Your payment structure is your risk management
Paying a renovation in full upfront leaves you with very little leverage if the contractor stalls or disappears. Splitting payment across the deposit, progress payments, and final balance, tied to actual work completed, keeps your financial exposure roughly matched to the progress made at any point.
Be wary of "pay cash for a discount"
A contractor who offers a discount for paying in cash is often trying to avoid issuing an invoice, which can leave you without proof of payment if a dispute comes up later. A meaningful discount usually isn't worth giving up that paper trail -- ask for an invoice regardless of how you pay.
Frequently Asked Questions
Is it safer to pay progress payments all at once or split them up?
Splitting them across construction milestones, such as demolition/framing and then finishing, is much safer. Paying one large sum at once means a bigger loss if the project is interrupted partway through.
What happens if I pay the full amount upfront and the project stalls?
You'd have very limited leverage to recover your money or force completion. This is exactly why milestone-based payment exists -- it keeps your financial exposure roughly matched to the work that's actually been finished.