Compare builders' quotes like for like before you choose

Help me compare quotes from builders (or other trades) so I can see which is really the best value.

The job: [e.g. single-storey kitchen extension, new bathroom, re-roof]
What I asked them to price: [e.g. architect's drawings rev B, or my own list of the work]
Things I'm buying or arranging myself: [e.g. kitchen units, my own electrician]
When I need it done: [e.g. start in spring, finished before August]
What matters most to me: [e.g. a fixed price, a tidy site, finishing on time]

Quote 1, [builder's name]: [paste the quote exactly as written, including payment terms]
Quote 2, [builder's name]: [paste]
Quote 3, [builder's name]: [paste, or delete this line]

What I know about each builder: [e.g. recommended by a neighbour, slow to reply, wants half up front]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers. Ask follow-ups if a VAT or scope point is still unclear.

Then:
1. Make a side-by-side table of the work, trade by trade or room by room, marking each item for each builder as included, excluded, allowance (provisional sum) or not mentioned.
2. List what each quote leaves out or keeps vague, with a blank next to each gap for me to put a cost against, so I can compare true totals, not headline prices.
3. Compare payment terms, deposit, start date, how long the job will take, and who deals with waste, skips, scaffolding and building control.
4. Flag anything worth a second look, such as a big deposit up front, no written scope, or a quote that's mostly allowances.
5. Write a short, polite list of questions for each builder that would make the quotes comparable.
6. Finish with which quote looks strongest on what I've given you, and what would change your mind.

Don't invent prices or rules. Where something depends on regulations or VAT, say what I should check and with whom. This is help comparing, not professional advice. UK English.

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