Development Finance Calculator

How to Use Our Development Finance Calculator

Our development finance calculator is designed to give property developers in Enfield and across the UK an instant, accurate estimate of their project's financial viability. Whether you are planning a ground-up new build, a conversion project, or a heavy refurbishment, understanding your finance costs upfront is critical to making informed investment decisions.

Understanding the Key Inputs

Purchase Price refers to the acquisition cost of the land or property you intend to develop. This is one of the two main components of your total project cost, and lenders will assess this carefully when determining your maximum loan amount. For sites in Enfield, current land values vary significantly depending on the specific location, planning status, and existing use of the property.

Build Costs encompass all construction expenditure, including materials, labour, project management, and any professional fees directly related to the physical build. Lenders typically require a detailed cost schedule and will release build cost funding in stages (known as drawdowns) as the project progresses. Typical build costs in the Enfield area range from approximately £120 to £200 per square foot, depending on specification and project complexity.

Gross Development Value (GDV) is the estimated total market value of the completed development when all units are sold. This is perhaps the most important figure in any development appraisal, as it determines the overall profitability of the project. GDV should be supported by comparable evidence from recent sales in the local area. In Enfield, GDV figures are influenced by proximity to transport links, local amenities, and the quality of the finished product.

Loan to Cost (LTC) and Loan to GDV

Development finance lenders use two primary metrics to determine the maximum loan they will provide. Loan to Cost (LTC) represents the percentage of total project costs (purchase price plus build costs) that the lender is willing to fund. Most lenders offer between 60% and 75% LTC, with higher percentages available for experienced developers or projects with strong fundamentals. Our calculator defaults to 65% LTC, which represents a common starting point for most development projects.

Loan to GDV caps the total facility at a percentage of the completed development value. This is typically set between 55% and 65%, ensuring the lender maintains a comfortable margin of security. The calculator will automatically apply the lower of the two calculations, reflecting how lenders assess risk in practice.

Interest Rates and Finance Costs

Development finance interest is typically quoted as a monthly rate rather than an annual rate. Current market rates start from around 0.65% per month for the most competitive deals, though rates depend on the borrower's experience, the loan-to-value ratio, project location, and the overall strength of the development appraisal. Our calculator defaults to 0.75% per month, which represents a realistic mid-market rate for many Enfield projects.

The arrangement fee is a one-off cost charged by the lender for setting up the facility. This is typically between 1.5% and 2.5% of the gross loan amount and is usually added to the loan rather than paid upfront. Some lenders also charge valuation fees, monitoring fees, and exit fees, though these are not included in this simplified calculator.

Interpreting the Results

The Maximum Loan figure shows the total development finance facility available based on your inputs. The Equity Required is the cash deposit or contribution you need to provide from your own funds or from other sources such as mezzanine finance or joint venture partners. Understanding your equity requirement early in the planning process ensures you can structure the right funding package before committing to a purchase.

Projected Gross Profit provides an estimate of the surplus remaining after deducting all development costs and finance costs from the GDV. The ROI on Equity shows the percentage return on your personal cash investment, while Profit on Cost measures profitability relative to total project expenditure. Most experienced developers target a minimum profit on cost of 20% to justify the risk and effort involved in a development project.

Why Choose Enfield Development Finance?

As specialist development finance brokers with deep expertise in the Enfield and North London market, we provide access to over 100 lenders, including high street banks, challenger banks, and specialist development finance providers. Our team understands the local planning environment, property values, and construction costs specific to the EN1 through EN9 postcode areas. We work closely with developers at every stage, from initial appraisal through to loan drawdown and exit.

This calculator provides indicative figures based on simplified assumptions. For a detailed, personalised development appraisal based on your specific project, contact our team for a free, no-obligation consultation. We typically provide indicative terms within 24 hours and can secure formal offers within 5 to 10 working days.