01: Framework

The Four Variables That Determine Every Application

Before looking at each scenario separately, it is worth setting out the framework that runs through all development finance applications. Whatever the scheme type, and whatever the borrower’s level of experience, development lenders assess four variables consistently. Understanding these from the outset shapes every other decision.

RICS stands for the Royal Institution of Chartered Surveyors. Commissioning an independent RICS valuation before approaching lenders is always worthwhile and puts the application in a materially stronger position from the outset.

The professional team matters more than many first-time developers initially realise. Contractors, solicitors, project managers, and monitoring surveyors are all assessed individually. A strong scheme with a weak contractor or an inexperienced solicitor can still become difficult to fund regardless of the financial numbers.

02: First-Time Developers

Development Finance for First-Time Developers

What “considered on merit” actually means

Most lenders state that first-time developers are “considered on merit.” In practice, this means the lender is looking for compensating strengths elsewhere in the application to offset the risk created by the absence of a track record.

The four compensating factors that carry the most weight are: an experienced main contractor with a demonstrable record on comparable schemes; a lower leverage requirement; a simpler scheme such as a single residential unit or a small conversion rather than a complex multi-phase development; and a professional team, including a project manager and quantity surveyor, that collectively brings the experience the developer does not yet have personally.

None of these individually removes risk. Together, they can make a lender substantially more comfortable with a borrower who does not yet have an established track record.

The rate is often the wrong number to focus on

One of the most common mistakes first-time developers make when comparing lenders is focusing almost exclusively on headline interest rates. This is also the mistake with the most significant financial consequences.

Most development lenders quote a monthly interest rate, typically between 0.65% and 1.10% per month for residential schemes in 2026, though these are indicative ranges that vary by lender, scheme complexity, leverage, and developer experience. The Loan to Cost ratio (LTC), expressed as the percentage of total project cost the lender will advance, often has a greater effect on return than the monthly rate itself.

A concrete example: a developer with £150,000 of equity considers two lenders. Lender A offers 0.70% per month but advances only 60% of a £400,000 total project cost, requiring £160,000 from the developer. The scheme does not work with available equity. Lender B offers 0.82% per month at 80% LTC, requiring £80,000 from the developer. The scheme works and £70,000 remains for contingency or another project. The higher-rate lender produces the better outcome.

What you can realistically borrow

As a guide, most lenders working with first-time developers will advance up to 70 to 75% of total project cost and cap the loan at 60 to 65% of completed GDV. These are indicative figures and actual terms will depend on the lender, the scheme, and the strength of the application. The rate premium for a first-time developer against an experienced one is typically in the range of 0.10 to 0.25% per month, though this varies by lender and scheme.

Some specialist lenders will advance up to 85% of costs, but they price this increased leverage accordingly. Higher leverage is not always better. A larger loan against a scheme with thin margins can leave a developer in a difficult position if costs overrun or values soften.

If you cannot meet the equity requirement: mezzanine finance

A common position for first-time developers is that the senior debt facility covers 70 to 75% of costs, but finding the remaining 25 to 30% from equity is not straightforward. Mezzanine finance is the mechanism that addresses this gap.

Mezzanine finance is a second-charge facility provided by a separate lender that sits behind the senior debt. It is not additional borrowing from the same lender. The mezzanine lender takes the second legal charge on the property and is repaid after the senior lender at exit. Together, the two facilities can stretch total borrowing to 85 to 90% of costs. Mezzanine is priced at a premium to senior debt to reflect its higher risk position and adds complexity to the legal structure. Not all senior lenders permit mezzanine on their facilities; confirming this at outset is essential if you intend to use it.

The total cost of borrowing: what first-timers consistently underestimate

The interest rate and arrangement fee are the most visible costs but they are not the only ones. First-time developers regularly find their appraisals are materially wrong because they have not budgeted for the full cost structure. The principal items beyond rate and arrangement fee are:

1. Monitoring surveyor fees. The monitoring surveyor is appointed by the lender and paid by the borrower. Their role is to inspect works and certify each drawdown stage throughout the build. Expect a fixed appointment fee at outset plus a per-inspection cost for each site visit. Budget these explicitly; they are not included in the lender’s arrangement fee.
2. Valuation fees. An independent RICS valuation is required before the facility is confirmed. For schemes under £1 million GDV, costs typically range from £750 to £2,000. For larger or more complex schemes, significantly more. Payable upfront and usually non-refundable if the deal does not proceed.
3. Legal fees, both sides. The borrower normally pays both their own solicitor and the lender’s solicitor. On facilities above £500,000, combined legal costs of £5,000 to £15,000 are common. Budget for both at the outset.
4. Personal guarantees. Most lenders require a personal guarantee from the borrower, particularly for first-time developers or those borrowing through a limited company. This is not a cost in itself, but it is a material personal commitment that is often not highlighted in product summaries. Understand exactly what you are signing before the offer is issued.
5. Broker fees. Where a broker is used, fees are charged either as a percentage of the facility or a fixed amount agreed in writing before any work begins.

Together, items 1 to 3 can add 3 to 5% to the effective cost of a facility beyond the headline rate and arrangement fee. Building them into the appraisal from the outset avoids an unpleasant discovery at drawdown.

Preparing your application properly

The most common reason development finance applications from first-time developers are declined or reduced is not inexperience itself but an incomplete or poorly packaged submission. Before approaching any lender, prepare the following:

1. A detailed, itemised build cost schedule supported by a contractor’s quote or schedule of rates
2. Independent GDV evidence from a qualified RICS surveyor, not your own estimate
3. A clear exit strategy with supporting evidence: comparable sales data if selling, a mortgage in principle if refinancing
4. Planning documentation, including a complete list of any conditions that must be discharged before works commence
5. A summary of your professional team with brief details confirming relevant experience for each member
6. A project programme with realistic timelines, including contingency for weather, contractor availability, and statutory processes

A clean, well-structured submission will consistently outperform a stronger scheme presented poorly. Addressing the lender’s likely concerns before they arise is the most effective way to accelerate a decision.

For a full breakdown of what development lenders assess, see our Development Finance UK guide →

03: Small Schemes

Small Development Finance: Schemes Below £500,000

A distinct part of the market

The sub-£500,000 development finance market operates differently from larger schemes and is served by a different subset of lenders. Understanding this distinction prevents the frustration of approaching lenders whose minimum facility size excludes you, or whose processes are calibrated for much larger transactions.

At this level, the typical profile is a single residential unit, a small conversion of two or three flats, a commercial-to-residential change of use, or a refurbishment scheme with a material structural element. The borrower is often a landlord extending into development for the first time rather than a professional developer.

Finding the right lenders at this level

Several specialist lenders have positioned themselves specifically for sub-£500,000 facilities, offering faster decisions and less onerous professional team requirements than institutional lenders active on larger schemes. When testing whether a lender is genuinely active at this level, ask three specific questions: what is your minimum facility size; do you require a full independent monitoring surveyor on schemes below £500,000; and what is your typical timeline from application to first drawdown? These questions quickly distinguish lenders with genuine appetite from those who nominally consider small schemes but rarely approve them.

Some bridging lenders also have the capacity to structure light development facilities at this level, particularly for conversion or refurbishment schemes. A broker with access to both product types will often identify a more appropriate and cost-effective structure than approaching development lenders exclusively.

How smaller schemes are assessed differently

The monitoring surveyor requirement, which is standard and non-negotiable on larger schemes, is sometimes modified at sub-£500,000 level. Some lenders will accept desktop monitoring or a reduced inspection regime rather than a full independent monitoring surveyor appointment. This reduces both cost and administrative burden, but the arrangement must be confirmed explicitly at heads of terms stage (the point at which the main commercial terms are agreed before legal work begins), as it varies significantly by lender.

GDV evidence requirements remain the same regardless of scheme size. Even on a single unit conversion with a projected GDV of £300,000, the lender requires independent market evidence from a qualified surveyor. This is the area where small scheme applicants most commonly underestimate what is required.

Rates at this level sit broadly in line with the wider market at 0.75% to 1.10% per month, though the lowest rates available to experienced developers on larger schemes are generally not accessible below £500,000. Some lenders also apply a minimum arrangement fee that represents a disproportionately high percentage on very small loans.

Two practical points specific to small schemes

The contingency deserves particular attention. On a small scheme, a standard 5% contingency may represent only £10,000 to £20,000 of headroom. Build cost overruns of this magnitude are routine even on straightforward conversions. A contingency of 10%, which is defensible on most small schemes, should be built into the appraisal from the outset and included explicitly in the facility request.

The day-one land cap also warrants careful modelling before committing to a purchase price. Most lenders advance 60 to 70% of the site or property purchase price on day one, with the remainder of the facility drawn against build progress. On a small scheme where the purchase price represents a large proportion of total costs, this can meaningfully constrain how much cash the lender releases at acquisition. Understanding this figure before exchange prevents a situation where the loan does not cover the full purchase cost.

04: Permitted Development

Permitted Development Finance: Class MA Conversions

What Class MA permitted development is

Class MA permitted development rights allow the conversion of commercial, business, and service use properties to residential use without a full planning application in most circumstances. Introduced in 2021 and subsequently expanded, Class MA has opened a significant volume of conversion opportunities, particularly for vacant or underused office and retail units.

The process requires a prior approval application to the local planning authority rather than full planning permission. The authority assesses a defined set of matters and either grants or refuses prior approval. The cost is substantially lower than a full planning application and the statutory timeline is 56 days from validation.

For finance purposes, the key distinction is planning certainty. A property with a confirmed Class MA prior approval notice is treated by most lenders as having resolved planning risk, equivalent in practical terms to full planning consent. A property where prior approval has not yet been obtained carries planning risk that lenders will price or structure accordingly.

In practice, obtaining prior approval before approaching development lenders will materially improve your terms and lender appetite in almost every case. Some lenders will consider an application subject to prior approval, particularly for experienced developers on well-evidenced schemes, but the majority prefer a confirmed position. Treating prior approval as a prerequisite for lender approach is the right default for most borrowers.

The GDV challenge in Class MA conversions

Commercial-to-residential conversions can be more difficult to value with precision than standard residential new builds, particularly in locations where comparable sales data for the specific unit type produced is limited. A conversion producing studio or one-bedroom apartments in a secondary town centre faces a more challenging valuation than one producing two and three-bedroom units in an undersupplied commuter town.

This means the quality of the independent valuation matters more than on a standard scheme. A RICS valuer with specific local knowledge of the residential market in the target location will produce a more defensible GDV figure. Lenders will apply a conservative stress test to GDV assumptions they consider optimistic, often reducing the facility significantly as a result.

Lender appetite and the 2026 planning context

Lender appetite for well-located, well-evidenced Class MA conversions is broadly supportive. The government’s revised National Planning Policy Framework enforces a “Brownfield First” approach, mandating higher densities around railway stations and giving explicit policy backing to commercial-to-residential conversion. Several specialist lenders have expanded their criteria to accommodate a wider range of conversion types and locations.

The schemes that continue to face difficulty are those in secondary or tertiary locations with weak demonstrated residential demand, those involving buildings with structural complications that significantly increase conversion costs, and those where GDV evidence is thin. Exit strategy is assessed as rigorously as the build programme. For conversion schemes, lenders are assessing not only whether the works can be completed, but whether the completed units can realistically be sold or refinanced within the proposed timeframe.

For detail on exit strategies for conversion schemes, see our Exit Strategy guide →

05: HMO Conversions

HMO Conversion Finance

Licensing and the implications for finance

A House in Multiple Occupation (HMO) conversion sits in a distinct segment of the development finance market. The additional regulatory, licensing, and management complexity of the product affects both the development facility and the refinance exit, and the two must be planned together from the outset.

Under the Housing Act 2004, a mandatory licence is required for any property occupied by five or more people forming two or more separate households and sharing facilities. Before most mainstream lenders will consider a refinance onto long-term investment finance, a licence must either be in place or an application must have been submitted to the local authority. The development lender is therefore assessing not only whether the conversion can be built, but whether the exit onto a licensed HMO mortgage is credible.

In Article 4 areas, the local authority has withdrawn permitted development rights for HMO conversion, meaning full planning consent is required. This adds planning risk, timescale, and cost. Confirming Article 4 status is one of the first due diligence steps for any HMO conversion, before any commitment is made to a purchase price.

Room count and lender requirements

Most lenders working in the HMO development space have minimum room count requirements. The threshold varies: some lenders require five or more lettable rooms, others will consider four, particularly in strong rental markets with demonstrated HMO demand. Schemes producing fewer than four rooms are generally better structured as standard bridging or refurbishment finance rather than a development facility. Where a scheme sits close to a lender’s minimum, confirming the position at enquiry stage avoids committing time and cost to a process that cannot complete.

How GDV is calculated for HMO conversions

For a standard residential scheme, GDV is based on comparable sales values. For an HMO, investment value is calculated differently: the lender takes the projected net annual rental income and divides it by a yield percentage to produce a capital value. In simple terms, if a property generates £30,000 net per year and the lender applies an 8% yield, the investment value is £375,000. The accuracy of the rental income evidence therefore underpins the entire GDV figure.

A developer who can present current market rents for comparable licensed HMOs in the same postcode, supported by a RICS valuer with specific knowledge of the local HMO rental market, is in a materially stronger position than one presenting projected rents without independent support. The management structure is also assessed: a confirmed arrangement with an experienced HMO management company reduces perceived exit risk and is worth confirming at application stage.

Planning the exit before drawing the development facility

Exiting a development facility onto a long-term HMO mortgage requires lenders that specialise in the product. Standard buy-to-let lenders do not assess licensed HMOs in the same way as single-let properties, and their income calculations, minimum room requirements, and licensing criteria vary considerably.

Obtaining a mortgage in principle from a named HMO lender before drawing down the development facility is the standard expected by most development lenders. It is substantive evidence that the exit is fundable. The cost of confirming this in advance is negligible compared to the risk of completing a conversion and discovering that the refinance market is more restrictive than anticipated.

Our Buy-to-Let Finance page covers HMO mortgage criteria in detail →