
Commercial investment mortgages for let business property
A commercial investment mortgage is long-term borrowing secured on a building let to business tenants and repaid from the rent…
Commercial mortgage deposits explained: typical ranges for owner-occupied, investment and specialist property, extra security, SDLT, VAT and funding sources.
This guide is for business owners and property investors planning to buy commercial or mixed-use property with a mortgage, who need to know how much cash to put in. Most commercial mortgages need a deposit of around 25 to 40% of the purchase price, compared with 5 to 10% for many residential home loans. The exact figure depends on whether you will occupy or let the building, what kind of property it is, the strength of the business or tenant, and whether you can offer other security. Smart Funding Solutions is a broker, not a lender: we search a panel of 300+ lenders, including banks and specialist commercial lenders, to find the structure that needs the least cash for your circumstances.
A home is a highly standardised asset with a deep market of buyers and decades of price data. Commercial property is not. A lender looking at a workshop, a parade of shops or a hotel faces three extra risks:
The deposit is the lender's cushion against all three. That is why loan-to-value (LTV) limits are lower, and why the deposit you need varies so much between properties.
These are typical market ranges, not fixed rules. Each lender sets its own maximum LTV, and the offer also depends on affordability.
| Purchase type | Typical deposit | Why |
|---|---|---|
| Owner-occupied premises, mainstream use | Often around 25 to 30% | Lender relies on the trading business, which has a strong reason to keep paying |
| Semi-commercial (shop with flat above) | Often around 25 to 35% | The residential element widens the buyer pool |
| Commercial investment, let to a tenant | Often around 30 to 40% | Income depends on the tenant and the lease |
| Specialist trading property (pubs, hotels, care homes) | Often 30 to 40% or more | Value is tied to the business trading inside it |
| Vacant, secondary or unusual buildings | Higher, and sometimes bridging finance first | No income and a narrow resale market |
To see the monthly cost at different deposit levels, try our commercial mortgage calculator. The main commercial mortgages page explains how lenders run the loan-to-value and affordability tests side by side.
When the business that will occupy the building is also the borrower, the lender looks mainly at that business's trading record. Two or three years of accounts showing profits that comfortably cover the repayments, alongside existing debt, usually earns the best LTV. A business that has been paying rent can often show that ownership costs are similar, which helps. Our guide to buying business premises covers the owner-occupier process in full, including buying the building you already rent.
For an investment purchase, the lender looks at the rent, the tenant's covenant strength and the remaining lease term. It usually tests whether the rent covers the interest at a stressed rate with a margin to spare. A long lease to a strong tenant supports a larger loan; a short lease, a weak tenant or a vacant unit means a larger deposit. Our page on commercial investment mortgages explains this in detail, and semi-commercial mortgages covers mixed-use buildings.
If you own other property with equity in it, some lenders will take a charge over that property as well as the one you are buying. This additional security can reduce the cash deposit sharply, and in some cases allow close to the full purchase price to be borrowed, provided the combined borrowing is affordable. The trade-off is clear: if the business cannot pay, the other property is at risk too, and that may include your home if you offer it. Take independent legal advice before charging a residential property.
Alternatively, you can raise the deposit separately with a secured business loan against other property. The purchase lender will include that borrowing in its affordability test, so it must be disclosed.
The deposit is not the only cash you need on completion. Budget for:
A company agrees to buy a warehouse for £500,000 to occupy itself. A lender offers 70% LTV, so the loan is £350,000 and the deposit £150,000. Add SDLT at the non-residential rates, legal fees for both sides, the valuation and an arrangement fee, and the company may need well over £170,000 in cash. If the seller has opted to tax and the purchase is not a going concern, VAT of £100,000 is also payable at completion, even if reclaimed later. These figures are round and illustrative only.
Lenders verify where the deposit comes from as part of anti-money laundering checks, so keep a clear paper trail. If you are buying a trading business together with its property, the contribution works differently; see our guide on the deposit to buy a business.
Putting in more than the minimum lowers the lender's risk, and lower loan-to-value bands often attract better pricing and a wider choice of lenders. It also leaves more equity in the building if values fall. Against that, cash tied up in bricks is cash not available for stock, staff or a slow month. For a trading business, keeping a healthy working capital buffer is often worth more than a slightly lower rate, so weigh the two before emptying the bank account for the deposit.
This guide is general information, not financial advice. Lenders set their own criteria, rates and terms, and all finance is subject to status.
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For mainstream owner-occupied premises, deposits are often around 25 to 30% of the price. Investment and specialist property usually need more. Some lenders accept a smaller cash deposit if you offer additional security over other property, as long as the borrowing is affordable.
Not against the purchased property alone. Borrowing close to the full price is sometimes possible by offering additional security, such as a charge over another property you own, which puts that property at risk if repayments are missed.
Not necessarily. Deposits depend mainly on the property, its use and the strength of the business or tenant. A newly formed SPV with no history will be assessed on its directors, the rent and any guarantees, and lenders usually ask for personal guarantees from the directors.
A SSAS or SIPP can buy commercial property directly, alone or jointly with your business, and lease it back to the business. Pension money cannot simply be lent to you personally for a deposit. Take advice from your pension administrator and financial adviser.
Usually, yes. These are valued as trading businesses, so the property's value depends on the trade carried on inside it. Lenders tend to offer lower loan-to-value and look closely at the operator's experience and trading accounts.

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A short conversation is often enough to know which lenders will look at your case and how to present it. There is no obligation, and it is free to enquire.