Residential Mortgage Market Guide: Residential mortgage advice in 2025 required more than finding a competitive product.

Borrowers were balancing affordability, deposit levels, monthly payment certainty and changing lender criteria. Advisers therefore needed to interpret the market before recommending a route.

For Appointed Representatives, this created an important principle. Technology can identify products, but good advice depends on understanding the person, property and evidence behind the search.

At a Glance

• UK Finance forecast £148 billion of house-purchase lending during 2025.
• External remortgage lending was forecast to increase by 30%.
• Affordability, income evidence and deposit size remained central to lender decisions.
• Advisers needed to compare remortgages, product transfers and future payment risks.
• Network support could help AR firms manage criteria, compliance and complex cases.

What Was Happening in the 2025 Residential Mortgage Market?

The residential market entered 2025 with signs of measured recovery.

UK Finance forecast total gross mortgage lending of £260 billion for the year. House-purchase lending was expected to reach £148 billion, up 10% from 2024.

External remortgage lending was forecast to rise from £59 billion to £76 billion. Product transfer activity was also expected to increase as more fixed-rate deals approached maturity.

These figures did not mean every borrower would find lending easier. Affordability remained dependent on income, expenditure, credit commitments, deposit size and lender-specific calculations.

Read the supporting UK Finance mortgage market forecast.

What Is a Residential Mortgage?

A residential mortgage is secured against a property that the borrower intends to occupy as their main home.

It may be used by:

• First-time buyers
• Home movers
• Existing owners remortgaging
• Borrowers completing a product transfer
• Homeowners raising additional funds

This differs from buy-to-let lending, where the property is normally purchased or retained for rental purposes.

The distinction matters because residential and buy-to-let lenders use different affordability methods, occupancy rules and product criteria.

What Did Borrowers Need from Advisers?

Borrowers rarely approached residential mortgage advice with only one question.

They often needed to understand:

• How much they could reasonably borrow
• Whether their deposit met lender requirements
• How lenders would assess their income
• Whether a fixed or variable rate matched their plans
• How monthly payments could change
• Whether to remortgage or remain with their existing lender
• Which documents were required
• Whether the property met lender criteria

Google and AI tools could provide general information. However, they could not establish whether a specific lender would accept the complete circumstances of an individual case.

An adviser’s role was to convert information into a suitable and properly evidenced recommendation.

How Did Lenders Assess Residential Cases?

Income and employment

Lenders considered the amount, source and reliability of income.

Employed applicants commonly supplied payslips, bank statements and a P60. Self-employed applicants could be assessed using accounts, tax calculations, salary, dividends or retained profit.

Contractors, company directors and applicants with multiple income sources often required more detailed research.

Affordability and commitments

Affordability was not based on income alone.

Lenders could consider:

• Loans and credit card balances
• Childcare and maintenance payments
• Dependants
• Regular household spending
• Mortgage term
• Expected retirement age
• Potential future payment increases

An applicant could meet one lender’s calculation but fall outside another lender’s model.

Deposit and loan-to-value

Loan-to-value measures the mortgage balance against the property value.

A lower LTV could widen product choice. However, higher-LTV lending remained important for borrowers with smaller deposits, particularly first-time buyers.

Advisers needed to confirm the source of each deposit. Gifted deposits, family support and property equity could require additional evidence.

Credit history

A credit issue did not automatically prevent an application.

The lender could consider:

• The type of credit problem
• Its value
• When it occurred
• Whether it was satisfied
• The reason behind it
• The applicant’s conduct since the event

Submitting an application before checking these details could lead to unnecessary searches or a decline.

Property suitability

The borrower was only one part of the assessment.

Lenders also considered whether the property provided suitable security. Flats, short leases, non-standard construction, high-rise buildings and properties requiring major works could need specialist checks.

Purchase, Remortgage or Product Transfer?

Residential advice in 2025 involved several different client journeys.

Purchase

First-time buyers and home movers needed affordability, deposit and property checks before submitting a full application.

Remortgage

A remortgage involved moving the borrowing to another lender. This could provide different products or borrowing options, but it normally required underwriting, valuation and legal work.

Product transfer

A product transfer allowed the borrower to select another deal with their existing lender.

It could involve fewer checks than a remortgage. However, remaining with the current lender did not automatically make it the most suitable route.

Advisers needed to compare cost, flexibility, fees, early repayment charges and the borrower’s future plans.

Practical Residential Case Preparation

Before researching lenders, advisers should confirm:

• The client’s objective
• Required loan amount
• Property value and type
• Available deposit or equity
• Employment and income structure
• Credit commitments
• Credit history
• Preferred mortgage term
• Expected changes in circumstances
• Required completion date
• Supporting documents

Clear preparation could reduce avoidable delays and prevent the adviser from researching products that did not fit the full case.

Why Network Support Matters

Residential cases can move outside standard criteria quickly.

A straightforward enquiry may involve self-employed income, historic credit problems, an unusual property or additional borrowing. Advisers therefore need more than access to a sourcing system.

Connect Network supports AR firms through lender access, compliance guidance, case placement, technology and ongoing development.

Advisers can learn more about training and development for mortgage brokers and mortgage network compliance support.

This structure helps advisers research residential cases while recognising when wider technical support is required.

Connecting Borrowers with Network Advisers

Connect Experts is the adviser directory associated with the wider Connect structure.

It allows borrowers to search adviser profiles by criteria such as mortgage type, location and language. Advice is provided by the selected adviser or firm, rather than by the directory itself.

Borrowers looking for support can search for a residential mortgage adviser.

For Connect Network ARs, directory visibility can provide a clearer connection between online borrower searches and authorised mortgage advice.

Residential Mortgage Advice Is a Process

A residential mortgage recommendation is not created by a rate table alone.

It develops through fact-finding, affordability assessment, lender research, property checks and suitable documentation. Each stage narrows the available choices until the recommendation reflects the client’s actual circumstances.

This is where adviser judgement remains important. More information does not automatically create a better decision. Better decisions come from identifying which information matters.

Experienced advisers considering network support can review how to join Connect Network.

Next Step for Brokers

If you are an experienced broker looking for a complete UK mortgage and protection network, visit Join Connect Network to explore how Connect can support your residential mortgage business and wider adviser growth.

Residential Mortgage FAQs

What is a residential mortgage?

A residential mortgage is secured against a home occupied by the borrower as their main residence.

How much deposit does a residential borrower need?

The required deposit depends on the lender, property and applicant. A larger deposit may reduce the LTV and widen product choice.

Can a self-employed applicant obtain a residential mortgage?

Yes. Lenders may use accounts, tax documents, salary, dividends, net profit or other evidence when assessing income.

Is a product transfer the same as a remortgage?

No. A product transfer changes the deal with the existing lender. A remortgage moves the borrowing to another lender.

Why might two lenders provide different affordability results?

Each lender applies its own income, expenditure, stress-testing and credit criteria. The same borrower may therefore receive different outcomes.

How can a mortgage network support residential advisers?

A network may provide lender access, compliance oversight, training, technology and help with cases that fall outside standard lender criteria.