Commercial Mortgage Guides

Understand UK commercial mortgages before you commit to a property or refinance. Compare borrowing, deposits, lender tests, documents, valuation, legal security and repayment choices, then open the guide that matches your next decision.

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Start with the decision in front of you

Commercial mortgage guidance for every stage

A commercial mortgage is borrowing secured against property used for business or investment. The right route depends on the property, deposit or equity, affordability evidence, borrower, lease and intended use. Use this hub to understand the next decision, prepare a clearer case and find the guide that answers your question.

31 practical guidance routes
Buying and refinancing
Trading and investment property
Reviewed 16 August 2026

From initial facts to an existing loan

The commercial mortgage journey at a glance

You do not need every answer before speaking to an adviser. You do need a clear account of the property, transaction, money available and timescale. These five stages show where different questions usually arise.

1

Define the transaction

Set out whether you are buying or refinancing, the price or value, property use, loan required and deadline.

2

Test deposit and affordability

Consider cash or equity, rent or trading income, existing borrowing, likely costs and repayment pressure.

3

Prepare the evidence

Accounts, bank statements, tax records, leases, property details and a business plan may be relevant to the case.

4

Complete due diligence

Valuation, title, searches, legal security, lender conditions and insurance can all affect completion.

5

Manage the mortgage

Keep track of repayments, covenants, consent requirements, refinance options and the maturity date.

Choose the route that fits the property

What are you trying to do?

The same property can be assessed differently depending on who will occupy it, how income is generated and whether the borrowing is for a purchase or an existing loan.

Buy premises for your business

Start with the trading business, property use, deposit, accounts and how the proposed repayments would be supported.

Owner-occupied commercial mortgages

Buy a commercial investment

Consider the lease, tenant, rental income, property type, deposit and how the investment would perform if circumstances changed.

Commercial buy-to-let mortgages

Refinance an existing property

Identify the current balance, repayment terms, property value, reason for refinancing, deadline and any lender or maturity pressure.

Commercial remortgaging

Find the answer you need

Explore the commercial mortgage guide map

Choose the question closest to your situation. Each link opens a focused guide so you can keep this decision map available while you read.

1

Borrowing, deposits and monthly cost

Use these guides when you are testing whether the numbers may work before making an offer or approaching a lender.

2

Eligibility, ownership and difficult histories

Start here when the borrower, business history, credit record or ownership structure needs closer explanation.

3

Application, valuation and route selection

Use these guides to prepare evidence, understand the process and compare a property-backed loan with other routes.

4

Offer, legal security and an existing mortgage

These guides cover the work between offer and completion and the decisions that arise while a commercial mortgage is running.

Navigation reviewed: 16 August 2026. These links cover 31 distinct commercial mortgage questions. Lender criteria, legal requirements, property suitability and individual outcomes remain case-specific.

Straight answers before you enquire

Commercial mortgage questions

These concise answers explain the common starting points. The linked guides above provide the detail needed for each decision.

What is a commercial mortgage?

A commercial mortgage is a loan secured against property used wholly or partly for business or investment purposes. The lender assesses the property, borrower, purpose and proposed repayment route rather than relying on a standard residential affordability model.

How much deposit is needed for a commercial mortgage?

There is no single deposit percentage for every case. The amount depends on the property, business or rental evidence, borrower experience, credit profile and lender appetite, with fees and taxes normally funded separately.

How much can you borrow on a commercial mortgage?

Borrowing may be limited by both the lender's loan-to-value ceiling and the income available to support repayments. Trading profit, rent, existing debt, property condition, lease terms and the proposed mortgage term can all affect the result.

What documents might a commercial mortgage lender request?

A lender may request accounts, bank statements, tax documents, identification, proof of deposit, property details, leases, tenancy information and a business plan or forecast. The exact evidence depends on the borrower and transaction.

How long does a commercial mortgage take?

Timing varies with the application, valuation, legal work, searches, lender conditions and responsiveness of everyone involved. A property or title issue, incomplete evidence or a short deadline can materially change the timetable.

Can a broker guarantee a commercial mortgage offer?

No. A broker can help assess the facts, identify suitable routes and present the case, but the lender decides whether to issue an offer and may apply conditions after underwriting, valuation and legal review.

Prepare a useful first conversation

Tell us what the property finance needs to achieve

A concise first enquiry helps an adviser understand the route and identify obvious evidence gaps. Do not send passwords or original identity documents through an initial enquiry form.

  • Property address and intended use
  • Purchase price or current value
  • Loan required and deposit or equity
  • Purchase, refinance or capital raising
  • Trading income or rental evidence
  • Deadline and any current lender pressure

New and recently reviewed

Latest commercial mortgage guides

The newest articles appear below. Use the decision map above when you need a particular answer rather than the most recent publication.

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