How To Write An Architecure Proposal . This sample was created using proposal pack architecture #4. The firm agrees to provide the services outlined in this proposal for the fee outlined above. Pin by ነፃ ነኝ on Writing a business proposal in 2020 Proposal letter from www.pinterest.com The cover page has some kind of power in attracting a reader’s interest. This sample is included in every proposal pack. One of the core elements of an architectural services proposal is the title.