Development finance is a purpose-built product for people who are building, converting or significantly refurbishing property. It is not a bridging loan, it is not a buy-to-let mortgage, and it does not work like either of them.
Understanding how it works, what lenders assess, and how to structure the finance correctly is one of the most important things a developer can do before they start a project. Getting it wrong at the beginning is significantly more costly than getting it right.
What development finance is and who it is for
Development finance is a loan used to fund the construction or significant conversion of property. It is used by developers building new homes from the ground up, by investors converting commercial buildings to residential use, by developers undertaking large-scale refurbishments, and by anyone else whose project requires a lender who understands the build process rather than just the end product.
It is typically available for residential development, commercial development, and mixed-use projects. The minimum loan size varies between lenders, but most specialist development finance lenders start at around £500,000 to £1 million for ground-up residential schemes.
How the loan is structured
Development finance is not released as a single lump sum. It is drawn down in stages as the build progresses, with each drawdown triggered by the completion of a specific milestone.
The loan typically has two components. The first is the initial advance, which covers the purchase of the land or property and is released at the outset. The second is the build facility, which is drawn down in tranches as construction progresses. Each tranche is released after a monitoring surveyor visits the site, confirms that the works have reached the required stage, and certifies the drawdown.
The phased drawdown structure means that interest only accrues on the funds that have been drawn, not on the total facility. This reduces the interest cost during the build period compared to drawing the full amount at the start.
GDV: the number that matters most
GDV stands for Gross Development Value. It is the estimated market value of the completed development, either as individual units for sale or as a single asset for investment purposes.
GDV is the number that most lenders use to determine how much they will lend. Rather than lending a percentage of the land value or the build cost, lenders typically lend a percentage of GDV. This means that the higher the projected end value of the development, the more you can borrow.
The GDV is typically assessed by an independent valuer appointed by the lender. The lender will not rely on the developer's own estimate. The valuer will look at comparable sales in the area, the quality of the proposed scheme, and the market conditions at the time.
Understanding your GDV before you approach a lender gives you a realistic picture of what you can borrow and whether the project stacks up financially.
What lenders look at
Planning permission
Most lenders require planning permission to be in place before they will lend. Some will consider applications in permitted development scenarios where no formal planning is required, and a small number will consider pre-planning deals where the developer has a strong track record. For most first-time and smaller developers, having full planning permission in place before approaching a lender is the cleaner and faster route.
Developer experience
Lenders take a significant interest in the experience of the developer. For larger or more complex schemes, most lenders want to see evidence of previous successful development projects. For smaller or simpler projects, some lenders will consider first-time developers where the professional team around them is strong.
If you are approaching development finance for the first time, having an experienced project manager, architect, and contractor in place can support the application considerably.
Build cost schedule
Lenders want to see a detailed schedule of the build costs. This is typically provided by a quantity surveyor and breaks down the costs of each stage of the build. The monitoring surveyor appointed by the lender will use this schedule to assess whether each drawdown request is appropriate.
Lenders are particularly focused on whether the build costs are realistic and whether there is adequate contingency built in. Under-costed schedules are one of the most common reasons development projects run into financial difficulty.
Exit strategy
As with bridging finance, the exit strategy is central to the lender's assessment. For a residential development, the exit is typically the sale of the completed units or, for an investor, refinancing to a long-term buy-to-let mortgage. Lenders will want to understand how realistic the exit is, how long it will take, and what happens if the exit is delayed.
First-time developers vs experienced developers
The lender landscape looks different depending on your level of experience. Experienced developers with a track record of successful schemes have access to a wider range of lenders and typically on better terms. Lenders are more willing to lend at higher percentages of GDV to developers they have worked with before or who can demonstrate a strong track record.
First-time developers are not excluded from the market, but the options are narrower. Lenders will look more carefully at the professional team around the developer, the scale and complexity of the project, and the clarity of the exit strategy. Smaller, lower-risk schemes are more accessible for developers without a track record.
The exit: sale vs refinance
Once a development is complete, the developer typically has two main options. They can sell the units, repaying the development loan from the proceeds and capturing the profit. Or they can refinance the completed units onto long-term buy-to-let mortgages, retaining the properties as an income-producing investment.
The choice between these exits affects how the development finance is structured. A lender will assess the viability of either exit and may offer different terms depending on which route is planned. For a developer who plans to refinance rather than sell, the lender will want to understand whether the completed units will meet the criteria for a long-term mortgage at the projected values.
It is worth checking the exit mortgage criteria before you commit to the development finance. We always look at the end game before helping a client secure initial funding.
Frequently asked questions
How much can I borrow for development finance?
This depends on the GDV, the developer's experience, and the lender's criteria. Most lenders will advance up to 60% to 70% of GDV for residential development, with the total loan including land and build costs. The specific figure available to you depends on your individual situation.
Do I need planning permission before applying?
Most lenders require full planning permission to be in place. Some will consider permitted development scenarios or, in rare cases, pre-planning deals with experienced developers. For most applicants, having planning permission secured before approaching a lender is the right approach.
Can a first-time developer get development finance?
Yes, in the right circumstances. Smaller, lower-complexity projects with strong professional teams around them are more accessible for first-time developers. The key is being able to demonstrate that the project is manageable and that the team around you has the experience the developer lacks.
What is a monitoring surveyor?
A monitoring surveyor is an independent professional appointed by the lender to inspect the site at each stage of the build and certify that the works have reached the required milestone before each drawdown is released. Their fees are typically paid by the borrower and are an ongoing cost throughout the project.
What is the difference between development finance and bridging finance?
Bridging finance is typically used for shorter-term situations: buying a property quickly, chain breaks, or short renovation projects. Development finance is a specialist product designed for the construction or major conversion of property, with a phased drawdown structure tied to build milestones. The two are sometimes used in combination, with a bridge securing the land or property while development finance is arranged.
Last updated: 10 May 2026