Renovation Budget With Contingency, Phasing and Cash Flow

Build a renovation budget with contingency, phasing and cash flow that shows when money is needed, not only the total.

Added October 15, 2026. Written with AI assistance and checked for clarity and placeholders; not reviewed by a lawyer, accountant, clinician or other professional. How these prompts are made

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Build a renovation budget for [PROJECT]. Scope and rooms: [SCOPE]. Quotes or estimates so far: [QUOTES]. Funds available and timing: [FUNDS_AND_TIMING]. Items that can wait: [DEFERRABLE_ITEMS]. Items I must do first: [PRIORITY_ITEMS].

Produce a table by trade or category (demolition, structure, electrical, plumbing, finishes, fixtures, appliances, design fees, permits, disposal, contingency) with low, expected and high costs, and the basis. Add a contingency of 15 to 20 percent for older homes and explain the reason, showing the arithmetic. Create a phased plan with a cash-flow table by month (deposits, stage payments, final payment) and a retention amount until snags are fixed [VERIFY terms in the contract]. Provide a variation log template, a decision rule for when costs exceed budget (cut, defer, finance, or substitute), and a list of questions to ask when comparing quotes.

This is planning help, not financial advice. Do not state prices as facts.

Include a worked cash-flow example with invented figures: total 24,000, deposit 20 percent (4,800), stage payments of 6,000 on first fix and 7,200 on completion of finishes, and a 6 percent retention (1,440) held for 30 days after handover, then show the monthly balance and what to do if funds arrive late. Mark all payment terms for confirmation against the contract.

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Total contract 24,000: deposit 20 percent 4,800 (month 1); first fix 6,000 (month 2); finishes 7,200 (month 3); retention 6 percent 1,440 held for 30 days after handover (month 5).
Cash flow: month 1 -4,800; month 2 -6,000; month 3 -7,200; month 4 0; month 5 -1,440 (check the contract [VERIFY]). Add 15 percent contingency: 3,600 held in reserve.
If funds arrive late by a month, move the finishes start or ask the contractor for a revised schedule in writing.

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