Change of Use and Commercial to Residential Conversion Finance
Converting redundant commercial property into residential accommodation is one of the most active value-add strategies in the current UK market. We arrange commercial to residential conversion finance for developers and investors across England, from single-unit office conversions under permitted development through to large multi-unit schemes requiring full development facilities.
Change of Use and Conversion Finance: At a Glance
Access to specialist and private lenders with appetite for conversions
Finance for light and heavy refurbishment conversions, including complex multi-unit schemes
Loans structured against day-one value or gross development value
Terms from 3 to 24 months, with exit routes agreed at the outset
Indicative terms typically within 24 hours of enquiry
Is Conversion Development Finance Right for Your Project?
Commercial to residential finance covers a wide range of deal types, and the right product depends on the scope of works, the planning position, and how you intend to exit. This page is aimed at developers and investors who understand the fundamentals of property finance and are working on a conversion project with real commercial substance.
You are likely in the right place if you are acquiring a commercial building with a view to converting it to residential or mixed-use, if you already hold a commercial asset and want to unlock its residential value, or realise value through planning permission, prior approval or change of use, or if you have prior approval or permitted development rights in place and need to move quickly. We work on loan sizes from £500k upwards, including larger schemes where appropriate.
Typical borrower profiles include experienced developers working on regional office stock or town centre repositioning projects, portfolio investors repositioning surplus retail premises or semi-commercial buildings, and smaller developers pursuing office to residential conversion finance on individual permitted development schemes.
If the end-use of your scheme is commercial, then commercial development finance is a more suitable product.
How a Conversion Development Finance Loan Works
Commercial to residential conversion finance sits between bridging and development finance in practice, and which product applies depends on the scope of works involved.
For lighter conversions where the building shell remains largely intact and the works are primarily fit-out, a conversion bridging loan is usually the right vehicle. It is short-term, interest is typically rolled up, and the loan is drawn against the current asset value with a refinance or sale as the exit. These facilities are faster to arrange and suit projects where construction risk is limited.
For heavier schemes, including significant structural alteration, layout reconfiguration, or the creation of multiple self-contained units, a development finance facility with staged drawdowns is more appropriate. Drawdowns are tied to a schedule of works and monitored by the lender's appointed surveyor. The distinction matters because lenders price and structure these facilities differently, and applying the wrong product to a project creates friction at credit stage.
Permitted development has materially expanded the number of viable conversion opportunities. Many investors use these schemes specifically to create planning-led value uplift before development or refinance. Where a project qualifies for prior approval under Use Class E, planning uncertainty is reduced, which generally translates to a broader lender pool and improved terms. Lenders view prior approval schemes more favourably because the route to residential use is already established. Full planning consent offers a similar benefit, though the timeline to that position is longer.
What lenders assess is consistent across the market: borrower experience, the quality of the schedule of works, the gross development value on completion, and the credibility of the exit. A well-evidenced exit, whether a bridge-to-let refinance, a sale of individual units, or a commercial investment refinance, carries significant weight at credit. Schemes where the exit is vague or poorly costed are where applications stall.
Timelines vary. A straightforward office to residential conversion under prior approval can be funded within three to four weeks from application. Multi-unit schemes with full planning, structural input, and staged drawdowns typically require six to eight weeks to reach first draw.
Key Criteria and Indicative Terms
Lenders assess commercial conversion loans on different metrics from standard residential or investment products.
Development facilities for conversion projects will be considered on a loan to cost (LTC) basis of 70% to 85% of total project costs. This will vary depending on the borrower experience and the quality of the scheme. Loans are also offered on a loan to gross development value (LTGDV) up to 65% or 70% at completion, although some specialist lenders may stretch to 75% for a strong project. For lighter conversions, loan to value against the day-one asset price is the relevant measure, with most lenders lending to 70% to 75% LTV.
Indicative rates on conversion bridging loans currently range from 0.75% to 1.25% per month. Development finance is priced on a case-by-case basis and depends on scheme complexity, borrower profile, and lender appetite. Arrangement fees run from 1% to 2%, and exit fees may apply depending on the facility. All-in cost of funds is a more useful figure than the headline rate, and we model this for every client before recommending a lender.
Loan terms typically run from six to eighteen months for lighter conversions, with development facilities extending to twenty-four months for larger schemes. Security is a first charge over the subject property, and personal guarantees are standard. Change of use finance and permitted development finance do not require the asset to have an existing residential use. The lender underwrites on a forward basis, assessing completed GDV and the reliability of the conversion programme.
Typical Conversion Projects We Finance
Office to residential conversions under permitted development. Regional office stock and secondary town centre office buildings where prior approval provides a lower-risk route to residential use, without the delays and uncertainty of a full planning application. These projects are often funded because of the planning gain created through the change of use.
Vacant retail to residential. Surplus retail premises on secondary high streets or edge-of-town locations being converted to self-contained flats or small residential schemes, often under change of use finance where prior approval applies.
Semi-commercial repositioning. Buildings with a functioning commercial ground floor and underused or vacant upper floors, where the upper floors are converted to residential while the commercial element is retained. Finance is secured against the whole building and assessed on the blended exit value. We arrange semi-commercial mortgages for clients looking to hold these assets long-term.
Mixed-use conversions. Projects where part of a building retains commercial use and part is converted to residential, requiring a lender comfortable with a mixed-use exit and the valuation complexity that comes with it.
Light industrial to residential. Former storage, warehouse, or light industrial units with planning consent or permitted development rights to convert to residential, typically in urban fringe or inner-city locations where residential demand is strong.
Multi-unit flat conversions. Larger commercial premises with full planning consent for ten or more apartments, requiring a monitored development finance facility with staged drawdowns and a clear unit sale or portfolio refinance exit.
Heavy refurbishment and change-of-layout projects. Schemes involving significant structural alteration, reconfiguration of floor plates, or extension of the existing building envelope, where the finance requirement sits firmly within development finance rather than bridging loans.
Bridge-to-let conversion projects. Conversions where the exit is a refinance onto a long-term investment mortgage rather than a sale. Commonly used by investors retaining units as an HMO, small block, or portfolio asset. We arrange HMO mortgages and commercial investment mortgages as part of the exit planning process, ensuring the refinance route is confirmed before the bridging facility is drawn.
Light Refurbishment vs Heavy Refurbishment Conversions
Lender appetite and product availability will vary between light and heavy refurbishment conversions, so determining the category of the project early in the process is key.
A light refurbishment conversion is typically where the building shell or structure remains intact and layout changes are minimal. Works will be largely cosmetic, or include mechanical and electrical changes. An example might be an office floor being fitted out to residential specification, with new kitchens, bathrooms, and finishes but no structural alteration. These projects suit a bridging facility drawn in one or two tranches, without the need for staged monitoring.
Heavy refurbishment conversions involve structural alteration, significant layout changes, new external openings, or the creation of self-contained units from undivided floor space. A vacant commercial premises being converted into six apartments with new structural openings, separate utility connections, and communal areas will be assessed as a development project by most lenders, with the facility priced and structured accordingly.
The line between the two categories is not always obvious from the outset, and lenders take a view based on the schedule of works and the build cost as a proportion of asset value. Establishing the right classification before approaching lenders avoids delays and ensures the facility is priced fairly from the start.
Why Use a Specialist Broker
Commercial to residential conversion finance sits outside the appetite of most mainstream lenders. The combination of planning risk, construction risk, and an asset in transition requires lenders who assess projects on a forward-looking basis, and accessing those lenders requires relationships that a specialist broker maintains.
We work with specialist development lenders, private banks, and select family office funders who have active appetite for conversion schemes, including projects involving unmortgageable properties in their current state where the residential potential is clear. Where a scheme has complexity, a challenging planning position, a non-standard asset, or a borrower with a mixed track record, we know which lenders will engage and how to present the case to generate competitive terms.
Facility structure materially affects project profitability. Drawdown timing, partial release mechanisms, whether a rolled-up or serviced interest arrangement suits your cash position, and how the exit is framed in the credit application all influence both cost and likelihood of approval. These are the details that make a real difference on a conversion scheme, and where specialist broking earns its place.
For context on how conversion finance sits within the broader funding landscape, our development finance page covers the full product range, and our bridging loans page details short-term options in more depth.
Clients find our development finance calculator extremely helpful in modelling their development viability.
Our Process: From First Call to First Drawdown
Initial Enquiry
Indicative terms
Lender Selection
Application and Credit Pack
Valuation and Due Diligence
Completion and drawdown
Conversion Development Finance FAQs
In many cases, yes. Permitted development rights allow certain commercial buildings, particularly those in Use Class E, to be converted to residential without a full planning application, subject to prior approval from the local authority. Lenders generally require prior approval to be in place before drawdown. Some lenders will consider lending against the acquisition ahead of prior approval, but this carries additional planning risk and is priced accordingly. This is often where specialist planning gain finance can play a role, particularly where the objective is to secure consent before progressing to a wider development strategy.
A conversion bridging loan is usually drawn in fewer tranches (sometimes just one or two), suits lighter refurbishment projects, and is typically simpler and faster to arrange. Development finance uses multiple staged drawdowns, valued against a schedule of works monitored by a surveyor, and is better suited to multi-unit schemes or projects with significant build programmes. The right product depends on the scope and complexity of your scheme.
Lighter bridging-style facilities typically complete within four to six weeks from application. More complex development finance facilities may take six to ten weeks, depending on scheme complexity and lender credit timelines. We manage the process actively and push for speed wherever the lender and legal process allows
Lenders typically offer up to 70% to 75% LTV against the day-one asset value for bridging-style conversions, and up to 80% to 85% LTC on development facilities. LTGDV is generally capped at 65% to 70%, with some specialist lenders extending to 75% on strong schemes with experienced borrowers.
Experience is a positive factor in lender assessment. It is not always a hard requirement, but borrowers new to conversion projects will need to demonstrate credibility in other ways, typically through a strong build team, a well-evidenced schedule of works, and a clear exit strategy. The quality of the project and the people delivering it matters as much as the borrower's track record on paper.
Yes. Mixed-use conversion finance is available where part of the building retains a commercial use alongside the new residential element. Lenders assess these individually, and the mix of uses affects both the GDV calculation and exit options. A clearly evidenced mixed-use exit, whether sale or refinance, is important for lender confidence. For investors retaining the commercial element long-term, we also arrange commercial investment mortgages as part of the exit.
Loan extensions are available from most specialist lenders, subject to application and a fee. We build contingency into the programme timeline when structuring the initial facility and set out the cost of overrun clearly before the loan is drawn. Communication with the lender as soon as a delay becomes apparent is the most effective way to manage the situation; extensions arranged in advance are almost always cheaper and simpler than those requested after the original term has expired.
Arrangement fees of 1% to 2% are standard. Valuation fees vary by lender and asset value. Legal fees are payable on both sides. Development facilities include a monitoring surveyor fee, typically calculated as a percentage of build cost. Exit fees apply on some facilities. We provide a full cost-of-funds breakdown before you commit to any lender.
Commercial conversion finance is designed for developers and investors undertaking a change of use or redevelopment project. A conversion mortgage is typically associated with residential conversions such as barn conversions or owner-occupied properties and is assessed differently by lenders.
Review Your Conversion Scheme With Us
The UK market for commercial to residential conversion continues to deepen as vacant commercial assets, redundant retail premises, and surplus regional office stock create a sustained pipeline of viable residential development opportunities. The finance market has kept pace, but it remains a specialist area where lender selection, facility structure, and exit planning all affect the outcome.
If you have a conversion project at any stage, from early feasibility through to a deal that needs to move quickly, we are happy to give you a frank 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.
