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The Mortgage Process: A Step-by-Step Guide

By Maxim Cohen·13 July 2026·13 min read

Applying for a mortgage can feel complicated, particularly if you are buying a home for the first time.

There are several parties involved, including the mortgage lender, mortgage adviser, estate agent, solicitor, surveyor and seller. Understanding what happens at each stage can help you prepare properly, respond quickly and avoid unnecessary delays.

This guide explains the mortgage process step by step, from reviewing your finances through to receiving the keys to your new property.

At The UK Adviser, we help first-time buyers, home movers, landlords and homeowners understand their mortgage options and navigate the application process.

Step 1: Review Your Finances

Before viewing properties or submitting a mortgage application, take time to understand your financial position.

Review:

  • Your income
  • Regular household expenditure
  • Loans and credit cards
  • Car finance
  • Childcare costs
  • Maintenance payments
  • Other financial commitments
  • Deposit savings
  • Credit history

Mortgage lenders assess affordability rather than looking at income alone.

A clear understanding of your finances can help you establish a realistic property budget.

Step 2: Check Your Credit Reports

Your credit history may influence which lenders and mortgage products are available.

Before applying, review your credit reports and check:

  • Your name and address details
  • Electoral roll registration
  • Open credit accounts
  • Missed or late payments
  • Defaults
  • County Court Judgments
  • Financial associations
  • Credit searches
  • Accounts you do not recognise

Different credit reference agencies may hold different information.

Correct any inaccurate information before submitting a mortgage application where possible.

Step 3: Build and Evidence Your Deposit

Your deposit is the amount you contribute towards the property purchase.

The mortgage covers the remaining amount, subject to the lender's valuation and lending criteria.

Your deposit may come from:

  • Personal savings
  • A Lifetime ISA
  • Sale proceeds from another property
  • A gift from a family member
  • Inheritance
  • Investments

You may need to provide evidence showing where the deposit came from.

Where money is being gifted, the lender and solicitor may request a gifted deposit declaration, identification and evidence of funds from the person providing the gift.

Step 4: Speak to a Mortgage Adviser

You do not need to wait until you have found a property before seeking mortgage advice.

Speaking to a mortgage adviser early may help you:

  • Understand how much you may be able to borrow
  • Identify suitable lenders
  • Understand deposit requirements
  • Review your credit circumstances
  • Prepare the correct documents
  • Avoid approaching lenders whose criteria may not fit your circumstances

This can be particularly useful if you are self-employed, have variable income, previous credit issues or a more complex application.

Step 5: Prepare Your Documents

Mortgage lenders usually require evidence supporting the information in your application.

Documents may include:

  • Passport or driving licence
  • Proof of address
  • Recent payslips
  • Latest P60
  • Personal bank statements
  • Evidence of deposit
  • Details of loans and credit commitments
  • Existing mortgage statement, where applicable

Self-employed applicants may also need:

  • SA302 tax calculations
  • HMRC Tax Year Overviews
  • Business accounts
  • Business bank statements
  • Accountant's details
  • Current contracts, where relevant

Preparing these documents early can help reduce delays later.

Step 6: Understand How Much You May Be Able to Borrow

Mortgage borrowing depends on more than a simple income multiple.

Lenders may consider:

  • Basic salary
  • Overtime
  • Bonuses
  • Commission
  • Self-employed profits
  • Dividends
  • Existing commitments
  • Dependants
  • Deposit size
  • Mortgage term
  • Credit history

Different lenders may produce different affordability results from the same information.

The maximum amount available is not always the amount you should borrow. Consider whether repayments remain comfortable alongside bills, savings and future plans.

Step 7: Obtain an Agreement in Principle

An Agreement in Principle, sometimes called a Decision in Principle or Mortgage in Principle, provides an indication of how much a lender may be willing to lend.

It is based on the information supplied and may include a credit search.

An Agreement in Principle:

  • Is not a mortgage offer
  • Does not guarantee final approval
  • Can help establish your property budget
  • May demonstrate to estate agents that you have begun arranging finance

Check whether the lender will carry out a soft or hard credit search.

Step 8: Begin Your Property Search

Once you understand your likely budget, you can begin viewing suitable properties.

Consider more than the purchase price.

Review:

  • Location
  • Transport links
  • Schools
  • Local amenities
  • Property condition
  • Energy efficiency
  • Council Tax
  • Service charges
  • Ground rent
  • Lease length
  • Future maintenance requirements

The property must also meet the mortgage lender's criteria.

Some lenders place restrictions on certain construction types, short leases, high-rise flats, properties above commercial premises or homes with unusual features.

Step 9: Make an Offer

When you find a property you wish to purchase, make an offer through the estate agent.

The seller may accept, reject or negotiate the offer.

Before agreeing a figure, consider:

  • Comparable local property prices
  • The property's condition
  • Necessary repairs
  • How long it has been on the market
  • Your maximum affordable budget
  • Whether other buyers are interested

An accepted offer is generally subject to contract in England and Wales.

The legal process and terminology differ in Scotland and Northern Ireland.

Step 10: Appoint a Solicitor or Conveyancer

You will need a solicitor or licensed conveyancer to handle the legal work.

Their role may include:

  • Reviewing the contract
  • Conducting property searches
  • Checking ownership and title
  • Raising enquiries with the seller's solicitor
  • Reviewing leasehold information
  • Reporting to you and the mortgage lender
  • Managing exchange and completion
  • Registering your ownership

Choose a solicitor who is accepted by your proposed mortgage lender.

Step 11: Submit the Full Mortgage Application

Once your offer has been accepted, your adviser can prepare the full mortgage application.

The application will usually include:

  • Personal information
  • Address history
  • Employment details
  • Income
  • Expenditure
  • Credit commitments
  • Deposit information
  • Property details
  • Solicitor information

Review the application carefully before submission.

Incorrect or inconsistent information can create delays or affect the lender's decision.

Step 12: The Lender Reviews Your Application

The lender will assess the application and supporting documents.

This process is often called underwriting.

The underwriter may review:

  • Income evidence
  • Bank statements
  • Credit history
  • Deposit source
  • Existing commitments
  • Affordability
  • Employment stability
  • Property suitability

The lender may request further documents or explanations.

Responding promptly can help keep the application moving.

Step 13: The Mortgage Valuation

The lender will normally arrange a valuation of the property.

The valuation is primarily for the lender's benefit. It helps confirm whether the property provides suitable security for the mortgage.

The valuation may consider:

  • Property value
  • General condition
  • Construction
  • Location
  • Saleability
  • Significant defects

A mortgage valuation is not the same as a detailed property survey.

Step 14: Arrange an Appropriate Property Survey

You may choose to arrange your own survey in addition to the lender's valuation.

Options may include:

  • A condition report
  • A home survey
  • A full building survey

The appropriate survey depends on the property's age, condition and construction.

A more detailed survey may be advisable for older, altered or unusual properties.

Step 15: Deal With Valuation Issues

Sometimes the lender values the property below the agreed purchase price. This is commonly known as a down valuation.

Where this happens, options may include:

  • Renegotiating the price
  • Increasing your deposit
  • Challenging the valuation with suitable evidence
  • Applying to another lender
  • Withdrawing from the purchase

Do not assume another lender will necessarily provide a higher valuation.

Step 16: Receive the Mortgage Offer

If the lender is satisfied with the applicant, property and valuation, it may issue a formal mortgage offer.

The offer sets out important details including:

  • Mortgage amount
  • Interest rate
  • Product period
  • Mortgage term
  • Monthly repayments
  • Fees
  • Conditions
  • Early repayment charges

Read the offer carefully and discuss anything you do not understand with your adviser or solicitor.

A mortgage offer may remain valid for a limited period.

Step 17: Complete the Legal Work

While the mortgage application is progressing, your solicitor will continue with the conveyancing.

This may include:

  • Reviewing searches
  • Checking planning and building regulations
  • Reviewing leasehold documents
  • Investigating title restrictions
  • Confirming boundaries
  • Raising legal enquiries
  • Reviewing fixtures and fittings
  • Reporting on the mortgage offer

Do not exchange contracts until your solicitor confirms that the legal work is complete and the mortgage offer is in place.

Step 18: Arrange Buildings Insurance

Your lender will usually require suitable buildings insurance to be in place from exchange of contracts.

Buildings insurance may cover risks such as:

  • Fire
  • Flood
  • Storm damage
  • Subsidence
  • Structural damage

Check the mortgage conditions and ensure the cover starts at the correct time.

Contents insurance is separate and covers your possessions.

Step 19: Exchange Contracts

Exchange of contracts is the point at which the purchase usually becomes legally binding.

At exchange:

  • Signed contracts are exchanged
  • The completion date is agreed
  • The deposit is transferred
  • Both buyer and seller become committed to the transaction

Pulling out after exchange can have serious financial and legal consequences.

Your solicitor will explain the commitment before you proceed.

Step 20: Prepare for Completion

Between exchange and completion, final arrangements are made.

These may include:

  • Signing final documents
  • Transferring any remaining deposit funds
  • Completing final searches
  • Requesting mortgage funds
  • Confirming removal arrangements
  • Taking meter readings
  • Arranging utilities and insurance

Avoid taking out new borrowing or making significant financial changes before completion without speaking to your mortgage adviser.

A lender may carry out final checks before releasing the mortgage funds.

Step 21: Completion

On completion day, your solicitor transfers the purchase funds to the seller's solicitor.

Once the funds are received:

  • Ownership transfers to you
  • The estate agent can release the keys
  • The seller must leave the property
  • Your mortgage formally begins

Completion can take place at different times during the day depending on the transfer of funds and the length of the property chain.

Step 22: After Completion

Following completion, your solicitor will normally:

  • Pay any Stamp Duty Land Tax due
  • Register you as the legal owner
  • Register the lender's charge
  • Send final documents where required

You should also:

  • Check the property
  • Record meter readings
  • Update your address
  • Arrange utility accounts
  • Store mortgage and legal documents safely
  • Set up or confirm mortgage payments

How Long Does the Mortgage Process Take?

There is no fixed timescale.

The process may be affected by:

  • Application complexity
  • Lender processing times
  • Valuation availability
  • Property type
  • Legal enquiries
  • Search results
  • The length of the property chain
  • How quickly documents are provided

A straightforward application may progress relatively quickly, while complex cases can take longer.

Common Causes of Mortgage Delays

Delays may be caused by:

  • Missing documents
  • Inconsistent information
  • Slow responses
  • Property valuation issues
  • Legal title problems
  • Leasehold queries
  • Deposit evidence
  • Credit issues
  • Changes in circumstances
  • Mortgage offer conditions

Preparation and communication are important throughout the process.

Common Mistakes to Avoid

Applying Before Reviewing Your Credit

Incorrect information or undisclosed credit issues may affect the application.

Taking Out New Finance

New loans, car finance or credit cards may reduce affordability.

Moving Deposit Funds Without Records

Keep a clear paper trail showing where your deposit came from.

Choosing a Property Before Checking Affordability

Understanding your budget first can prevent disappointment.

Relying Only on the Mortgage Valuation

The lender's valuation is not a full structural survey.

Hiding Information

Always provide complete and accurate information to your adviser and lender.

Changing Jobs During the Process

A change in employment may affect the lender's assessment and must be disclosed.

Why Use a Mortgage Adviser?

Mortgage lenders have different affordability assessments, product criteria and underwriting approaches.

A mortgage adviser can help you:

  • Understand your borrowing position
  • Prepare your documents
  • Compare suitable mortgage products
  • Identify appropriate lenders
  • Complete the application accurately
  • Communicate with the lender
  • Respond to underwriting questions
  • Track the application through to completion

Professional advice can be particularly valuable where the application involves self-employment, variable income, previous credit issues or an unusual property.

Frequently Asked Questions

Do I need an Agreement in Principle before viewing properties?

It is not always compulsory, but it can help establish your budget and demonstrate that you have started arranging finance.

When should I apply for the mortgage?

A full mortgage application is normally submitted after your offer on a property has been accepted.

Is a mortgage offer guaranteed after an Agreement in Principle?

No. The full application remains subject to underwriting, document checks, valuation and lender approval.

Does the lender's valuation check the condition of the property?

Only to a limited extent. It is mainly carried out for the lender. Consider obtaining your own survey.

Can the lender withdraw a mortgage offer?

A lender may withdraw or amend an offer if circumstances change, information is inaccurate, the property becomes unacceptable or offer conditions are not met.

Can I change jobs after receiving a mortgage offer?

You must inform your adviser and lender of material changes. A job change may affect the lender's decision.

What happens if the property is down-valued?

You may need to renegotiate, contribute a larger deposit, challenge the valuation or reconsider the purchase.

When do mortgage repayments begin?

Your lender will confirm the first payment date and amount after completion. The first payment may differ from your regular monthly payment.

Why Choose The UK Adviser?

At The UK Adviser, we guide clients through every stage of the mortgage process.

We assist:

  • First-time buyers
  • Home movers
  • Remortgage clients
  • Self-employed applicants
  • Company directors
  • Landlords
  • Applicants with complex income
  • Clients with previous credit issues

Our advisers take the time to understand your circumstances, explain the process clearly and help identify mortgage options that may suit your needs.

Speak to The UK Adviser

Whether you are preparing to buy your first home, moving property or reviewing your existing mortgage, early advice can help you approach the process with greater clarity.

Contact The UK Adviser to discuss your mortgage plans and the next steps.

Important Information

This article is provided for general information only and does not constitute personalised mortgage, legal, tax or financial advice.

Mortgage products, lender criteria and affordability assessments vary and may change. A mortgage application is subject to lender approval, valuation, legal checks and individual circumstances.

You should obtain personalised mortgage and legal advice before entering into a property transaction.

Your home may be repossessed if you do not keep up repayments on your mortgage.

Ready to speak to an adviser?

Our experienced mortgage advisers are here to guide you through every step of the process.

Your home may be repossessed if you do not keep up repayments on your mortgage or loans secured against your property.

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