Heavy Refurbishment Development Finance
Heavy refurbishment finance funds projects that standard bridging lenders and high street banks will not: structural alteration, full internal reconfiguration, change of use, and major works that materially change the use and value profile of an asset rather than simply improve it. Property developers and investors working on projects of this scale need a facility that is underwritten to match the scope of the works, not shoehorned into a product designed for something simpler.
We work with small to medium-sized developers and property investors on heavy refurbishment loans and refurbishment and conversion finance across residential and commercial assets throughout the UK.
Heavy Refurbishment Finance: At a Glance
Loans from £150,000 to £10m+
Up to 70–75% loan to cost (LTC) and up to 65% of gross development value (GDV)
Structural works, conversions, change of use, and full reconfiguration considered
Staged drawdowns aligned to your build programme
Access to specialist and private lenders not available on the open market
Is Refurbishment Development Finance Right for Your Project?
Heavy refurbishment development finance is suited to projects where the works go beyond cosmetic improvement. If the scope involves structural alteration, significant internal reconfiguration, extension, change of use, or conversion of an asset from one use class to another, this is the relevant product. Where planning uplift or change of use is required, these projects could also be funded through this type of facility.
Loan sizes for heavy refurbishment finance typically start from around £150,000. These facilities might suit a range of borrowers from property investors undertaking their first major conversion through to experienced developers managing multiple projects at once. Prior experience in delivering projects of a similar scale and complexity will be a primary consideration for most lenders. First-time developers can still access this market, but lenders will look closely at the experience and track record of the surrounding team. An experienced contractor, a quantity surveyor or project manager, and a credible build programme all compensate meaningfully where the borrower's own CV is shorter.
The projects we most commonly work on include residential properties undergoing HMO conversion, period houses being subdivided into self-contained flats, commercial buildings converted to residential under permitted development or full planning, and mixed-use assets being repositioned for higher-value use. Unmortgageable property acquired below market value due to structural condition or uninhabitability is also common within this product, as are vacant properties with no current income. Assets of non-standard construction requiring specialist remediation feature regularly too.
If the works are primarily cosmetic (redecoration, new fixtures, kitchen and bathroom replacement within the existing layout) with no structural element, that falls into light refurbishment territory and a different facility is more appropriate. The distinction matters to lenders and affects both pricing and access.
How Heavy Refurbishment Finance Works
Heavy refurbishment development finance is drawn down in stages, unlike a standard bridging loan which is usually drawn as a single lump sum on day one. The initial advance will usually cover the acquisition of the property or development site (often referred to as land acquisition finance where a site is being purchased for redevelopment), and subsequent drawdown tranches are released as the build programme progresses, usually verified by a monitoring surveyor appointed by the lender.
Having a staged drawdown approach limits the lender's exposure at any point in the project, while ensuring borrowers are not servicing interest on capital that has not yet been deployed into the works. Monitoring surveyor fees form part of the overall project cost and should be factored into the appraisal from the outset. Most lenders will also require a contingency allowance within the cost schedule, typically 10–15% of build costs, reflecting the risk of unforeseen works in major refurbishment and change-of-use projects. Lenders may also ask for evidence of appropriate contractor all-risk insurance, building control sign-offs, warranties or professional certifications, particularly where these are relevant to the works and exit route.
Interest on heavy refurbishment loans is commonly rolled up and retained within the facility rather than paid monthly. Where interest is retained, lenders deduct the projected interest cost from the gross facility at drawdown, meaning the net loan received on day one is lower than the gross amount. This rolled-up interest accrues through the term and is repaid on exit.
Loan terms for these projects are usually 12 to 24 months, although can be longer for larger projects with longer programmes. A small commercial to residential conversion delivered under permitted development might complete within 12 months, however a more complex reconfiguration requiring full planning, structural works, or a phased fit-out or sectional completions may take longer. Lenders will always want to see a realistic programme that matches the project.
Exit from the facility at practical completion usually takes one of two forms: sale of the completed asset, or refinance onto a buy-to-let or commercial investment mortgage. The exit strategy is assessed at the point of lending, not as an afterthought. Where the exit is onto longer-term investment finance, the completed assets need to pass the refinancing lender's rental stress tests. A sale exit needs realistic comparable evidence in the market. Both refinancing and sale exits need to be credible and evidenced.
As may already be clear, despite these projects not being ground-up builds and only works to an existing structure, many lenders will classify larger or more scope-intensive refurbishments as development finance rather than bridging loans. This classification is important because where it applies, it changes the pool of available lenders, the monitoring requirements, and sometimes the rates offered.
What Lenders Focus on Most in This Space
Lenders also consider the exit refinance route carefully. Where a project exits onto buy-to-let or investment finance, the GDV needs to support the refinance at the agreed loan-to-value. Where the exit is via sale, comparable transaction evidence in the local market needs to substantiate the valuation.
Key Features and Lending Criteria
Loan to cost (LTC): Typically up to 70–75%, covering acquisition and a substantial proportion of build costs. The day-one advance may be lower, with further tranches drawn as works progress.
Loan to gross development value (LTGDV): Most lenders cap their total exposure at 60–65% of the completed value. This is the primary ceiling in the underwriting. Where interest is rolled up and retained, the impact on the LTGDV calculation needs to be modelled carefully in the appraisal: the gross loan figure including rolled-up interest must remain within the lender's maximum LTGDV at all times.
Rates: Heavy refurbishment loan rates are usually slightly more expensive than standard bridging loans, reflecting the additional complexity and programme risks of these projects. Rates indicatively range from 0.75% to 1.25% per month, but will vary depending on the lender, asset type, location, and borrower experience. Well-prepared applications with experienced teams and credible GDVs attract meaningfully better terms than those presented without proper supporting information.
Borrowing structure: Most facilities are available to individuals, partnerships, and limited companies. SPV borrowing is common, and many lenders actively prefer a limited company structure for development-grade refurbishments. This is worth considering at the planning stage rather than after heads of terms have been agreed.
Security: A first legal charge over the subject property. Some lenders will consider cross-charging additional assets where there is a shortfall against their LTV requirements.
Term: 12 to 24 months is standard. Extensions are available from some lenders but are not automatic and may not be at the original rate.
Speed: Facilities can complete in as little as 3–4 weeks for experienced borrowers with clean title and a clear planning position. More complex cases involving multiple titles, vacant commercial assets, or non-standard construction typically take 6–8 weeks.
Costs: Lender arrangement fees are typically 1–2% of the loan amount. Exit fees apply with some lenders on higher-leverage products. Monitoring surveyor fees, valuation fees, and legal costs are additional project costs that vary by case.
Where Heavy Refurbishment and Conversion Finance Is Typically Used
Large residential property converted to self-contained flats
Single dwellings, particularly larger Victorian and Edwardian houses, are a natural candidate for flat conversion. Works typically include structural subdivision, separate utility supplies, fire compartmentation, and compliance upgrades. The value uplift from creating multiple saleable or lettable units can be significant, and the project can be funded on the existing use value with the GDV underpinning the overall facility. Where units are released to the market individually, a stabilisation period post-practical completion may be required before the exit refinance can be drawn down. This is one of the most common applications for residential refurbishment finance and conversion finance in the UK market.
Commercial buildings converted to residential
Former offices, retail units, and light industrial premises are regularly converted to residential use. Change of use projects are done either under permitted development rights or with full planning consent, and involve residential fit-out works and often significant MEP (mechanical, electrical, and plumbing) changes. The asset typically generates no income in its current form, which makes standard investment lending impossible and positions heavy refurbishment development finance as the primary route. Where the converted units are sold individually, a phased sales programme or a developer exit bridge may be used to extend the runway beyond the original facility term if the market requires it.
Uninhabitable or structurally compromised property
Properties that are currently unmortgageable due to structural issues, subsidence, significant damp, or uninhabitable condition are regularly financed through heavy refurb finance, with the facility funding both the acquisition and the full remediation programme. Exit is typically onto a standard investment or owner-occupier mortgage once the works have received building control sign-off or independent certification. These major refurbishment projects often arrive via auction and require rapid facility deployment.
HMO conversion from standard residential
Converting a larger residential property to a licensed House in Multiple Occupation involves structural modification, additional bathroom provision, communal area upgrades, and compliance works under the relevant licensing regime. The yield uplift relative to a single let can be considerable. Exit is typically onto a specialist HMO buy-to-let product, and heavy refurbishment bridging finance bridges the gap between acquisition and that refinance.
Mixed-use asset repositioning
Mixed-use properties, particularly those with commercial space at ground level and residential units above, are often acquired with the intention of improving the layout, upgrading the residential accommodation, or repositioning the asset into a more valuable use. These projects can become structurally and legally complex quite quickly, especially where multiple titles, tenants, or planning considerations are involved, which makes lender experience in mixed-use refurbishment and conversion finance particularly important.
Grade II listed or period buildings divided into apartments
Heritage assets, including listed buildings and period properties in conservation areas, can present their own specific challenges around planning consents, permitted works, and materials specifications. Notwithstanding this, converting these building to apartments or other residential uses is still a well-established value-add strategy. It just requires lenders with the right appetite and experience in this field.
Why Use a Specialist Broker for Heavy Refurbishment Finance
The lender market for heavy refurbishment development finance is broad, but criteria vary significantly between providers. Some focus on residential conversions, others on commercial assets. Some restrict lending in certain regions, or have specific positions on HMOs, unmortgageable property, or non-standard construction. A lender who was competitive on a previous project may not even offer terms on the next.
We have direct relationships with specialist lenders across the market, including private credit funds that do not operate through packager networks or public-facing portals. That access matters on deals that fall outside the standard parameters of a high-volume lender.
The preparation and presentation of the case also makes a practical difference. A credible GDV, a coherent cost schedule, a monitoring surveyor's cost plan, and a clear exit strategy all reduce friction in credit. We help clients present their projects in a way that gives lenders the information they need to reach a decision efficiently and at the right price.
Beyond lender access, there are structuring questions on larger or more complex projects that materially affect project economics. The choice between heavy refurbishment bridging finance and full development finance, the treatment of rolled-up interest in the appraisal, whether to layer mezzanine alongside senior debt, and the implications of SPV or limited company borrowing for tax and lender appetite are all areas where early advice makes a difference.
Clients find our development finance calculator extremely helpful in modelling their development viability.
Our Process: From First Discussion to Completion
Initial conversation
Indicative terms
Application preparation
Lender submission and credit
Valuation and legal
Drawdown and ongoing monitoring
Heavy Refurbishment Development Finance FAQs
The distinction is in the nature of the works rather than their cost. Light refurbishment will cover cosmetic improvements without structural works, for example redecoration, new fixtures, kitchen and bathroom replacement within the existing layout. Heavy refurbishment, however, involves structural works, change of layout, extensions, or change of use. Lenders classify the two differently, apply different underwriting criteria, and price them separately. Most standard bridging lenders will not fund heavy refurbishment.
Not necessarily. Many heavy refurbishment loans are advanced where the works fall within permitted development rights. Where a planning consent is required and has already been granted, lenders will want to review it and any associated conditions. Applications where planning has not yet been secured are harder to fund, though some lenders will consider finance against the existing use while planning is being pursued.
Yes. SPV borrowing and limited company structures are accepted by most specialist lenders in this space, and are often preferred for development-scale refurbishment projects. The implications for stamp duty, tax treatment, and lender criteria are worth considering at the appraisal stage rather than once heads of terms are in place.
After the initial advance on day one, subsequent tranches are triggered by a site inspection from the lender's monitoring surveyor. The surveyor certifies the stage of completion against the agreed cost plan, and the lender releases the corresponding funds. Some facilities run to four or five tranches; others are simpler. The process is more involved than a standard bridge, but it functions predictably once underway.
Most lenders will prefer borrowers who have completed at least one prior project of a comparable scale. Some lenders will consider less-experienced borrowers for certain asset types, particularly where the developer has a strong build team, experienced contractor, and a QS or project manager involved to demonstrate that the project is being managed by people who have done this before.
Most lenders will consider loan extensions, however they are not automatic. Extensions will typically carry an extension fee and sometimes the lender will require a rate adjustment. A realistic works programme, with contingency time, at the original application stage reduces the likelihood of needing an extension, and early engagement with the lender is always preferable to a last-minute request.
They are related, but distinct from each other. Development finance is typically associated with ground-up construction or substantially new-build schemes. Heavy refurbishment development finance, however, works largely to the existing structure, retaining and reworking it rather than demolishing and rebuilding. The products share several features (staged drawdown, GDV-based underwriting, rolled-up interest) but are classified differently by lenders. On scope-intensive projects, a lender may apply development finance criteria regardless, which affects which providers will consider the deal and on what terms.
For well-prepared applications with clean title and planning in place, 3–4 weeks is achievable. The more common timeline for a first application with a new lender is 6–8 weeks. Speed depends on information availability and valuer access. Auction purchases with tight deadlines are achievable but require early engagement.
Review Your Heavy Refurb Project With Us
Heavy refurbishment development finance can cover a wide range of project types: major HMO conversions, commercial-to-residential conversions, single to multi-unit conversions, structural remediation, as well as redevelopment of existing assets into higher-value uses. The common thread is that the works represent a material change to the property, and the finance needs to reflect that scope.
According to data from the Bridging and Development Lenders Association, the UK bridging finance loan book reached £13.4 billion in Q4 2025, reflecting sustained demand from developers and investors working across conversion schemes and major refurbishment projects. Lender appetite has grown, but so has the variation in criteria, leverage, and pricing between providers.
We work on heavy refurbishment loans across residential and commercial assets, with access to specialist and private lenders who understand these projects in depth. If you have a project in mind, whether at the appraisal stage or already in progress, we are happy to discuss the options.
If you are working on a potential heavy refurbishment project we are happy to give you a view on fundability and likely terms without any obligation - speak to our team to find out what is available, what it will cost, and what structure makes most sense for your deal.
Learn more about bridging loans
Use our development appraisal calculator
