41 C.F.R. § 101-26.506-4

Agency requests for interior planning and design service will be reviewed and if considered feasible, will be accepted. Upon acceptance of a request by GSA, a proposal will be furnished the requesting activity for review and approval within 30 days. The proposal will include the following:

(a) Approximate date the work can be started;

(b) Estimated completion date of planning and design services;

(c) The amount to be reimbursed GSA for the services; and

(d) Other pertinent data or recommendations.