising only ‘accessible’ work.
Rules, programs, and conditions change. Confirm requirements with the official source, local building department, and qualified professionals.