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Commercial Buy to Let Mortgages | Why It Takes Longer Than Residential BTL

Last Updated: August 2026

Featured in The Telegraph • Daily Mail • The Times • Sky News

A commercial buy to let mortgage finances a wholly commercial property, a shop, an office, a warehouse, or a semi-commercial one with a flat above a business, bought to let to a tenant rather than to live in. Lenders assess it differently from a standard buy to let mortgage, and the process usually takes weeks rather than days.

Lenders typically want a 25% deposit or more, against a standard LTV range of 60% to 75%

Full completion usually takes four to eight weeks, against 24 to 48 hours for an agreement in principle

Rent or trading income normally needs to cover 120% to 150% of the mortgage payment, not your personal income

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As featured in…

Harry Goodliffe, director and FCA-authorised mortgage advisor at HTG Mortgages, at his desk

Meet your Advisor

Harry Goodliffe

  • FCA Authorised
  • Director & Mortgage Advisor

“I‘m not about confusing jargon or passing you from person to person. From our first chat to the day you get the keys, you’ll deal directly with me. I‘ll keep you updated, answer any burning questions, and do everything I can to make the whole process as stress-free as possible.”

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How I check a commercial buy to let case before it goes to a lender

1

Step 1

First Chat

Tell me the property type, whether it is wholly commercial or semi-commercial, who the tenant is or will be, and the rent the property achieves or is expected to achieve.

2

Step 2

Research

I check which lenders are comfortable with the tenant’s trade and the lease terms, run the rent through the lender’s cover test, and gather the rent schedule and tenancy agreement a commercial valuer will want to see.

3

Step 3

Application

If the numbers work, I handle the application and stay the point of contact with the lender and any solicitor involved.

4

Step 4

Completion

Your mortgage offer is issued and my flat £350 fee becomes payable. If no offer is issued, you owe me nothing.

About

Our approach to commercial buy to let

Most delays on a commercial case come from paperwork, not the property

Lenders on a commercial case typically want two to three years of trading accounts, two months of bank statements, a rent schedule, and the tenancy agreement or lease terms, before they will issue formal terms. If the property is vacant or only partly let, most will also want a letting agent’s opinion on achievable rent. None of this is optional paperwork. Missing any one piece is usually what turns a four-week case into an eight-week one. Not every specialist buy to let case is about a commercial tenant, some are about unit count instead, like a multi-unit freehold block.

Whole-of-Market Access

Whole-of-market comparison across 120+ lenders

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A flat £350 fee, payable only once your mortgage offer is issued

Honest Advice

If the right answer is to do nothing, I will say so

Outside My Scope

I do not offer equity release

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Not sure whether you even need to do anything? Call me on 01425 203055 or email info@htgmortgages.com. No charge for working out where you stand.

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How I help

I check three things: whether the tenant’s trade and lease length fit your target lender’s appetite, whether the rent or trading income clears the cover test the lender applies, typically 120% to 150% of the payment, and whether the documents a valuer will ask for are ready before the case is submitted, not chased afterwards.

Who this is for

Landlords and investors buying or refinancing a wholly commercial property, or a semi-commercial one such as a shop with a flat above, whether let to an existing tenant or bought with a tenant lined up. I cover this across Winchester and the rest of Hampshire, whether that is a purchase or a remortgage.

Related: Remortgage.

Why use HTG’s mortgage services?

Available 24/7, so we are always there to help when you need us

We are an independently owned, whole-of-market mortgage broker offering first-charge mortgages

We provide unrivalled customer service, ensuring that you get the care you deserve

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Frequently Asked Questions

Have another question?

It finances a wholly commercial property, such as a shop, office or warehouse, or a semi-commercial one such as a shop with a flat above, bought to let to a tenant rather than to occupy yourself, similar in principle to a residential buy to let purchase but assessed very differently by lenders.

A residential buy to let mortgage is assessed mainly on the rent a single dwelling achieves. A commercial case is assessed on the tenant’s trade, the lease terms, and the rent or trading income the property generates, and it usually needs several years of accounts and bank statements that a residential case does not.

Most lenders want at least 25%, with loan to value typically running from 60% to 75% of the property’s value. A small number will stretch further in strong cases, usually at a higher cost.

It covers a mixed-use property, most often a shop or business unit with a flat above, held under one title. Lenders treat it as commercial rather than residential, and the same documentation and cover test rules apply as any other commercial case.

Lenders test whether the rent, or trading income if the tenant is the owner’s own business, covers the mortgage payment by a set margin, usually 120% to 150%, calculated at a stress rate above the actual payment.

Typically two to three years of trading accounts, two months of bank statements, a rent schedule, and the tenancy agreement or lease terms. If the property is vacant or only partly let, a letting agent’s opinion on achievable rent is usually needed too.

An agreement in principle can come back in as little as 24 to 48 hours, but full completion usually takes four to eight weeks, longer than a standard residential buy to let case, because of the extra documentation and valuation work involved.

Yes, and most investors buying commercial property do. It is worth taking tax advice alongside the limited company mortgage advice, since the right structure depends on your wider circumstances, not just this one property.


Harry Goodliffe
Written by Harry Goodliffe
Director & Mortgage Adviser, HTG Mortgages  ·  FCA Authorised (1017945)
CeMAP Qualified  ·  Featured in National Press  ·  South England Prestige Awards 2026/27 winner

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