ENGINEERING DESIGN PROPOSAL
PREPARED FOR
Acme Co
PREPARED BY
Northwind Studio
DATE
August 18, 2026
ENGINEERING DESIGN PROPOSAL
A proposal from Northwind Studio outlining engineering design and drafting services through stamped, permit-ready drawings.
PREPARED FOR
Acme Co
PREPARED BY
Northwind Studio
DATE
August 18, 2026
Northwind Studio
ENGINEERING DESIGN PROPOSAL
This proposal outlines the engineering design services Northwind Studio will provide for Acme Co. It covers the work from concept design through design development to a final, stamped drawing set ready for permit and construction.
DRAWINGS
20 sheets
Plans, sections, and details across disciplines.
PHASES
3 stages
Concept, development, and final stamped set.
DELIVERY
8 weeks
Concept to stamped drawings on a fixed schedule.
Northwind Studio
ENGINEERING DESIGN PROPOSAL
The design runs across three phases. Each closes with a drawing package and a review meeting before the next begins.
PHASE 1 · CONCEPT DESIGN
Site analysis, review of existing conditions and program requirements, preliminary calculations, and a concept drawing set that establishes layout, key dimensions, and design intent.
PHASE 2 · DESIGN DEVELOPMENT
Detailed engineering calculations, coordination with related trades and consultants, developed plans and sections, and a design development package ready for internal review.
PHASE 3 · FINAL DRAWINGS AND STAMPS
Final coordinated drawing set, specifications, and details, signed and sealed by a licensed professional engineer and delivered in a format suitable for permit submission.
Not included: permit application fees, construction observation and site inspections (available as a separate scope), specialty consultants such as geotechnical or environmental, and existing conditions surveys. New scope can be added in writing at any time.
Northwind Studio
ENGINEERING DESIGN PROPOSAL
The engagement is a fixed fee split across the three design phases. Line items below map to the phases in the scope of work.
| Item | Rate | Qty | Amount |
|---|---|---|---|
| Concept design | $6,500 | 1 | $6,500 |
| Design development | $9,500 | 1 | $9,500 |
| Final drawings and PE stamps | $7,500 | 1 | $7,500 |
| Total | $23,500 | ||
| Milestone | Share | Amount |
|---|---|---|
| On signature (concept design) | 30% | $7,050 |
| Design development complete | 40% | $9,400 |
| Final stamped drawings delivered | 30% | $7,050 |
Invoices are due within 15 days. Total delivery from kickoff to stamped drawings is 8 to 10 weeks, subject to the kickoff month you provide on the acceptance page.
Northwind Studio
ENGINEERING DESIGN PROPOSAL
To proceed, complete the fields below and sign. This proposal is valid for 30 days from the date on the cover.
PURCHASE ORDER NUMBER
SITE ADDRESS
PREFERRED KICKOFF MONTH
CLIENT
Acme Co
PROVIDER
Northwind Studio
The Engineering Design Proposal template is a five-page document for putting your engagement on paper before it starts. It carries an overview with stat cards, objectives, a three-phase scope of work, an investment table with a computed total, and an acceptance page with inputs and signatures.
It is intentionally simple: rename what needs renaming in Bonsai, list your actual deliverables, and set the price. Merge fields handle the client details and date, and the last page collects a PO number, start date, and both signatures.
Everything below comes pre-configured. Turn sections on or off, edit the copy, or add your own — Bonsai remembers your choices for next time.
Can I edit every section? Yes — every heading, paragraph, stat, table row, and signature block is fully editable in Bonsai.
Can I add more pages? Yes — add, reorder, or duplicate pages once the template is open.
Do merge fields auto-fill? Yes — Sender, Receiver, and Date pull from your client contact and the current date automatically.