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SapphireProperty Investments & Ventures

Renovation & Refurbishment

How to Budget a Property Refurbishment Without Nasty Surprises

8 min read · Editorial draft · awaiting source-backed owner review

Refurbishment budgets rarely go wrong because of one big mistake — they drift through unclear scope, late decisions and hidden conditions. Here is a structured way to build a budget you can rely on.

1. Understand the building first

Before pricing anything, get a survey and, for older properties, consider opening up areas of concern. Damp, timber decay, outdated wiring and structural issues are far cheaper to price before work starts than to discover halfway through.

2. Define the scope room by room

Write a schedule of works that describes exactly what will be done in each space. Vague items such as 'refurbish kitchen' invite wildly different quotes.

3. Fix the specification

Decide finishes, fittings and appliances up front. Late changes are the most common cause of overspend and delay.

4. Get comparable quotes

Ask several contractors to price the same schedule of works. Check what's included — waste removal, making good, decorating, certification.

5. Budget for everything else

  • Professional fees: designer, structural engineer, party wall surveyor where needed
  • Planning and building control fees
  • VAT where applicable
  • Holding costs during works: finance, insurance, council tax and utilities
  • A contingency — larger for older or unknown buildings

6. Design for the end user

For rentals, choose durable, easily replaced finishes and layouts that suit the target tenant. Over-specifying can erode returns; under-specifying can increase voids and maintenance.

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