Bridging loans for permitted development are short-term loans secured against a property that a developer intends to convert using PD rights rather than a full planning application, and lenders use them because bridging loans for permitted development can complete in weeks, matching the speed at which PD conversions move once a prior approval or certificate is in hand. Businesses use them to buy or refinance office, retail or agricultural buildings destined for residential use before a mortgage or development facility takes over. Anyone weighing up their options can get a bridging finance for permitted development quote before committing to a lender.
For brokers who work in this space day to day, the appeal is clear. PD deals move fast, the paperwork is often lighter than a full planning application, and the lending market has matured so that most bridging lenders now have a clear view on which PD classes they'll fund and which they won't. This maturity means quotes come back quicker and pricing is more predictable than it was three or four years ago. For a broader introduction to how these facilities work, see our guide to what bridging finance actually is.
What this means in practice
In practice, a developer can move on a building the moment PD rights look achievable, rather than waiting for a mortgage lender who insists on full planning consent before they'll lend a penny.
PD rights let certain commercial buildings, most commonly offices under Class MA, change to residential use without a full planning application. What's needed instead is either a certificate of lawful use or, more often now, a prior approval application covering things like flooding, noise and transport impact. Bridging lenders understand this route and price for it differently to a straightforward planning gamble.
The commercial reason this matters is timing. Vendors selling PD-eligible buildings often have multiple bidders, and the buyer who can prove funding is in place, even before prior approval is granted, wins the deal. A bridging loan for permitted development gives you that certainty of funds while the paperwork catches up. Developers active in the capital often look at bridging loans in London for exactly this reason.
Another practical point often gets missed. Many PD-eligible buildings have sat empty for a year or more before they come to market, which means business rates, insurance and basic upkeep have been draining the vendor for months. That creates motivated sellers, and motivated sellers respond well to buyers who can move quickly with funds already arranged.
The type of buyer using this route has shifted noticeably. Five years ago it was mostly experienced developers with a track record of PD conversions. Now we're seeing more first-time investors, often landlords looking to diversify out of standard buy-to-let, who are attracted by the shorter timeline and the fact that PD conversions sidestep the usual planning committee lottery. This pattern is common among clients arranging bridging loans in Birmingham as well.
How it works
The loan is secured against the property itself, usually on a first charge basis, and sized against either current value or a blend of current value and the uplifted value once PD consent is secured.
Most lenders will lend against the existing use value from day one, then release further tranches or refinance onto a development facility once prior approval or a lawful development certificate is granted. Interest is typically added to the loan rather than paid monthly, which helps cashflow during a period when the building may not be earning rent.
Arrangement fees on these deals usually sit between 1.5% and 2% of the loan, with monthly interest rates ranging from around 0.65% to 1.1% depending on the lender's view of the planning risk and the strength of the exit. Valuation fees are payable upfront in almost every case, and you should budget for a second valuation if the loan is structured to release further funds once prior approval comes through. For current benchmarks, our breakdown of bridging loan rates across the UK is worth a look.
Exit routes fall into three categories: sale of the completed units, refinance onto a term mortgage once units are let, or drawdown of a dedicated development loan once planning risk has cleared. Lenders will want a clear view of which exit applies before they commit, because it drives how much risk they're actually taking on.
Solicitors matter more than people expect on these deals. Because the security is often a building in a transitional state, legally still commercial but functionally destined for residential use, lenders will ask their solicitors to check the title carefully for any restrictive covenants or leases that might complicate the PD route. A conveyancer who's done a few of these before can shave several days off completion simply by knowing what the lender's solicitors will ask for.
You should also flag that most lenders will want a schedule of works, even at bridging stage, particularly for barn conversions under Class Q where structural changes are often more extensive than people assume. Class Q allows a change of use but doesn't give a free pass on structural alterations, so lenders want comfort that the works are costed properly and that there's a contingency built in, typically 10% to 15% of the build cost.
Typical scenarios
The scenarios below are illustrative — composite examples reflecting the shape of deals we typically arrange, with figures and details adjusted so no example describes one specific, identifiable transaction.
A residential investor in Reading identified a two-storey office building suitable for Class MA conversion into eight flats. He needed £410,000 against a £650,000 purchase price (63% LTV) over a 12-month term, with the exit being a sale of four units and refinance of the remaining four onto buy-to-let mortgages. Prior approval was already submitted at the point of drawdown, and funds released in 16 working days once the legal charge was in place. Investors in the area often start by exploring bridging loans in Reading before approaching a lender.
The arrangement fee on that deal was 2%, with a monthly rate of 0.85%, retained rather than serviced, meaning the borrower didn't have to find monthly payments while the building sat empty during conversion. The lender took comfort from the fact that the applicant had converted two similar buildings in the previous three years, both exited via sale within the projected timeframe.
A developer client in Norwich bought a redundant agricultural barn with PD potential under Class Q. He borrowed £180,000 against a £310,000 market value (58% LTV) over 9 months, using developer finance to fund both the purchase and initial structural works, exiting via sale to an owner-occupier once the certificate of lawful use was confirmed. That one completed in 11 working days because the vendor had already commissioned a planning consultant's report, which the lender's surveyor could rely on. Deals like this are typical of bridging loans in Norwich, where agricultural conversions are common.
A third example worth mentioning, a broker colleague of ours placed a deal in Bristol on a former retail unit with residential above, where the ground floor was eligible for Class MA but the upper floor already had residential consent. The mixed-use nature of the building meant two lenders declined outright before a specialist bridging lender agreed £265,000 against a £420,000 value, recognising that the mixed-use history actually strengthened rather than weakened the case once the planning consultant's letter was in hand. Choosing the right funder matters here, and our review of the best bridging loan lenders in the UK covers how to compare them.
What lenders look for
Lenders want evidence that the PD route is genuinely available and that there's a credible, funded exit, not just a hopeful one.
Loan-to-value typically sits between 55% and 70% of current value for PD-eligible commercial buildings, occasionally stretching to 75% where the applicant has a strong track record and the uplift potential is well evidenced. Timescales from a clean enquiry to funds run from 10 to 20 working days, faster if title is unencumbered and a recent valuation exists.
Security needs to be a building that genuinely qualifies for the relevant PD class, so lenders will always ask for a planning consultant's opinion or, better, a submitted prior approval application. In our experience, the applications that sail through are the ones where the borrower has already had a pre-application conversation with the local planning authority and can produce written correspondence confirming no objection in principle.
The most common reason we see these declined is the building falling outside the strict definitions of the PD class, commonly older office stock with mixed retail on the ground floor, or a site that sits in an Article 4 direction area where the council has removed PD rights altogether. A second common decline reason is the applicant having no realistic exit lined up beyond a vague hope that the market will improve.
Experience matters too, though not as much as some brokers assume. First-time PD investors can and do get funded, provided the numbers stack up and there's a clear professional team around them, including a solicitor and planning consultant who've done this before. What lenders are far less forgiving about is a borrower who hasn't checked whether their building sits within an Article 4 area, since that single point can turn a straightforward deal into a dead one overnight.
Our advice to anyone considering this route is to get the planning question answered properly before approaching a lender, ideally with a written opinion from a planning consultant rather than a verbal assurance from the estate agent selling the building. It costs a few hundred pounds and it can be the difference between a bridging loan completing in two weeks or not completing at all. To explore your options in more detail, visit our funding solutions hub, or arrange bridging finance for permitted development today.
