Development Finance London
Development finance in London is short-term funding that covers the purchase of land or property and the cost of building or converting it within Greater London. It is structured as a two-tranche facility: a day-one drawdown for the site, and a build tranche released in stages tied to construction progress. Lender appetite varies sharply by borough, scheme type and London Plan position. The questions that decide whether your scheme gets a sensible offer or a polite decline are not generic. They are London-specific.
FD Commercial arranges development finance for London schemes from £250,000. We work across Prime Central, Inner London, Outer London and the M25 commuter belt, on senior debt, stretched senior, and senior plus mezzanine structures. Our broker fee is up to 1% of the loan amount.
Rates and lending metrics are indicative. They vary by lender, scheme type, location within Greater London and borrower profile. Speak to us for figures specific to your project.
How does development finance work in London?
The mechanics are the same as any UK development loan, but London adds three structural complications that affect lender selection and pricing. First, build costs run materially above the national average, so loan-to-cost gets stretched. Second, affordable housing requirements bite hard above the borough threshold, reducing realisable GDV. Third, the lender pool capable of pricing London schemes sensibly is smaller than the broader UK market, particularly above £5m and in Prime Central postcodes.
Funds release in two tranches. The day-one drawdown covers the site purchase. Build tranches release in stages signed off by the lender's monitoring surveyor: typically slab, structure, watertight, first fix, second fix and completion. Interest rolls up rather than being serviced monthly during the build. The loan is sized against gross development value rather than current site value, which is what makes development finance the right product for projects where the post-completion value materially exceeds the cost basis.
Most London schemes exit at practical completion via sale, refinance to a residential mortgage, or refinance to a buy-to-let or holiday let. The exit needs to be evidenced from day one. Comparable sales data, agreements in principle on residential refinance, or a serious agent strategy if selling. Lenders want to see the exit on the application, not after.
What rates apply to development finance in London?
Senior debt on London development finance typically prices from 0.85% to 1.25% per month, plus an arrangement fee of 1% to 2% of the gross loan. Pricing is shaped by lender, scheme size, borough, planning position and borrower track record. Prime Central London experienced developers with strong exits can price keener than the national average. Outer London infill schemes for first-time developers sit at the higher end.
| Facility type | Typical rate | Notes |
|---|---|---|
| Senior debt | 0.85% – 1.25% pm | First charge. Up to 65–70% LTGDV in London. |
| Stretched senior | 1.10% – 1.40% pm | Single facility blending senior + mezz. Up to 75% LTGDV. |
| Standalone mezzanine | 1.40% – 2.00%+ pm | Second charge. Sits behind senior. Higher rate reflects subordination. |
| Arrangement fee | 1% – 2% of gross loan | Added to facility, not paid upfront. |
| Exit fee | 0% – 1% of gross loan | Some lenders only. |
| Valuation fee | £3,500 – £15,000+ | London valuers are heavily booked. Allow two to three weeks. |
| Monitoring surveyor | 0.5% – 1% of gross loan | Mandatory. Drawn from the loan in tranches. |
| Broker fee (FD Commercial) | Up to 1% of loan | For development finance. |
Interest is almost always rolled up rather than serviced. A £3m gross loan running for 18 months at 1.0% pm with 1.5% arrangement and standard fees produces total finance costs in the region of £600,000 to £700,000. The exact figure depends on drawdown profile because interest only accrues on the drawn balance.
According to RICS BCIS regional building cost data, London is consistently the highest-cost UK region for residential construction, with build costs running approximately 30% to 40% above the national average. This premium drives the higher use of mezzanine finance on London schemes compared to regional development.
What LTV and LTGDV do London lenders offer?
London senior development debt typically caps lower on LTGDV than the national average because Prime Central and Inner London GDVs are high relative to land cost. The same 65% LTGDV that produces a comfortable senior facility in a regional market produces a stretched one in W1. Lenders compensate with stretched senior or separate mezzanine structures.
| London zone | Senior LTGDV | Stretched senior LTGDV | Senior + mezz total LTC |
|---|---|---|---|
| Prime Central (W1, SW1, SW3, NW1) | 60% – 65% | 70% – 75% | Up to 90% |
| Inner London | 65% – 70% | 72% – 78% | Up to 90% |
| Outer London | 65% – 70% | 70% – 75% | Up to 90% |
| M25 commuter belt | 70% | 75% | Up to 90% |
The binding constraint in London is more often LTGDV than LTC. A first-time London developer should expect a 5 to 10 percentage point haircut on LTGDV until they have a delivered scheme on their CV. This is recoverable on the second project. Joint ventures with experienced developers can unlock terms that solo first-time applicants cannot access on their own.
Which UK lenders fund London development schemes?
London development finance is served by four lender categories. Specialist development funds make up the bulk of the active market, particularly between £1m and £15m gross loan size. Challenger banks with dedicated property teams fund the larger end (£10m+) where credit committees are comfortable. Regional commercial lenders covering the South East lend selectively in Outer London. A small number of mainstream banks fund Prime Central schemes for prime borrowers, but their underwriting is conservative.
Lender selection in London matters more than rate. Some lenders cap at £5m gross loan, some only fund inside the M25, some have appetite for Class MA office conversions and others avoid them. Some lenders shy away from high-rise above six storeys. Some require the borrower to have completed a minimum number of London schemes before they will engage. We work an active panel of lenders covering all four categories. The right lender for your scheme depends on the specifics: location within Greater London, planning route, borrower profile, exit certainty and scheme typology.
How does London borough variation affect development finance?
Lender appetite, planning policy, build cost, exit market and yield assumptions all vary materially by borough. The right structure for a Croydon office conversion is not the right structure for a Hackney new build townhouse. Below are the main groupings as lenders see them.
Prime Central London (W1, SW1, SW3, NW1, postcodes around Mayfair, Belgravia, Chelsea, Knightsbridge, Marylebone)
High GDV, high build cost, narrower lender pool. Senior LTGDV typically caps at 60% to 65%. Specialist Prime Central lenders with experience underwriting £15m+ schemes are the practical pool. Mezzanine is common because the equity gap on senior alone is too large for most developers to cover. Build costs north of £4,000 per square metre on prime specification. Exit market is liquid for completed product but timing-sensitive: a six-month delay can move the achievable price by 5% in either direction.
Inner London South-West (Wandsworth, Battersea, Clapham, Putney)
Strong family buyer market, high GDVs on detached and semi-detached new build, conversion market for large period properties to flats. Lender appetite is broad. Affordable housing thresholds are tighter in Wandsworth, with smaller schemes still triggering financial contributions. Senior LTGDV typically 65% to 70%. The Battersea Power Station regeneration zone has its own dynamics with the additional supply weighing on smaller-scale schemes.
Inner London North and East (Hackney, Stoke Newington, Tower Hamlets, Newham, Stratford)
Significant Class MA office-to-residential conversion activity in Tower Hamlets, Newham and the Olympic regeneration zones. Dense urban infill schemes typical. Build costs run high due to site access constraints and party wall works on terraced sites. Lenders comfortable with conversion and high-density schemes are the working pool. Affordable housing requirements vary: some boroughs require off-site contributions, others require on-site units. Stratford and the Olympic regeneration corridor have distinct lender appetite given the scale of regeneration activity.
South London (Croydon, Lewisham, Bromley, Greenwich)
The Croydon Class MA office-to-residential conversion market is among the largest in the UK. Greenwich peninsula and Royal Docks have ongoing major regeneration. Senior LTGDV typically 65% to 70%. Build costs slightly below Inner London but exit yields have softened in some Outer South postcodes, which lenders factor into GDV underwriting. Lenders specifically covering Class MA conversions are active here.
West London (Ealing, Brent, Hounslow, Hammersmith and Fulham)
Crossrail-driven uplift in some West London corridors continues to support new-build values. Brent and Ealing have active conversion markets. Hammersmith and Fulham sits closer to Prime Inner London for finance purposes. Build costs and exit values vary materially within West London depending on station proximity and borough.
Most London boroughs require 35% to 50% affordable housing on residential schemes above the borough's unit threshold (commonly 10 units, but varies). Below the threshold, schemes either contribute via a financial payment or are exempt. Source: The London Plan, the Mayor's strategic planning framework. Lenders factor affordable housing into the GDV they will lend against because affordable units sell at a discount to private sale values.
Affordable housing requirements and London Plan referrals
The affordable housing requirement is one of the most common lender questions on a London scheme. Above the borough threshold, applicants face a 35% to 50% affordable housing obligation, structured as on-site units, off-site provision, or a financial payment in lieu. Lenders factor this into the GDV they will lend against because affordable units sell to registered providers at a discount to private sale values.
Scheme structuring matters near the threshold. A 9-unit scheme that escapes the affordable housing requirement can produce more financeable economics than a 12-unit scheme of equivalent GDV but with 35% affordable. Where the threshold sits at the council level (not the GLA), and where the unit count of your scheme can be adjusted without commercial damage, this is worth modelling at the appraisal stage.
London Plan referrals apply to schemes meeting defined size thresholds: 150 residential units or more, or buildings over 30 metres tall outside the City of London. Referral adds time to the planning timeline (typically two to four months) and can result in conditions or contributions imposed by the Greater London Authority. Lenders will fund referred schemes but factor the timeline extension and referral risk into their underwriting and term sizing.
Mezzanine finance and stretched senior in London
Mezzanine and stretched senior are more common on London schemes than nationally because the equity required on senior debt alone is often too large for the developer to commit. A £8m GDV scheme financed at 65% LTGDV via senior alone needs £2.8m of borrower equity. Mezzanine bridges that gap, sitting behind the senior debt with a second charge, allowing total leverage to reach 90% LTC.
Two structures are used. Stretched senior blends senior and mezzanine into a single facility from one lender, simplifying the legal documentation and intercreditor position. Pricing typically falls between pure senior and standalone mezzanine. Senior plus mezzanine combines facilities from two separate lenders. Senior is at first charge, mezz at second charge, with an intercreditor deed governing the relationship between the two. This unlocks higher total leverage but is more legally complex.
Mezzanine pricing of 1.40% to 2.00%+ per month reflects the subordinated position. The trade-off is straightforward: extra leverage at higher cost. For a developer with limited equity but a strong scheme and exit, the structure works. For a developer with sufficient equity, paying mezzanine pricing on the second 25% of LTC rarely represents value.
Worked example: Class MA office-to-residential in Walthamstow, E17
The following example is broker-realistic for a Class MA prior approval office-to-residential conversion creating four self-contained one and two-bedroom flats. Numbers are illustrative.
| Line | Amount |
|---|---|
| Office acquisition (with prior approval granted) | £1,200,000 |
| Build cost (320 sqm at £2,000/sqm) | £640,000 |
| Professional fees (architect, QS, planning, services) | £75,000 |
| Contingency (10% of build) | £64,000 |
| Total project cost (excluding finance) | £1,979,000 |
| Gross development value (4 flats averaging £700,000) | £2,800,000 |
| Loan at 65% LTGDV | £1,820,000 |
| Loan at 75% LTC | £1,484,000 |
| Senior loan available (lower of the two) | £1,484,000 |
| Borrower equity required (senior only) | £495,000 |
| Mezzanine to take total LTC to 90% | £297,000 |
| Borrower equity required (with mezz) | £198,000 |
This is a representative LTC-binding scenario. The 75% LTC test produces a smaller loan than 65% LTGDV, so LTC governs the senior facility. Adding mezzanine takes total LTC to 90%, halving the equity requirement at the cost of higher blended finance pricing. Total finance costs (interest at 1.05% senior plus 1.7% mezz over 14 months, arrangement, monitoring and legals) land in the region of £290,000 on this profile. Sale at GDV of £2.8m net of agent and legal costs (call it £2.7m) produces a developer profit of approximately £430,000 against £198,000 equity in. Annualised return on equity is strong because of the leverage.
How long does development finance take to arrange in London?
From a complete application pack to first drawdown, allow four to eight weeks for a conversion or permitted development scheme, six to ten weeks for ground-up new build. The main variables are valuation turnaround (London valuers are heavily booked, so two to three weeks is typical) and monitoring surveyor instruction. Having planning permission, a full QS-prepared cost schedule, contractor contracts, KYC documentation and the borrower's track record evidence ready from day one significantly reduces the timeline.
For time-pressured purchases such as auction or off-market deals where the seller wants completion in 28 days, bridging is the bridge into a development facility. The bridge funds the purchase, the development facility refinances the bridge once full underwriting and consents are in place. We arrange both legs as a single piece of work where the timeline requires it.
The Bank of England base rate sits at 3.75% as of April 2026, having reduced from 4.5% during 2025. Most London development finance pricing is fixed for the term rather than tracker-linked, so the base rate matters more for exit refinance pricing than for the development loan itself.
Frequently asked questions
What is development finance in London?
Development finance in London is short-term funding for the purchase of land or property and the cost of building or converting it within Greater London. It runs in two tranches: a day-one drawdown for the site purchase and a build tranche released in stages tied to construction progress, signed off by the lender's monitoring surveyor. Most London schemes run for 12 to 24 months and exit via sale or refinance to a residential or buy-to-let mortgage.
What rates apply to development finance in London?
Senior debt typically prices from 0.85% to 1.25% per month in London, depending on lender, scheme size, location and borrower track record. Stretched senior facilities price 1.10% to 1.40% per month. Standalone mezzanine debt prices 1.40% to 2.00%+ given its second-charge position. Arrangement fees of 1% to 2% are standard.
What LTV and LTGDV do London lenders offer?
Senior development debt in London typically caps at 60% to 65% LTGDV in Prime Central and 65% to 70% in Inner and Outer London. Senior LTC sits at 70% to 75%. Stretched senior pushes to 75% to 80% LTGDV and up to 85% LTC. With separate mezzanine sitting behind senior, total leverage can reach 90% LTC. The binding constraint is more often LTGDV than LTC because land prices are high relative to total cost.
Which UK lenders fund development finance in London?
London development finance is served by specialist development funds (the bulk of the market), challenger banks with dedicated property teams, regional commercial lenders covering the South East, and a small number of mainstream banks for prime borrowers. Lender selection in London matters more than rate. Some lenders cap at £5m gross loan, some only fund inside the M25, some have appetite for Class MA conversions and others avoid them.
Why is London development finance more expensive to build than the national average?
Build costs in London typically sit 30% to 40% above the UK average due to higher labour rates, longer logistics chains, restrictive site access in dense boroughs, party wall and underpinning works on terraced sites, and the higher specification expected to achieve London prices on exit. RICS BCIS data confirms London is the highest-cost UK region for residential construction.
How does affordable housing requirement affect development finance in London?
Most London boroughs require 35% to 50% affordable housing on schemes above a unit threshold (commonly 10 units, but it varies). Below the threshold, schemes either contribute via a financial payment or are exempt. Lenders factor the affordable housing requirement into the GDV they will lend against because affordable units sell at a discount to private sale.
When is a London Plan referral required and how does it affect finance?
London Plan referrals are required for schemes meeting defined size thresholds: typically 150 residential units or more, or buildings over 30 metres tall outside the City. Referral adds time to the planning process and can result in conditions imposed by the GLA. Lenders fund referred schemes but factor the timeline extension into the loan term.
What is mezzanine finance and when is it used in London?
Mezzanine finance is a second-charge loan that sits behind senior development debt, allowing total leverage to reach 90% LTC. It is used widely in London because senior LTGDV gets squeezed at high values: a £8m GDV scheme financed at 65% LTGDV via senior alone needs £2.8m of borrower equity. Mezzanine bridges that gap. The trade-off is cost (1.40% to 2.00%+ per month) and intercreditor complexity.
Can a first-time developer get development finance in London?
Yes, but the London market is more demanding than the national average. Lenders want a strong professional team, realistic cost schedule reflecting London build cost premiums, planning consent in place, and a credible exit. Smaller conversions and Class MA office-to-residential schemes are easier to place than ground-up new build for first-time London developers. LTGDV typically reduces by 5 to 10 percentage points for first-time applicants.
How long does development finance take to arrange in London?
From a complete application pack to first drawdown, allow four to eight weeks for a conversion or permitted development scheme, six to ten weeks for ground-up new build. The main variables are valuation turnaround (London valuers run heavy workloads) and monitoring surveyor instruction. Having planning permission, full cost schedule, contractor contracts and borrower KYC ready from day one reduces the timeline significantly.
London schemes succeed or fail on lender selection. Borough policy, build cost premium, affordable housing thresholds and the London Plan all affect what a lender will price, and which lender will price it. We arrange senior, stretched senior and mezzanine across Greater London, from £250,000.
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