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1.  [Home](/)
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3.  FTB Mistakes to Avoid 

UK Mortgage Guide

# First-Time Buyer Mistakes UK 2026: The 15 Costliest Errors to Avoid

Most first-time buyer mistakes cost money that never had to be spent — hundreds of pounds on unnecessary searches, thousands on overpriced insurance, tens of thousands over a mortgage term because a lender was chosen badly. This guide catalogues the 15 most common and most expensive FTB mistakes, in the order they typically get made, with practical advice on how to avoid each. Read it before your first appointment with an estate agent.

First Rung Now Editorial  Updated 15 June 2026  7 min read 

On this page 

1.  [Key takeaways](#key-takeaways)
2.  [Before you start (mistakes 1–4)](#before-you-start-mistakes-14)
3.  [Mistake 1: Applying to your bank first "because they know you"](#mistake-1-applying-to-your-bank-first-because-they-know-you)
4.  [Mistake 2: Racking up hard credit searches](#mistake-2-racking-up-hard-credit-searches)
5.  [Mistake 3: Making big life changes just before applying](#mistake-3-making-big-life-changes-just-before-applying)
6.  [Mistake 4: Underestimating your ongoing costs](#mistake-4-underestimating-your-ongoing-costs)
7.  [Speak with a vetted mortgage broker about avoiding first-time buyer application mistakes](#speak-with-a-vetted-mortgage-broker-about-avoiding-first-time-buyer-application-mistakes)
8.  [During the search (mistakes 5–8)](#during-the-search-mistakes-58)
9.  [Mistake 5: Buying to your maximum affordability](#mistake-5-buying-to-your-maximum-affordability)
10.  [Mistake 6: Ignoring service charges on flats](#mistake-6-ignoring-service-charges-on-flats)
11.  [Mistake 7: Falling in love with the wrong property](#mistake-7-falling-in-love-with-the-wrong-property)
12.  [Mistake 8: Skipping a proper survey](#mistake-8-skipping-a-proper-survey)
13.  [After the offer (mistakes 9–12)](#after-the-offer-mistakes-912)
14.  [Mistake 9: Choosing conveyancer on price alone](#mistake-9-choosing-conveyancer-on-price-alone)
15.  [Mistake 10: Not asking the right seller enquiries](#mistake-10-not-asking-the-right-seller-enquiries)
16.  [Mistake 11: Accepting the estate agent's mortgage referral](#mistake-11-accepting-the-estate-agents-mortgage-referral)
17.  [Mistake 12: Buying furniture and gadgets between exchange and completion](#mistake-12-buying-furniture-and-gadgets-between-exchange-and-completion)
18.  [After completion (mistakes 13–15)](#after-completion-mistakes-1315)
19.  [Mistake 13: Auto-renewing the lender's insurance](#mistake-13-auto-renewing-the-lenders-insurance)
20.  [Mistake 14: Rolling onto the SVR at end of fix](#mistake-14-rolling-onto-the-svr-at-end-of-fix)
21.  [Mistake 15: Not overpaying in year one](#mistake-15-not-overpaying-in-year-one)
22.  [Frequently asked questions](#frequently-asked-questions)
23.  [What is the biggest mistake first-time buyers make in the UK?](#what-is-the-biggest-mistake-first-time-buyers-make-in-the-uk)
24.  [Should I max out my borrowing to buy a bigger house?](#should-i-max-out-my-borrowing-to-buy-a-bigger-house)
25.  [Is buying at auction a good idea for first-time buyers?](#is-buying-at-auction-a-good-idea-for-first-time-buyers)
26.  [Can I still get a mortgage if I've been overdrawn?](#can-i-still-get-a-mortgage-if-ive-been-overdrawn)
27.  [Do I need to tell my lender if my circumstances change between offer and completion?](#do-i-need-to-tell-my-lender-if-my-circumstances-change-between-offer-and-completion)
28.  [Should first-time buyers get life insurance before or after completion?](#should-first-time-buyers-get-life-insurance-before-or-after-completion)
29.  [Related guides](#related-guides)
30.  [First-Time Buyer Guide UK](#first-time-buyer-guide-uk)
31.  [First-Time Buyer Costs](#first-time-buyer-costs)
32.  [How Much Can I Borrow?](#how-much-can-i-borrow)
33.  [FTB Conveyancing Guide](#ftb-conveyancing-guide)
34.  [First-Time Buyer Deposit](#first-time-buyer-deposit)
35.  [Questions to Ask a Broker](#questions-to-ask-a-broker)

### First-time buyers — related reads

MIPs, deposits, schemes and the UK buying process.

-   [Does an MIP include your deposit? Why your MIP is the loan only, and how to work out your real purchase budget. ](/mortgage-in-principle-deposit)
-   [House buying timeline What actually happens — and how long it takes — between offer accepted and keys. ](/house-buying-timeline)
-   [£300k home loan Salary, deposit, monthly cost and stamp duty for a £300,000 mortgage. ](/300k-home-loan)
-   [Help to Buy calculator Equity loan repayment maths and the schemes that replaced Help to Buy in England. ](/help-to-buy-calculator-mortgage)
-   [No deposit mortgage Every active UK 100% LTV product and the trade-offs that decide fit. ](/no-deposit-mortgage)

Explore the hubs

[Mortgages explained](/mortgages)[Remortgages](/remortgages)[Buy-to-let mortgages](/buy-to-let)[Bad credit mortgages](/bad-credit-mortgages)[Mortgage calculators](/mortgage-calculators)[All mortgage guides](/mortgage-guides)[Find a mortgage broker](/find-a-mortgage-broker)

## Key takeaways

-   Multiple hard credit searches in 90 days is the single most common FTB self-inflicted wound. 
-   Overstretching to maximum affordability leaves zero resilience for life changes. 
-   Skipping a proper survey to save £500 can cost £15,000+ in undiscovered issues. 
-   Ignoring service charges on flats leads to nasty surprises within 12–24 months. 
-   Sticking with your bank instead of using a broker typically costs £20k+ over the mortgage term. 

## Before you start (mistakes 1–4)

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### Mistake 1: Applying to your bank first "because they know you"

Your bank sees your salary and current account activity — that's the extent of their advantage. They don't offer better rates because you've banked with them for 10 years. In fact, they typically only offer their own products (2–8 rates) versus a broker's 90+ lenders. Every FTB should get at least three product quotes: your bank, one comparison-site sourced product, and one broker recommendation.

### Mistake 2: Racking up hard credit searches

Every full mortgage application triggers a hard credit search. Three or more hard searches in a 90-day window signals financial distress to automated scorecards and can trigger declines. Soft searches (for Mortgages in Principle at Nationwide, Halifax, most Building Societies) don't leave a visible footprint. Ask before agreeing to any credit check whether it's soft or hard.

### Mistake 3: Making big life changes just before applying

Do not, in the 6 months before your mortgage application:

-   Change jobs (unless it's a big pay rise you can evidence).
-   Go self-employed.
-   Take a car finance or personal loan.
-   Start using Buy Now Pay Later regularly.
-   Get a new credit card and increase your credit limits substantially.
-   Miss any regular payment — even £5 on a subscription.

### Mistake 4: Underestimating your ongoing costs

The mortgage payment isn't your monthly housing cost. Add council tax (£120–£300), utilities (£150–£280), buildings insurance, life cover, service charge (flats — £100–£350), maintenance reserve (target 1% of value annually). Real total is usually 40%–70% above the mortgage payment alone. See our [FTB costs guide](/first-time-buyer-costs).

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## During the search (mistakes 5–8)

Related · keep reading

-   [Bad credit mortgage checker  Place your situation on the lender severity scale and see what a specialist will accept. ](/bad-credit-mortgage-checker)
-   [Bad credit second mortgage  Secured second charges as an alternative to remortgaging when credit has slipped. ](/bad-credit-second-mortgage)

Browse the full hub: [All mortgage guides](/mortgage-guides)

Want a vetted broker to help with During the search (mistakes 5–8)?

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### Mistake 5: Buying to your maximum affordability

The lender's affordability figure is a ceiling — not a target. Borrowing 90%+ of maximum leaves no room for interest rate rises, career breaks, children, or a boiler that breaks in year one. Aim for 75%–85% of maximum. See our [how much can I borrow guide](/how-much-can-i-borrow-first-time-buyer).

### Mistake 6: Ignoring service charges on flats

Flats come with service charges that can rise significantly — from £150/month at purchase to £280/month within 3 years is not unusual. Ask for the full service charge history (last 5 years) before making an offer. Ask about any planned major works (roof repairs, cladding remediation, lift replacement) — these can trigger one-off charges of £5,000–£40,000.

### Mistake 7: Falling in love with the wrong property

Warning signs that most FTBs overlook:

-   Cladding on the exterior of any post-1990 building — EWS1 form required for mortgage.
-   Short lease (below 85 years remaining on a flat) — lease extension costs £5k–£30k.
-   Ground rent doubling clauses (older leases).
-   Japanese knotweed within 7 metres of the property boundary.
-   Non-standard construction (concrete, timber-framed pre-1970, steel-framed) — mortgage lender restrictions.
-   Flood zone 2 or 3 — insurance issues.
-   Recent flying freehold, unregistered land, or ransom strip.

### Mistake 8: Skipping a proper survey

The lender's valuation is not a survey — it's a mortgage risk assessment. Save £500 by skipping a Level 2 HomeBuyer report and you may miss subsidence, dampness, roof failure, electrical hazards, and plumbing on the cusp of failure. A £550 survey has paid for itself many times over.

## After the offer (mistakes 9–12)

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### Mistake 9: Choosing conveyancer on price alone

The £400 conveyancer will take twice as long as the £900 one, miss critical enquiries, and leak fees at every step. Choose a fixed-fee conveyancer with strong Google reviews and clear communication. Reject any who won't quote fixed fees upfront.

### Mistake 10: Not asking the right seller enquiries

Beyond the standard TA6 form, ask your conveyancer to formally raise:

-   Any building work done without planning permission or building regulations sign-off.
-   Boundary disputes with neighbours.
-   Notices from the local authority in the last 10 years.
-   Insurance claims on the property in the last 5 years.
-   For flats: the last 3 years of service charge accounts and reserve fund position.

### Mistake 11: Accepting the estate agent's mortgage referral

Estate agents refer mortgage business to in-house brokers who pay them referral fees (£300–£600 per completed mortgage). These brokers are legally regulated and often perfectly competent — but they have a commercial reason to prefer certain lenders. Get an independent broker quote for comparison.

### Mistake 12: Buying furniture and gadgets between exchange and completion

Between exchange and completion (typically 1–4 weeks), your lender re-runs a credit check. New credit taken in that window — a £4,000 sofa on finance, a £2,000 Klarna order for kitchenware — can void your mortgage offer. Wait until you have the keys before opening any new credit.

## After completion (mistakes 13–15)

Related · keep reading

-   [Bad credit with a large deposit  How a 25%+ deposit unlocks rates adverse-credit borrowers thought were closed. ](/mortgage-with-bad-credit-but-large-deposit)
-   [Contractor mortgages with bad credit  Day-rate and limited-company contractors: which specialist lenders will look at you. ](/mortgages-for-contractors-with-bad-credit)

Browse the full hub: [All mortgage guides](/mortgage-guides)

Want a vetted broker to help with After completion (mistakes 13–15)?

Free FCA-regulated introduction. We carefully check the broker matches your scenario — no pressure, no upfront fees.

[Match me with a broker](/find-a-mortgage-broker)

### Mistake 13: Auto-renewing the lender's insurance

Your lender may sell you buildings insurance for £320/year. The same cover from a comparison site typically costs £180–£220/year. Never accept the auto-quote — shop each renewal.

### Mistake 14: Rolling onto the SVR at end of fix

At the end of your 2 or 5-year fixed rate, your lender's Standard Variable Rate (SVR) — typically 7%–9% in 2026 — kicks in automatically. On a £200k mortgage, that's £300–£500/month extra. Set a calendar reminder 6 months before your fix ends and remortgage or product-transfer.

### Mistake 15: Not overpaying in year one

Most FTB fixed rates allow 10% annual overpayments penalty-free. Overpaying £200/month from month one of a £200k mortgage saves ~£35,000 in interest over 30 years and cuts the term by nearly 6 years. It's the highest-return use of surplus cash most FTBs will ever have.

## Frequently asked questions

### What is the biggest mistake first-time buyers make in the UK?

### Should I max out my borrowing to buy a bigger house?

### Is buying at auction a good idea for first-time buyers?

### Can I still get a mortgage if I've been overdrawn?

### Do I need to tell my lender if my circumstances change between offer and completion?

### Should first-time buyers get life insurance before or after completion?

## Related guides

[

### First-Time Buyer Guide UK

Complete step-by-step FTB journey.

Read guide ](/first-time-buyer-guide-uk)[

### First-Time Buyer Costs

Every fee, tax and one-off cost.

Read guide ](/first-time-buyer-costs)[

### How Much Can I Borrow?

Income multiples and affordability.

Read guide ](/how-much-can-i-borrow-first-time-buyer)[

### FTB Conveyancing Guide

How to choose your solicitor wisely.

Read guide ](/first-time-buyer-conveyancing)[

### First-Time Buyer Deposit

How much to save at each LTV band.

Read guide ](/first-time-buyer-deposit)[

### Questions to Ask a Broker

Get the right answers before signing.

Read guide ](/questions-to-ask-mortgage-broker)

First-Time Buyer Match

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### Hubs

-   [Mortgages](/mortgages)
-   [Remortgages](/remortgages)
-   [Buy To Let](/buy-to-let)
-   [Bad Credit Mortgages](/bad-credit-mortgages)
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### Calculators

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-   [Loan-to-Value (LTV) Calculator](/calculators/borrowing)
-   [Remortgage Savings Calculator](/calculators/remortgage)
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-   [Rent vs Buy Calculator](/calculators/comparison)
-   [Self-Employed Calculator](/calculators/specialist)
-   [Fixed-Rate Expiry Calculator](/calculators/refinance)
-   [Salary to Mortgage Calculator](/calculators/income)
-   [Rental Yield & ROI Calculator](/calculators/investment)

### Bad credit & specialist

-   [Bad Credit Mortgage Checker](/bad-credit-mortgage-checker)
-   [Poor Credit Mortgage Lenders](/poor-credit-mortgage-lenders)
-   [Remortgage with Bad Credit](/remortgage-with-bad-credit)
-   [Bad Credit + Large Deposit](/mortgage-with-bad-credit-but-large-deposit)
-   [Contractor Bad-Credit Mortgages](/mortgages-for-contractors-with-bad-credit)
-   [First-Time Buyer Adverse Credit](/first-time-buyer-adverse-credit-mortgages)
-   [MIP with Bad Credit](/mortgage-in-principle-bad-credit)

### Buy-to-let & bridging

-   [Best HMO Mortgage Lenders](/best-hmo-mortgage-lenders)
-   [Holiday Let Mortgages](/holiday-let-mortgages-best-rates)
-   [Limited Company BTL](/landlord-misconceptions-limited-company-btl)
-   [BTL Houses Sheffield](/buy-to-let-houses-sheffield-mortgage)
-   [BTL Interest-Only Calculator](/buy-to-let-interest-only-calculator)
-   [Bad Credit Bridging Loan](/bad-credit-bridging-loan)
-   [Bridging Loans for Bad Credit](/bridging-loans-for-bad-credit)

### Rates, rules & circumstances

-   [Fixed vs Tracker](/fixed-vs-tracker-mortgage)
-   [Tracker vs Fixed (Rates)](/tracker-vs-fixed-mortgage)
-   [Does MIP Include Deposit?](/mortgage-in-principle-deposit)
-   [House Buying Timeline](/house-buying-timeline)
-   [Two Residential Mortgages](/two-residential-mortgages)
-   [Parent–Child Joint Mortgage](/parent-child-joint-mortgage)
-   [Spouse Visa Mortgages](/mortgage-lenders-for-spouse-visa-uk)
-   [RIO Mortgage Calculator](/retirement-interest-only-mortgage-calculator)
-   [Overpay Mortgage or Pension](/overpay-mortgage-or-pension)

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