A project falls into the heavy refurbishment category when the work involves structural changes, planning permission, or a major change to the property’s layout or use. Your project usually falls into this category if it meets one or more of these conditions.

• Structural changes. Removing load-bearing walls, adding steel support beams, underpinning foundations, or raising roof heights.
• Formal planning needed. The project needs full planning permission, listed building consent, or building regulations approval.
• Large budget. Renovation costs are usually more than 15% to 20% of the property’s value.
• Uninhabitable property. The building is missing a kitchen or bathroom, has serious structural defects, or needs full utility reconnection.

If your project is smaller than this, it may qualify as light refurbishment instead, which comes with faster, simpler funding. Speak to us early so we can confirm the right category for your project.

Common heavy refurbishment projects include:

• Side, rear, or loft extensions
• Converting a house into flats or an HMO
• Basement digs and structural underpinning
• Full renovations of derelict or uninhabitable properties
• Change of use projects, for example commercial to residential
• Listed building restorations

If your project matches any of these, you will more than likely need a heavy refurbishment loan rather than a standard light refurbishment facility.

Unlike light refurbishment, heavy refurbishment loans are released in stages. This protects both you and the lender from construction and budget risk.

1. Initial purchase release. The lender provides an initial drawdown, usually up to 75% loan to value, to cover the property purchase on completion day.
2. Staged works funding. The agreed refurbishment budget is held in reserve. As your building team completes key milestones, an independent monitor visits the site. Once the work is approved, the lender releases the next tranche of capital.
3. Interest savings. You only pay interest on the refurbishment funds once they are drawn down. This keeps your borrowing costs low during the early stages of the build.

Heavy refurbishment loans rely on two valuation figures, both provided by a RICS qualified surveyor.

• Current market value. This is the realistic value of the property in its current state, before any work begins.
• Gross Development Value, known as GDV. This is the estimated open market value of the property once all the planned work is finished.

Lenders check your schedule of works, your builder’s contract, and your planning documents before issuing loan terms. They do this to make sure the projected GDV is realistic and achievable.

Heavy refurbishment deals need careful legal preparation. Your solicitor needs to check planning consents, building regulations, and contractor agreements.

A solicitor experienced in development finance can handle title checks, planning conditions, and lender drawdown requirements quickly. This matters because delays at this stage can hold up stage payments to your contractors, which can stall the whole build.

• Generous loan limits. Up to 75% loan to value on the purchase price, and up to 100% of build costs funded in staged tranches.
• Flexible drawdowns. Capital releases are aligned directly with your builder’s schedule.
• Rolled up interest. Add your monthly interest charges to the loan balance to protect your working cash flow.
• Clear exit routes. Switch onto a standard long-term commercial, residential, or Buy to Let mortgage, or sell the finished property.

Most heavy refurbishment loans use one of two interest structures.

• Rolled up interest. Interest builds up and is added to your loan balance. You pay it off, along with the capital, at the end of the loan term. This protects your cash flow during the build.
• Serviced interest. You pay the interest each month from your own income or rental income. This keeps your final loan balance lower, but you need to budget for the monthly cost throughout construction.

Because heavy refurbishment projects can take several months, most borrowers choose rolled up interest. This frees up cash to pay contractors and cover unexpected costs.

Heavy refurbishment loans take longer to arrange than light refurbishment loans, because lenders need to review your planning documents, schedule of works, and builder contracts.

Even so, specialist lenders move much faster than high street banks. An Agreement in Principle can often be issued within a few days. Full loan offers typically follow within one to two weeks, once your valuation and legal checks are complete.

1. Share your property details, planning documents, and schedule of works with us. We assess your scenario and issue an Agreement in Principle.
2. We instruct a RICS qualified surveyor to confirm the current market value and the projected GDV.
3. Your solicitor and the lender’s solicitor carry out legal checks, including planning consents and title.
4. The lender releases the initial purchase funds so you can complete.
5. Your builder starts work. As each milestone is finished, an independent monitor inspects the site and confirms the work is complete.
6. The lender releases the next tranche of funds. This continues until the project is finished.
7. Once the work is done, you repay the loan through your exit strategy, either refinancing or selling.

Every heavy refurbishment loan needs a clear exit strategy before the lender will approve it.

Refinancing. Once the work is finished, you switch the property onto a standard long-term mortgage, whether that is residential, Buy to Let, or commercial. The new mortgage repays the bridging loan.

Selling. You sell the finished property on the open market. The sale proceeds repay the loan, and you keep any profit.

We check your exit strategy carefully before your loan is approved. This is especially important with heavy refurbishment, because the GDV needs to hold up once the work is complete.

• Monthly interest rate. Charged monthly rather than yearly. Rates depend on the property, the scope of works, and the loan to value.
• Arrangement fee. Usually 1% to 2% of the loan amount, often added to the loan rather than paid upfront.
• Valuation fees. You pay for both the initial valuation and the RICS GDV assessment.
• Monitoring surveyor fees. Paid each time an independent monitor inspects the site to approve a stage payment.
• Legal fees. You cover your own solicitor’s costs and the lender’s legal costs.
• Broker fee. We manage your application and coordinate the lender, the surveyor, and your solicitor throughout the build.

We give you a full cost breakdown before you commit, so you know exactly what to expect.

Heavy refurbishment carries more risk than light refurbishment, because the scope of work is bigger and the timeline is longer. You should understand these risks before you go ahead.

• Your property is used as security. If you cannot repay the loan, the lender can repossess and sell the property.
• Construction can overrun. Structural work often uncovers unexpected problems. This can increase costs and delay your project.
• Planning permission can be refused or delayed. This can push your timeline back significantly, and your loan term may need to be extended.
• The GDV may not be achieved. If the market moves against you, or the finished property is worth less than expected, this can affect your ability to refinance or sell.
• Interest rates are higher than standard mortgages. Bridging finance is short term and flexible, and this comes at a higher monthly cost than a typical mortgage.

We talk through these risks honestly before recommending any loan. If heavy refurbishment finance is not right for your project, we will tell you.

It helps to understand how heavy refurbishment differs from light refurbishment.

Light refurbishment covers cosmetic work, such as new kitchens, bathrooms, and decorating. No planning permission is needed, and funds are usually released in one lump sum.

Heavy refurbishment covers structural work, such as extensions, conversions, or a change of use. Planning permission is often required, and funds are released in stages as the work progresses.

If your project falls somewhere between the two, get in touch. We can help you work out which category applies and which loan structure fits best.

• Underestimating the budget. Structural work often costs more than expected. Always build in a contingency of 10% to 15%.
• Starting work before planning permission is confirmed. This can put your whole project at risk.
• Choosing a contractor without a track record. Lenders want to see an experienced main contractor managing the build.
• Ignoring the GDV. If your finished property will not be worth enough to support your exit strategy, the loan may not be viable. Check this early.
• Missing stage inspections. Delays in arranging the independent monitor’s visit can hold up your next drawdown and stall your build.

Can I get heavy refurbishment finance without property development experience? Yes. However, lenders will usually require you to hire an experienced main contractor with a solid track record to manage the build.

What happens if construction runs over budget? We recommend building a 10% to 15% contingency fund into your budget. Lenders want to see that you have cash reserves to cover unexpected building costs.

How are build funds released during the project? Refurbishment funds are released in staged payments after an independent surveyor inspects and approves each completed phase of work.

Do I need planning permission before I apply? Not always, but lenders will want to see your planning position clearly. If permission is still pending, tell us early so we can find a lender comfortable with that stage of your project.

What is a GDV, and why does it matter? GDV stands for Gross Development Value. It is the estimated value of your property once all the work is finished. Lenders use it to work out how much they can lend against your future exit.

At BridgeCross Finance, we work across the whole bridging and development finance market to find the right lender for your project. We do not simply offer the first deal we find.

We understand that heavy refurbishment projects are complex. We take the time to understand your build, your budget, and your exit strategy before recommending a loan.

Planning a heavy refurbishment project? Contact our team today to talk through your options.