The Property Auction: Before You Bid - Cost Estimation Spreadsheet

The Ultimate Property Refurbishment Cost Estimator

(Automated Spreadsheet)

Stop guessing your renovation costs. Start calculating with engineering precision.

One of the most dangerous mistakes an investor or first-time buyer can make is underestimating the cost of structural repairs. This automated Excel tool, designed by a Senior Structural Engineer, removes the guesswork by providing a rigorous, line-by-line framework for costing any UK residential project.

What’s Inside:

• Automated Works Schedule: A comprehensive list of over 40 critical repair and renovation items—from piled underpinning and wall-tie replacement to full rewires and mid-spec kitchen installs.

• Pre-Loaded Industry Rates: Includes "Low" and "High" UK price ranges for every item, giving you a defensible starting point for your budget.

• Structural Focus: Specialized sections for high-stakes repairs, including subsidence investigations, chimney rebuilds, and lateral restraint work.

• Automatic Summaries: Simply enter your quantities into the color-coded cells, and the "Summary" tab automatically totals your costs by category.

• Ceiling Bid Calculator: Compare your total project cost—including fees and a 20% "auction contingency"—against your guide price to find your absolute walk-away number.

Six Categories of Costing:

1. Structural & Envelope: Roofs, chimneys, and foundations.
2. Damp, Timber & Remedial: DPC, woodworm, and dry rot.
3. Services: Electrical, plumbing, and heating.
4. Finishes & Cosmetic: Plastering, kitchens, bathrooms, and flooring.
5. Statutory & Professional: Engineer fees, surveys, and planning costs.
6. External Works: Landscaping, fencing, and drainage.