It really depends. Mortgage lenders might define a luxury property in different ways, although will generally refer to a home as higher-end if it costs over £500,000.

That might include castles, high-value cottages, farmhouses, stately homes, listed buildings or townhouses in prestigious locations.

The location makes a big difference, as the same budget that might buy a flat in London might buy a substantial family home elsewhere.

Typically, if you have the finances to prove affordability, and have a decent deposit, it isn't complicated to find competitive lending. However, if the property is non-standard or you require a substantial mortgage value, it might be a little trickier.

• Mansion mortgages - the key is to prove affordability and to meet the lender's eligibility criteria as closely as possible.
• Stately home mortgages include properties built for the aristocracy. Typically, this type of home will be listed and non-standard construction, so specialist lending is almost always required.
• High net worth mortgages offer better rates, more flexible terms, and higher value mortgages than you will find on the high street or through a regular bank. This type of mortgage is essential for substantial mortgage values.

Self-build mortgages can be complex, and in many cases, a bridging finance loan is the fastest option available. However, the interest costs and length of borrowing are a crucial consideration.

Options include:

• Self-build mortgages - although lending is often capped and may not be sufficient to cover the whole of the build. Usually, you will draw down funds in tranches and pay higher interest than a residential mortgage.
• Bridging loans are usually more flexible, and faster to secure, and could be an alternative if you do not qualify for a self-build mortgage.