What should a good deck or pergola proposal include?
Short answer
A good proposal describes exactly what will be built and how. It should name the dimensions and layout, the species and grade of every visible material, the framing lumber and hardware grade, footing size and depth, how the ledger is attached and flashed, the railing and stair design, the finish, what permits and drawings are included, a schedule with inspection points, how surprises are handled, cleanup and protection, and a payment schedule tied to milestones. If a line is vague, ask for it to be made specific.
A proposal is a description, not a price
The number at the bottom is the least useful part of a proposal because it cannot be judged without the rest. Two proposals that differ by a wide margin may be describing very different structures. A good proposal lets you see the deck in your mind and would let a third party build it the same way. That is the test: could someone else build this from what is written?
It also protects both sides. A specific scope keeps a homeowner from paying for something that was never promised, and it keeps a builder from being asked to add things that were never priced. The clearer the document, the fewer awkward conversations happen halfway through the job.
Scope and dimensions
Expect a drawing or at least a dimensioned sketch showing the footprint, where it attaches to the house, heights off grade, stair locations and the pergola outline. Expect the square footage, the number of posts and footings, and a note on how the design handles slope or drainage if those apply. Small things like the direction decking runs and whether there is a picture-frame border belong here, because they affect labor and material.
Materials, down to the hardware
- Framing: species, treatment rating and sizes for posts, beams and joists.
- Decking: product or species, grade, board width and thickness, fastening method.
- Pergola: beam and rafter sizes, species, end profile, spacing.
- Railing: system or species, height, baluster or cable spacing, post caps.
- Hardware: joist hangers, post bases, ledger fasteners and screws, with the coating or stainless grade named.
- Flashing and membrane: ledger flashing material, joist tape, beam caps.
- Finish: product, color, number of coats, and what is finished before assembly.
- Concrete: footing size and depth, and whether footings are poured or precast.
Process, permits and schedule
The proposal should say whether a permit is required, who prepares drawings, who submits, and whether fees are included or passed through. It should show a realistic sequence with the pauses for concrete cure and inspections, and an expected duration on site. It should also state what happens if demolition uncovers damage: how you will be told, how a change is priced and approved, and that work on the affected area stops until you agree.
Site care and cleanup
Where materials stage, how plants and hardscape are protected, how debris is removed and whether the site is left broom clean each day are not minor details; they are what living through a project feels like. Ask for them in writing. Note also hours of work and how your neighbors will be considered.
Payment and paperwork
Payment should be staged against milestones you can see, such as footings complete, framing complete, decking and railing complete, final. California law limits the down payment on home improvement contracts with licensed contractors to the lesser of ten percent or one thousand dollars, and that is a sensible standard to expect from anyone. The proposal should name the business, the person responsible, insurance carried and, where applicable, a license number you can verify. Finally, it should have an expiration date, since lumber prices move.
Related questions
Is a one-page estimate enough for a small pergola?
For a simple freestanding pergola, one well-written page can cover it if it names the sizes, species, hardware, footings, finish and schedule. Length is not the point. Specificity is. A long proposal full of boilerplate can say less than a short one that names the screws.
What if the proposal says materials are 'or equal'?
That phrase gives the builder room to substitute. It is reasonable for commodity items like framing lumber. For the decking, railing and finish you chose, ask for the specific product to be named and any substitution to require your approval.
Should the proposal include drawings?
For anything attached to the house, raised, or going through permit review, yes. A plan and a section showing footings, ledger and railing details is the clearest way to agree on what is being built and is what the city will want to see anyway.
Sources and further reading
- Contractors State License Board (www.cslb.ca.gov)