When you are applying for commercial development finance, the deal will be individually priced so there are basically no set rates. The lenders from various development finance UK will look at what you propose to do, assess the property and the appropriate works to be done, and suggest a bespoke price accordingly. Rates for commercial development finance from various lenders differ depending on the applicant's experience. It depends on the type of property and the nature of the proposal too. But a good benchmark would be Bank Base Rate ranging from 1. 5% to 2. 5%. Commercial financing is usually arranged on an interest only basis and loan term can be more than a yr depending on the size and nature of the underlying project. Finance to project costs will be greatly influenced by projected gross development values but commercial development finance would typically be at seventy to seventy five percent of the property purchase price and build costs. It is possible to get a loan for 100% development finance where the borrower already owns the land on an unencumbered basis or for experienced developers with a strong track record. With such experience, they would be able to detect and support the value of developed property. In short you will be borrowing against the end value of the property rather than its current value. There are also other arrangements in getting 100% development finance but what is needed is a strong potential of returns. The said high geared finance can be supported by mezzanine funding, equity or senior debt and each funding has certain appropriation on the project and capability of the developer.