Property Development

Development is assessed completely differently from buying to let or to live in, lenders and experienced developers alike work backwards from the finished value, not forwards from today's costs.

The development decision: six stages

Whether you're looking at a single conversion or a ground-up build, development decisions tend to follow the same broad sequence. The critical discipline — one that separates developers who stay solvent from those who don't — is starting from the finished value and working backwards, not from today's purchase price and working forwards.

• Acquisition: What can the land or building actually become, and at what finished value? Before a development purchase makes sense, you need an informed view of what the scheme will be worth when complete. Buying at auction is a common entry point into development stock; our Buying Property at Auction guide covers the legal pack, guide-price dynamics, and the accelerated completion windows involved.
• Planning: Can you build or convert what you intend? Permitted development rights and full planning permission are genuinely separate things. Our Planning Permission for Investors guide covers Class MA's 2024 reform and the Article 4 check that catches more investors than any other single planning issue.
• Costs: Build costs, professional fees, finance costs, and contingency. Development finance is significantly more expensive than buy-to-let borrowing, and underestimating total costs is the most common reason development schemes run out of money before completion. These guides cover the framework — specific cost estimates vary too much by location, specification, and build type to be responsible to generalise.
• Funding: Development finance and bridging loans both need to be arranged before you commit to a purchase. Lenders assess exit strategy alongside loan size. Our Bridging Finance guide explains the difference between serviced, rolled-up, and retained interest, and why exit strategy matters more than rate when the numbers are close.
• Delivery: The professional team — architect, quantity surveyor, project manager, contractor — affects not just the quality of the finished scheme but your lender's willingness to release drawdown funds in tranches as the build progresses. Lenders assess team credibility alongside scheme viability.
• Exit: Sale or refinance to a long-term mortgage. Our Exit Strategies guide explains the specific loan-to-value thresholds and valuation timing requirements that cause refinance exits to fail at the final stage.

Frequently asked questions