Buying a home is one of the largest financial commitments most people make. For many UK buyers, the process involves two major financial decisions: choosing a mortgage that fits the budget and arranging suitable insurance to protect the property and belongings.

These decisions are connected, but they are not the same.

A mortgage is a long-term borrowing arrangement used to purchase a property. Home insurance protects against specific risks such as damage to the building, theft or damage to possessions, depending on the policy.

Understanding both before committing can make the buying process easier and help prevent expensive surprises later.

This guide explains the main stages, costs, mortgage types, insurance options and common mistakes buyers and homeowners should understand.

1. Start With Your Realistic Home-Buying Budget

Before looking at properties, work out how much you can comfortably afford rather than starting with the maximum amount a lender might offer.

Your budget needs to account for more than the mortgage payment.

Consider:

• Deposit
• Mortgage repayments
• Council tax
• Energy bills
• Water bills
• Buildings and contents insurance
• Maintenance and repairs
• Service charges for some leasehold properties
• Ground rent where applicable
• Legal and conveyancing costs
• Moving expenses
• Stamp Duty Land Tax or other property taxes where applicable

MoneyHelper recommends understanding what you can afford before starting the property search and considering how repayments would remain manageable if your circumstances changed.

A mortgage calculator can provide an estimate, but the result should not be treated as a guaranteed borrowing amount.

2. Understand Your Deposit and Loan-to-Value Ratio

Your deposit is the amount you contribute toward the purchase price rather than borrowing from the mortgage lender.

For example, suppose a property costs £250,000 and you have a £25,000 deposit.

You would need to borrow £225,000.

Your loan-to-value ratio, or LTV, would therefore be 90%.

The calculation is:

£225,000 ÷ £250,000 × 100 = 90% LTV

LTV matters because mortgage products are often priced differently depending on how much you borrow relative to the property’s value.

A larger deposit generally means a lower LTV, although the actual mortgage rate you receive depends on the lender, product and your circumstances.

MoneyHelper explains that LTV is the proportion of the property value being financed by the mortgage and that lower LTV borrowing can sometimes provide access to lower mortgage rates.

3. Keep Your Deposit Separate From Your Emergency Money

Putting every available pound into a deposit can leave you financially exposed after completion.

Homeownership brings unexpected expenses.

A boiler may fail. A washing machine may need replacing. A leak may require urgent attention. You may also face higher-than-expected moving or furnishing costs.

Before deciding how much of your savings should become part of the deposit, consider keeping an accessible emergency reserve.

If your deposit is currently sitting in savings, review the account and its interest rate rather than leaving a large balance somewhere unsuitable. Our guide on how interest rates affect the money in a savings account explains why the rate paid on your savings matters.

The aim is to balance the desire for a larger deposit with the need to remain financially resilient after moving.

4. Understand the Main Types of Mortgage

There are several mortgage structures available in the UK, but two important decisions are the interest-rate type and the way the mortgage is repaid.

Fixed-Rate Mortgages

A fixed-rate mortgage keeps the interest rate unchanged for a specified period.

For example, you might see a two-year or five-year fixed-rate deal.

The main benefit is payment certainty during the fixed period. If market rates change during that period, your agreed mortgage rate does not automatically change.

However, fixed-rate deals can include early repayment charges if you leave the mortgage before the deal ends.

When the fixed period finishes, you normally need to arrange another deal or move onto the lender’s standard variable rate.

Tracker Mortgages

A tracker mortgage normally follows another interest rate, commonly the Bank of England base rate, plus or minus a specified margin.

If the tracked rate changes, your mortgage rate can change as well.

This means your monthly repayment may increase or decrease.

Before choosing a tracker, make sure your household budget could cope with higher repayments.

Standard Variable Rate Mortgages

A lender’s standard variable rate, or SVR, is set by the lender and can change.

Borrowers may move onto an SVR after an introductory fixed or variable deal ends unless they arrange another mortgage product.

MoneyHelper notes that SVRs are often higher than introductory mortgage rates, which is why borrowers should pay attention to when their current deal ends.

5. Understand Repayment and Interest-Only Mortgages

The second major mortgage decision is how you repay the capital.

Repayment Mortgage

With a repayment mortgage, your monthly payments generally cover both interest and part of the amount borrowed.

If you maintain the agreed payments throughout the mortgage term, the intention is to repay the mortgage by the end of that term, subject to the mortgage terms.

Interest-Only Mortgage

With an interest-only mortgage, your regular payments cover the interest but do not normally repay the capital.

You therefore need a suitable plan for repaying the amount borrowed at the end of the mortgage term.

This makes understanding the repayment strategy particularly important.

MoneyHelper distinguishes between repayment mortgages, where payments reduce the mortgage balance, and interest-only mortgages, where the capital needs to be repaid separately.

6. Get a Mortgage in Principle

Once you have an idea of your budget, you can consider getting a Mortgage in Principle, also known as an Agreement in Principle or Decision in Principle.

It provides an indication of how much a lender might be willing to lend based on information available at that stage.

It is not the same as a formal mortgage offer.

The lender will normally carry out further checks before making a final decision.

MoneyHelper says a Mortgage in Principle can help buyers establish a realistic property budget, but it does not guarantee the final mortgage offer.

Do not treat the maximum amount shown on an AIP as a target.

Your personal budget may be lower than the lender’s maximum.

7. Compare the Total Cost, Not Just the Interest Rate

A mortgage with the lowest advertised rate is not automatically the cheapest option for your circumstances.

Look at:

• Interest rate
• APRC
• Product or arrangement fee
• Valuation costs
• Legal costs where applicable
• Early repayment charges
• Exit fees
• Overpayment rules
• Mortgage term
• Cashback or incentives
• Whether the product can be transferred if you move

APRC, or Annual Percentage Rate of Charge, is designed to show the yearly cost of the mortgage over its full term, including certain fees and charges.

MoneyHelper recommends comparing the complete cost and features rather than focusing only on the headline interest rate.

For example, a mortgage with a lower rate but a large upfront fee may not work out cheaper than a slightly higher-rate product with a much smaller fee.

8. Prepare Your Documents Before Applying

Mortgage applications can require substantial financial information.

Depending on your circumstances and lender, you may need documents such as:

• Proof of identity
• Proof of address
• Payslips
• P60
• Bank statements
• Proof of deposit
• Evidence of benefits or other income
• Details of existing debts
• Gifted-deposit documentation where relevant

Self-employed applicants may need additional evidence of income.

Preparing documents in advance can make the application process more straightforward.

MoneyHelper’s current mortgage application guidance notes that lenders commonly request proof of earnings, bank statements and evidence of the deposit, although exact requirements vary.

9. Understand the Other Costs of Buying a Home

The deposit and mortgage are only part of the purchase cost.

You may also need to budget for:

Conveyancing

A solicitor or licensed conveyancer handles the legal work involved in buying the property.

Surveys and Valuation

The lender may arrange a valuation to assess the property.

You may also choose to pay for a more detailed survey depending on the property and your circumstances.

Property Taxes

Depending on where the property is located, its value and your circumstances, you may need to pay Stamp Duty Land Tax, Land Transaction Tax or another property tax.

Moving Costs

Removal services, storage, packing materials and other moving expenses can add to the total cost.

MoneyHelper recommends including these additional expenses in your home-buying budget rather than focusing only on the purchase price and mortgage.

10. Understand Buildings Insurance

Buildings insurance is designed to protect the structure of your home.

Depending on the policy, this can include areas such as:

• Roof
• Walls
• Floors
• Permanent fixtures
• Fitted kitchens
• Bathrooms
• Certain outbuildings

Policies commonly provide cover for risks such as fire, flooding, storms and some types of water damage, but exact cover and exclusions vary.

MoneyHelper explains that buildings insurance protects the structure and permanent fixtures of a property and that policy exclusions differ between insurers.

Is Buildings Insurance Legally Required?

There is an important distinction here.

Buildings insurance is not generally a legal requirement simply because you own a property.

However, a mortgage lender will usually require appropriate buildings insurance as part of the mortgage agreement.

MoneyHelper explains that a mortgage contract will typically require buildings insurance even though the law itself does not generally make the insurance compulsory.

Always check your mortgage conditions and the insurance requirements specified by your lender.

11. Understand Contents Insurance

Buildings insurance protects the property itself.

Contents insurance protects your belongings.

This can include items such as:

• Furniture
• Clothing
• Electronics
• Kitchen equipment
• Personal belongings
• Jewellery, subject to policy limits
• Other household possessions

The exact protection depends on the policy.

Contents insurance may cover risks such as theft, fire and certain types of water damage.

Additional cover may be available for accidental damage, possessions taken outside the home or high-value items.

MoneyHelper notes that contents insurance is generally optional, but homeowners may still choose it to protect belongings that could be expensive to replace.

12. Calculate the Right Level of Insurance Cover

One of the biggest mistakes is choosing an insurance amount without understanding what it represents.

Buildings insurance is generally based on the cost of rebuilding the property rather than its market value.

The rebuild cost can be significantly different from what you paid for the property.

MoneyHelper recommends using an appropriate rebuild-cost calculation when arranging buildings insurance.

For contents insurance, think about what it would cost to replace your possessions.

Walk through every room and consider:

• Furniture
• Televisions
• Computers
• Phones
• Clothing
• Kitchen equipment
• Appliances
• Jewellery
• Tools
• Children’s belongings
• Other valuable possessions

Underestimating the value of your belongings could leave you inadequately insured.

13. Pay Attention to the Excess

The excess is the amount you may have to pay toward a claim before the insurer contributes.

For example, if an accepted claim results in £2,000 of covered damage and your applicable excess is £250, you would normally be responsible for the first £250, subject to the policy terms.

A higher excess can sometimes reduce the insurance premium.

However, choosing an excess that you could not realistically afford would create a problem if you needed to make a claim.

Check both the standard excess and any additional excess that may apply to particular risks, such as subsidence or certain types of water damage.

14. Check Insurance Exclusions Carefully

Do not assume that “home insurance” means every type of damage is covered.

Policies can exclude or restrict claims involving:

• Wear and tear
• Poor maintenance
• Deliberate damage
• Certain types of leaks
• Unoccupied properties
• Specific high-value possessions
• Certain accidental damage
• Some types of flooding or subsidence depending on circumstances and policy terms

MoneyHelper highlights that exclusions vary between policies and that normal wear and tear is generally not covered.

Read the policy documents before buying rather than relying solely on the short summary shown in a comparison result.

15. Leasehold Buyers Need to Check Buildings Insurance

If you are buying a leasehold flat or maisonette, buildings insurance may work differently.

In many leasehold arrangements, the freeholder or managing organisation arranges buildings insurance and the cost may form part of the service charge.

You may therefore not need to arrange a separate buildings policy yourself.

However, you should confirm this with your solicitor or conveyancer before completion.

You will generally still need to consider contents insurance for your own belongings.

MoneyHelper notes that buildings insurance arrangements for leasehold properties can differ depending on the ownership structure.

16. Consider Life and Income Protection Separately

Buildings and contents insurance protect the property and possessions.

They do not automatically protect your ability to make mortgage payments if your circumstances change.

Depending on your circumstances, you may consider other forms of protection such as:

• Life insurance
• Income protection
• Critical illness cover
• Mortgage payment protection

These products are different from buildings and contents insurance and have different conditions and exclusions.

Do not buy additional insurance simply because it is presented alongside a mortgage.

Instead, understand what financial risk the policy is designed to address and whether the cover fits your circumstances.

17. Arrange Buildings Insurance at the Correct Time

The timing of buildings insurance is important when purchasing a property.

The exact point at which you become responsible for the property can depend on the transaction and jurisdiction.

For England and Wales, MoneyHelper’s home-buying guidance says buyers should arrange buildings insurance to start from the appropriate point specified during the transaction, and its guidance recommends checking the arrangements with your conveyancer.

Your solicitor or conveyancer should confirm the relevant date and whether any existing policy arrangements affect you.

Do not leave this until the last minute.

18. Compare Insurance on a Like-for-Like Basis

When comparing policies, the cheapest premium is not necessarily the most suitable option.

Compare:

• Buildings cover
• Contents cover
• Rebuild limit
• Contents limit
• Single-item limits
• Accidental damage
• Personal possessions cover
• Alternative accommodation
• Legal expenses
• Home emergency cover
• Excess
• Exclusions
• Policy conditions

MoneyHelper recommends checking the actual level of cover rather than automatically choosing the cheapest quote.

A cheaper policy that excludes something important may cost more in the long run if you need to make a claim.

19. Check Your Insurance Every Year

Your insurance needs can change.

You may buy new electronics, jewellery or furniture. You may renovate the property, build an extension or make other significant changes.

Your rebuild cost and contents value can also change over time.

Review the policy at renewal and check whether the limits still reflect your situation.

MoneyHelper recommends telling your insurer about relevant changes to the property or your circumstances because failing to provide accurate information can affect a future claim.

20. Check Mortgage and Insurance Providers Before Paying

When arranging a mortgage or insurance through a broker, adviser or other financial firm, check that the firm is authorised where appropriate.

The FCA provides a Firm Checker that consumers can use to check whether a financial firm is authorised and has permission to provide the relevant service.

This is particularly important when dealing with firms you have not used before.

Do not assume that a professional-looking website automatically means a firm is authorised.

Common Mortgage and Insurance Mistakes to Avoid

Choosing a mortgage based only on the lowest rate

Fees, repayment terms and early repayment charges can change the overall cost.

Borrowing the maximum amount available

A lender’s maximum is not necessarily the amount that fits comfortably within your household budget.

Ignoring what happens when a fixed deal ends

Put the end date in your calendar well in advance so you have time to investigate your options.

Assuming buildings insurance covers possessions

It normally does not. Contents insurance is designed for your belongings.

Underestimating contents

Calculate the replacement cost of your possessions rather than guessing.

Choosing an unaffordable excess

A lower premium is not useful if you cannot afford the excess when making a valid claim.

Automatically renewing insurance

Review the price and cover before renewal rather than assuming the existing policy remains suitable.

Ignoring mortgage fees

A lower interest rate can come with a larger product fee.

Taking advice from an unverified firm

Check relevant financial firms through the FCA’s official register or Firm Checker before proceeding.

A Simple Home-Buying Checklist

Before buying, make sure you have:

• Calculated a realistic monthly budget
• Saved an appropriate deposit
• Considered an emergency reserve
• Checked your credit reports
• Compared mortgage products
• Considered the mortgage term
• Understood fixed and variable rates
• Checked mortgage fees
• Obtained a Mortgage in Principle if appropriate
• Budgeted for legal and moving costs
• Checked applicable property taxes
• Arranged appropriate buildings insurance
• Considered contents insurance
• Calculated realistic rebuild and contents values
• Checked insurance exclusions and excesses
• Confirmed leasehold insurance arrangements where relevant
• Reviewed any additional protection needs
• Checked relevant financial firms before using their services

Frequently Asked Questions

Do I legally need home insurance in the UK?

Buildings insurance is not generally required by law simply because you own a home. However, mortgage lenders will normally require buildings insurance under the mortgage agreement. Contents insurance is generally optional.

What is the difference between buildings and contents insurance?

Buildings insurance protects the physical structure and permanent fixtures of the property. Contents insurance protects your belongings inside the property. The exact cover depends on the policy.

Is a Mortgage in Principle a guaranteed mortgage?

No. A Mortgage in Principle provides an indication of what a lender may be willing to lend. A full mortgage application involves further checks before a formal mortgage offer is issued.

Is a fixed-rate mortgage always cheaper?

Not necessarily. A fixed rate provides payment certainty during the fixed period, but the overall cost depends on the interest rate, fees, mortgage term and other conditions. A variable-rate mortgage can also become more expensive or cheaper as rates change.

How much should I insure my house for?

Buildings insurance should generally be based on the estimated cost of rebuilding the property rather than its market value. Contents insurance should reflect the realistic replacement value of your belongings.

Should I use a mortgage broker?

A broker can help you compare mortgage options, but the type of service varies. Some advisers work with one lender, while independent brokers can consider products from multiple providers. Understand how the adviser is paid and what range of products they can access before proceeding.

Final Thoughts

Buying a home involves much more than finding a property and securing a mortgage.

You need to understand the amount you can comfortably borrow, the deposit required, the mortgage structure, the interest rate, fees and what happens when an introductory deal ends.

Insurance is equally important. Buildings insurance protects the property itself, while contents insurance can protect the belongings inside it. The right level of cover depends on the property, your possessions and the specific terms of the policy.

The safest approach is to compare the complete cost and conditions rather than focusing on one headline figure.

Take your time, check the paperwork, ask questions when something is unclear and make sure your mortgage and insurance commitments remain affordable within your wider household budget.

This article is for general educational purposes only and does not constitute personalised mortgage, insurance, legal or financial advice. Mortgage products, interest rates, insurance terms, taxes and eligibility requirements can change. Always check current terms with the relevant lender, insurer, adviser or official government source before making a financial decision.