--- title: "Mansion Mortgages" id: "14859" type: "post" slug: "mansion-mortgages" published_at: "2026-08-14T15:01:29+00:00" modified_at: "2026-08-14T15:01:29+00:00" url: "https://mortgagelane.com/mansion-mortgages/" markdown_url: "https://mortgagelane.com/mansion-mortgages.md" taxonomy_category: - "Uncategorized" --- # Mansion Mortgages [Contact us](https://mortgagelane.com/contact/) [Free Quote](https://mortgagelane.com/contact/) - ### Whole-of-market access, including private banks and specialist lenders - ### FCA-regulated broker - ### Structuring for complex incomes, large loans and unusual properties Back to Top## Skip to - [What is a mansion mortgage?](#WHAT) - [Mansion mortgage rates](#RATES) - [Lending criteria](#CRITERIA) - [Types of mansion mortgages](#TYPES) - [How the process works](#HOW) - [How lenders value mansions](#LENDERS) - [FAQS](#FAQS) ## ## What is a mansion mortgage? A mansion mortgage is a mortgage used to buy, refinance or build a very large, high-value residential property in the United Kingdom. Because mansions typically involve large loan sizes, non-standard construction or unique features, mansion mortgages are often arranged through specialist lenders or private banks rather than standard high-street products. Lenders assess the property’s value, the borrower’s income and assets, and the intended use of the home before agreeing terms. ## Let to Buy Mortgage Rates - Purchase (New Home) August 2026 | LTV | 75% LTV | | --- | --- | | Product Fee | £999 Flat Product Fee | | Rate | 3.85% | | Fixed Term | 5 years | ## Speak to a mansion mortgage specialist [Contact us](https://mortgagelane.com/contact/) [Free quote](https://mortgagelane.com/contact/) ![/var/www/mortgagelane.com//wp-content/uploads/tma-logo-new-scaled.webp](https://mortgagelane.com/wp-content/uploads/tma-logo-new-scaled.png) ![/var/www/mortgagelane.com//wp-content/uploads/NACFB_Logo_with_strapline_Inverse_RGB.webp](https://mortgagelane.com/wp-content/uploads/NACFB_Logo_with_strapline_Inverse_RGB.png) #### ## Mansion Mortgage Criteria Criteria Individuals, joint borrowers, expats, foreign nationals, trusts and limited companies Borrower types Detached high-value homes, country houses, listed buildings, new builds, self-build projects Property types Minimum loan size £50,000 Maximum loan size No maximum Maximum loan to value (LTV) Up to 90% Loan to Val Repayment types Capital repayment, interest-only, part-and-part Term Up to 45 years Income assessment Employed, self-employed, dividend, bonus, investment and foreign income considered Valuation method Royal Institution of Chartered Surveyors (RICS) valuation; specialist valuers for unique properties Deposit sources Savings, Gift, Crypto Deposits [Get in touch >](https://www.mortgagelane.com/contact/) ## ## Types of mansion mortgages Mansion mortgages are not a single product. The right structure depends on whether you are purchasing a completed home, refinancing an existing one, or funding a build. The main variations we arrange are set out below. Mortgages to buy a mansion A mortgage to buy a mansion is a purchase loan secured against a completed high-value home. Lenders will look closely at the property itself as well as the borrower: unique architecture, extensive grounds, annexes or agricultural ties can all affect which lenders are willing to offer terms. Because loan sizes are typically large, affordability is assessed in detail. Some lenders apply standard income multiples, while private banks may take a broader view of wealth, including investments, business interests and existing property. Presentation matters. Packaging complex income correctly – for example, retained company profits or irregular bonuses – can materially change the loan size available. [Get in touch to discuss a mansion purchase](https://mortgagelane.com/contact/) Remortgaging a mansion Remortgaging a mansion means replacing the existing mortgage on a high-value home with a new one, either with the current lender or a new lender. Common reasons include securing a better rate at the end of a fixed period, raising capital for renovation or investment, or restructuring from interest-only to repayment. Valuation is often the key variable. Unique properties can be difficult to benchmark against comparable sales, so choosing a lender whose valuers understand the market segment is important. [Get in touch to discuss remortgaging a high-value property](https://mortgagelane.com/contact/) Mortgage to build a mansion (self-build) A mortgage to build a mansion is a self-build mortgage that releases funds in stages as construction progresses, rather than as a single advance. Typical stages run from land purchase through foundations, wall plate, wind-and-watertight, first fix and completion, with the lender inspecting or revaluing at each stage. Self-build lending on a high-value project requires detailed plans, costings, planning permission and usually an experienced professional team. Lenders will want confidence that the completed property will be readily mortgageable and saleable. On completion, many borrowers refinance the self-build facility onto a standard residential or private bank mortgage at a lower rate. [Get in touch to discuss funding a mansion build](https://mortgagelane.com/contact/) High-net-worth and private bank mortgages High-net-worth mortgage lending is designed for borrowers whose wealth or income does not fit standard affordability models. Private banks can lend against a wider picture – investment portfolios, business equity or international assets – and may offer bespoke terms on large loans. High-net-worth mortgage lending is designed for borrowers whose wealth or income does not fit standard affordability models. Private banks can lend against a wider picture – investment portfolios, business equity or international assets – and may offer bespoke terms on large loans. Qualifying borrowers may also fall within the Financial Conduct Authority (FCA) high-net-worth exemption, which allows more flexible underwriting where the borrower meets defined income or asset thresholds. Some private banks expect a wider relationship, such as assets under management, as a condition of lending. [Get in touch to discuss high-net-worth lending options](https://mortgagelane.com/contact/) ## ## How the mansion mortgage process works 1. **Enquiry and fact find.** We take details of the property, your income, assets and objectives, and identify the lender types most likely to offer competitive terms 2. **Decision in principle**. We package your case and obtain an agreement in principle from the chosen lender, giving you a credible position to negotiate or bid 3. **Full application and valuation.** The lender underwrites the case in full and instructs a valuation appropriate to the property, often a specialist RICS valuer for unique homes. 4. **Offer and completion.** Once the mortgage offer is issued, solicitors complete the legal work and funds are released — in stages for self-build projects, or in full on purchase or remortgage [Get in touch >](https://www.mortgagelane.com/contact/) MANSION MORTGAGE - ![Image](https://mortgagelane.com/wp-content/uploads/JOE.jpg) ### Joseph Lane Founder [Call](tel:07487829005) [Email](/cdn-cgi/l/email-protection#e18b8e84a18c8e9395868086848d808f84cf828e8c) ## Speak to an export mortgage advisor from Mortgage Lane - Finance in the Fast Lane Our expert award winning advisors are on hand to help guide you through the mortgage and finance process and find the best deal for you [Contact us](https://mortgagelane.com/contact/) ## ## How lenders value mansions Valuation is usually the most technical part of a mansion mortgage, because high-value homes rarely have close comparable sales. **Comparable evidence.** Standard mortgage valuations rely on recent sales of similar nearby properties. Mansions often have few or no true comparables, so valuers must widen the search area, adjust for unique features, and apply professional judgement. This can produce a wider gap between asking price and mortgage valuation than on a standard home. **Specialist valuers.** Lenders active in the high-value market typically instruct valuers with specific experience of country houses, listed buildings and prime property. Using a lender whose panel includes these valuers reduces the risk of a down valuation. **Non-standard features.** Listed status, thatched roofs, extensive outbuildings, land over a typical residential plot, annexes, equestrian facilities and agricultural occupancy conditions can each narrow the lender pool or affect the valuation basis. **Reinstatement and insurance.** Valuers also assess rebuild cost for buildings insurance. On period or listed mansions, reinstatement value can exceed market value, which affects insurance requirements rather than the loan itself. **What this means for borrowers.** Choosing the lender before the valuation – based on how its valuers treat the specific property type — is one of the most valuable things a whole-of-market broker does on a mansion mortgage. ## ## Mansion mortgage FAQs What is a mansion mortgage? A mansion mortgage is a mortgage used to buy, refinance or build a large, high-value residential property in the United Kingdom. Mansion mortgages often involve large loan sizes and non-standard properties, so they are frequently arranged through specialist lenders or private banks rather than standard high-street mortgage products. [Get in touch](https://mortgagelane.com/contact/) Can I get a mortgage to build a mansion? Yes, a mortgage to build a mansion is arranged as a self-build mortgage. Self-build mortgages release funds in stages as construction progresses, and lenders require planning permission, detailed costings and a credible professional team before agreeing to lend on a high-value build. [Get in touch](https://mortgagelane.com/contact/) How much deposit do I need for a mansion mortgage? The deposit required for a mansion mortgage depends on the lender’s maximum loan to value (LTV) for high-value properties. Lenders commonly apply lower maximum LTVs as loan sizes increase, so larger deposits are typical on mansion purchases. [Get in touch](https://mortgagelane.com/contact/) Do private banks offer mansion mortgages? Yes, private banks are active lenders on mansion mortgages, particularly for loans above high-street limits or for borrowers with complex wealth. Private banks can consider investment portfolios, business assets and international income, and some may ask for a wider banking or investment relationship as part of the lending arrangement. [Get in touch](https://mortgagelane.com/contact/) What is the high-net-worth mortgage exemption? The high-net-worth mortgage exemption is a Financial Conduct Authority (FCA) rule that allows lenders to apply more flexible underwriting for borrowers who meet defined income or asset thresholds. It enables private banks and specialist lenders to lend against overall wealth rather than standard affordability calculations. [Get in touch](https://mortgagelane.com/contact/) Can I get a mortgage to buy a mansion? Yes, you can get a mortgage to buy a mansion if the lender is satisfied with the property valuation and your ability to afford the loan. High-street lenders, specialist lenders and private banks all operate in this market, and the right choice depends on loan size, income type and the property itself. [Get in touch](https://mortgagelane.com/contact/) Are mansion mortgages different from standard mortgages? Mansion mortgages follow the same legal structure as standard residential mortgages but differ in underwriting. Larger loan sizes, unique properties and complex incomes mean lenders assess mansion mortgages manually, valuations are more specialist, and terms are often negotiated case by case rather than taken from a standard product range. [Get in touch](https://mortgagelane.com/contact/) Which lenders offer mansion mortgages? Mansion mortgages are offered by some high-street banks, specialist lenders and private banks. High-street lenders may cap maximum loan sizes, while private banks specialise in large and complex loans. A whole-of-market broker can compare all three lender types to find suitable terms. [Get in touch](https://mortgagelane.com/contact/) Can I get an interest-only mansion mortgage? Interest-only mansion mortgages are available where the lender accepts a credible repayment strategy, such as the sale of the property, investments or other assets. High-value lending is one of the areas where interest-only remains common, because borrowers often hold significant assets outside the mortgaged property. [Get in touch](https://mortgagelane.com/contact/) Can foreign nationals get a mansion mortgage in the UK? Yes, foreign nationals can get a mansion mortgage in the United Kingdom, although the lender pool is smaller. Lenders will consider visa or residency status, the currency of income, and the source of the deposit. Private banks are often well suited to international buyers of high-value UK property. [Get in touch](https://mortgagelane.com/contact/) [Get in touch >](https://www.mortgagelane.com/contact/) ### Begin your Mansion Mortgage journey with us today Tell us about your enquiry and we'll be in touch! - Mon - Fri 9am to 6pm - Closed Sat & Sun Call us for an appointment or fill in the contact form on this page [Call here](tel:03332318206) [Email here](/cdn-cgi/l/email-protection#9ffaf1eeeaf6edf6faecdff2f0edebf8fef8faf3fef1fab1fcf0f2) ### Contact us "*" indicates required fields [All articles](https://www.mortgagelane.com/blog/) ## Read more articles - [14th August 2026 Guernsey Mortgages READ MORE](https://mortgagelane.com/guernsey-mortgages/) - [14th August 2026 Mortgages for Nigerian Nationals READ MORE](https://mortgagelane.com/mortgages-for-nigerian-nationals/) - [4th August 2026 Million Pound Mortgages READ MORE](https://mortgagelane.com/million-pound-mortgages/)