First Time Buyer Mortgage

First Time Buyer Mortgages: Everything You Need to Know

Deposits, guarantors, bad credit, buy-to-let purchases — the honest version of what actually affects your first-time buyer mortgage, from a whole-of-market broker who looks past the headline rates.

Written By: James Blackler

On Jun 10, 2026

Buying your first home comes with more questions than any single conversation usually covers — how much deposit you actually need, whether bad credit rules you out, what a guarantor really commits to. Some of it depends on your circumstances, some on the lender, and a lot of the “advice” floating around online is either outdated or written for a headline rather than for you.

This is the honest version: what actually affects your first-time buyer mortgage, and where it’s worth getting a proper conversation rather than working it out alone.

Are You Actually a First-Time Buyer?

Broadly, yes if you’ve never owned a residential property anywhere in the world and intend to live in the one you’re buying. It gets less obvious around inheritance and joint purchases — inheriting a property in the past (even one you’ve since sold) can affect your status, and buying with a partner who’s owned before changes things too. Worth checking early, since it affects both your mortgage options and any stamp duty relief.

How Much Deposit Do You Actually Need?

It depends on the lender and mortgage type, but as a rule: a larger deposit opens up more products and a smoother application. On a £350,000 flat, a 10% deposit means finding £35,000 upfront; at 5%, that’s £17,500 — but with fewer lenders willing to consider you. If a large deposit isn’t realistic right now, there are routes built for exactly that: family-backed schemes, smaller-deposit products, or a guarantor. Worth a proper conversation rather than working through eligibility lists alone.

Guarantor Mortgages and Low-Deposit Routes

Fully deposit-free mortgages are rare and come with conditions attached. Guarantor mortgages are the better-known route — a family member covers repayments if you can’t, or offers savings or property as security, which can help you borrow more or be accepted with less deposit than you’d manage alone. It’s not right for everyone, and it puts real responsibility on the guarantor, so have that conversation honestly before treating it as the default plan.

Bad Credit or a Thin Credit File

Neither rules you out automatically, but both narrow the pool of lenders willing to consider you. What matters is the type and age of any issue — a missed phone bill three years ago reads very differently to a recent default. A thin file (common if you’ve simply avoided credit cards) can be just as tricky for some lenders as a poor one, purely because there’s not much to assess. Either way, the fix is the same: find the lenders who take a more flexible view, rather than applying speculatively and racking up rejections.

What Rates Actually Depend On

We won’t quote figures here — they move constantly, and what’s available to you depends on your deposit, income, credit profile, and the property itself. Headline rates you see advertised are usually reserved for buyers with the biggest deposits and cleanest credit, so they’re rarely a reliable guide to what you’ll actually be offered. Getting a personalised picture early is worth far more than chasing a number online.

Buying Your First Property as a Buy-to-Let

It happens, but most first-time buyer products assume you’ll live in the property. A buy-to-let as your first purchase usually needs a different mortgage, assessed against likely rental income rather than your salary — flag this from the outset, or you’ll waste time applying under the wrong assumption.

The Process, in Brief

  1. Budget honestly, based on your real income and outgoings
  2. Get a mortgage agreement in principle
  3. Find a property and make an offer
  4. Submit a full application with supporting documents
  5. Receive a formal offer once the valuation’s complete

Allow several weeks for the mortgage side, longer for conveyancing. Preparation — and someone chasing on your behalf — is what keeps a case moving. (Once your offer’s accepted, here’s what happens next.)

Costs Beyond Your Deposit

Stamp duty, valuation and arrangement fees, an optional survey, legal fees, buildings insurance, and moving costs all add up. On a £350,000 purchase, stamp duty alone could run to several thousand pounds depending on your status and the property. None are usually deal-breakers alone, but together they catch people out if they’ve only budgeted for the deposit.

Getting Started the Right Way

The most useful thing you can do before approaching a lender is get an honest picture of your income, outgoings, debt, deposit, and credit history — and understand what that actually translates to (particularly if your income doesn’t come from a straightforward salary). That’s where a whole-of-market broker earns their keep: rather than one bank’s view, we look across the market for what genuinely suits your circumstances.

Arrange a Consultation — talk through your first-time buyer options with a whole-of-market broker.

Frequently Asked Questions

How do I get a first-time buyer mortgage?

Review your finances and deposit honestly, then have a broker assess your circumstances against the wider market to identify which lenders are likely to accept you, before you apply formally.

Can I get a first-time buyer mortgage with no deposit?

True no-deposit mortgages are rare and usually need a guarantor or family security behind them. Worth discussing your specific options directly.

Can I get a first-time buyer mortgage with a guarantor?

Yes — a family member supports the mortgage through savings, property, or income, which can improve what you’re able to borrow.

What counts as a first-time buyer mortgage?

A mortgage for someone who’s never owned residential property before, anywhere. The mortgage itself works the same as any other.

Can I get a first-time buyer mortgage with no credit history?

It can be harder for some lenders to assess, even though you’ve done nothing wrong. Certain lenders are far more comfortable with thin files than others.

Who can get a first-time buyer mortgage?

Anyone who hasn’t owned before and can show sufficient income, acceptable credit, and a suitable deposit — eligibility varies meaningfully by lender.

What are first-time buyer mortgage rates based on?

Your deposit, credit profile, income, term, and the property — not the headline rate you see advertised online.

Can I get a first-time buyer mortgage with bad credit?

Possibly — it narrows your options and may affect terms, but the specifics (how recent, how serious) matter more than the label “bad credit” itself.

Can I get a first-time buyer mortgage for buy-to-let?

Yes, but it’s a different mortgage type, usually assessed on rental income rather than your salary.

Am I still a first-time buyer if I’ve inherited property or bought with someone who’s owned before?

Not always — worth clarifying your position before assuming you qualify for first-time buyer schemes or stamp duty relief.

How long does it take?

Allow several weeks between application and formal offer, plus time for conveyancing. Preparation is what keeps things moving.

What documents do I need?

Proof of income, recent bank statements, ID, and details of the property — have these ready before you apply.


Get in Touch — if you’re not sure where you stand, that’s exactly what the first conversation is for.

Written By James Blackler

James Blackler founded Oakstead Finance to give complex cases the attention they're usually denied. Based at Arding & Hobbs in Clapham Junction, he works with London buyers and homeowners whose applications need more than a standard lender checklist; complex income, tight timelines, or a structure most brokers won't take the time to get right.