State scope assumptions where the buyer and evaluation team can find them, and make each one concrete. An assumption should identify what is expected, who is responsible, and how a different condition could affect scope, fee, schedule, or deliverables. For example, instead of saying “client will provide information,” specify which records or survey data are needed, when they are needed, and what happens if they are incomplete or delayed.
Common assumptions include the number of review cycles, site access, utility information, design criteria, client-furnished data, survey or testing by others, agency coordination, and when the design basis will be confirmed. Identify whether permits, public meetings, construction observation, or responses to additional agency comments are included. Distinguish included services from optional services, and describe the process for evaluating and authorizing changed conditions.
Read the solicitation carefully before adding qualifications. Some buyers prohibit exceptions, require assumptions in a particular form, or treat deviations as grounds for rejection. If the request is unclear, submit a question through the permitted channel by the stated deadline. Do not rely on an informal conversation as a contract change. If the buyer does not permit exceptions, follow the instructions and ask a qualified adviser how to price and manage the stated risk.
Check that the assumptions match the rest of the proposal. Staffing, schedule, deliverables, and fee should reflect the same scope. For instance, if the schedule assumes one consolidated client review, the fee and work plan should not quietly include multiple redesign cycles. Have a technical reviewer confirm that the assumptions still allow the firm to meet professional duties, and ask a contracts adviser to check conflicts with the draft agreement. A clearly stated assumption does not override contract terms or remove professional obligations.
Keep a short assumptions register during proposal preparation, assign an owner to each item, and resolve material inconsistencies before submission.
This is general education, not legal or engineering advice; contracts, licensed PE judgment, and local codes govern.
