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How Much Deposit Do You Need to Buy a House in Northern Ireland?

Last updated: 29 April 2026

How much deposit do you actually need to buy in Northern Ireland?

Most first-time buyers in Northern Ireland put down between 5% and 10% of the property price as a deposit. Through Co-Ownership with certain lenders (currently AIB NI), some buyers get on the ladder with no deposit at all on properties up to £210,000. With the average NI house price around £196,000, that works out at roughly £9,800 to £19,600 for a standard 5–10% deposit — substantially less than buyers in most of Great Britain.

This guide gives you the real numbers: typical deposits at every LTV bracket, when 5% works and when it doesn’t, how Co-Ownership can change the maths entirely, and what gifted deposits look like in practice.

If you’d rather just talk through your specific deposit position with someone, book a free initial chat and we’ll work it out together.

The headline numbers for NI in 2026

Typical first-time buyer deposit: 5–10% of the property price
NI average house price: ~£196,000 (Land & Property Services)
5% deposit on the average NI home: ~£9,800
10% deposit on the average NI home: ~£19,600
Best rate bands: usually start at 15% deposit, with the most competitive rates at 25%+
Co-Ownership zero-deposit option: available through AIB NI, on properties up to £210,000
Gifted deposits: accepted by most lenders with a signed gift letter

NI deposits go further than they would in most of England or the South East. The flip side: lenders, valuations and the buying process are all just as rigorous here — having the right deposit isn’t the only thing that matters.

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

What does each deposit level actually unlock?

Deposit size determines your loan-to-value (LTV) ratio. Lower LTV (bigger deposit) usually means access to more lenders and better rates. Here’s the practical breakdown for NI buyers:

5% deposit (95% LTV)

Possible, but a smaller pool of lenders and the highest rates available. Stress tests are tougher at 95% LTV. You’ll need a clean credit file and stable income. Read our dedicated 5% deposit mortgages NI guide for the full picture on which lenders work in NI at this level.

10% deposit (90% LTV)

The market opens up significantly. Most mainstream lenders compete here. This is the most common bracket for NI first-time buyers and the rates are noticeably better than 95% LTV.

15% deposit (85% LTV)

The first “better rate” tier. Lenders see you as substantially lower risk. If you can stretch from 10% to 15%, the rate improvement usually pays for itself within the first fixed-rate period.

25% deposit (75% LTV)

You’re now into the best rates mainstream lenders offer. Ideal if you’re remortgaging or have built equity, but rare for first-time buyers.

40%+ deposit (60% LTV)

The absolute best rates available. Almost exclusively territory for movers with substantial equity or cash buyers using a small mortgage for flexibility.

Run the numbers at different deposit levels using our mortgage calculator to see how the monthly payment changes.

Deposit examples at typical NI price points

Here’s what 5%, 10% and 15% deposits look like at a few common NI price points.

£150,000 home

5% deposit: £7,500 (mortgage £142,500)
10% deposit: £15,000 (mortgage £135,000)
15% deposit: £22,500 (mortgage £127,500)

£180,000 home

5% deposit: £9,000 (mortgage £171,000)
10% deposit: £18,000 (mortgage £162,000)
15% deposit: £27,000 (mortgage £153,000)

£220,000 home

5% deposit: £11,000 (mortgage £209,000)
10% deposit: £22,000 (mortgage £198,000)
15% deposit: £33,000 (mortgage £187,000)

£260,000 home

5% deposit: £13,000 (mortgage £247,000)
10% deposit: £26,000 (mortgage £234,000)
15% deposit: £39,000 (mortgage £221,000)

These are deposit-only figures. You’ll also need to budget for solicitor fees, surveys, removal costs and a buffer for the first month — see our hub guide on the full cost of buying in NI for the complete picture.

The Co-Ownership zero-deposit route

Co-Ownership Northern Ireland is the flagship NI shared-ownership scheme. You buy a share of the property (typically 50–90%), Co-Ownership owns the rest, and you pay rent on their share at a regulated rate.

March 2025 brought £153m in fresh government funding for Co-Ownership, supporting around 4,000 homes over four years. AIB NI launched a no-deposit Co-Ownership mortgage in April 2025 — meaning some buyers can now get on the ladder with zero personal deposit.

The key facts:

Property price cap: £210,000
Application fee: £100
Survey/legal fee on success: £575
Lenders offering Co-Ownership mortgages: AIB, Danske Bank, Progressive Building Society
Zero-deposit option: currently AIB NI

Co-Ownership isn’t the right answer for everyone, but if you can’t yet save a 5–10% deposit, it’s the most realistic route onto the ladder in NI — and it’s specifically funded for that purpose.

Read our full Co-Ownership NI guide for the eligibility detail, application process and how to compare a Co-Ownership purchase against buying outright.

Gifted deposits: how they work in practice

Around a third of UK first-time buyers now use family help in some form. NI is no different. Most lenders accept gifted deposits from close family with three things in place:

A signed gift letter from the giver, confirming it’s a gift not a loan, with no expectation of repayment and no claim on the property.
Photo ID for the giver — usually passport or driving licence.
Proof of source of funds for the giver — typically bank statements showing where the money came from. Lenders need to satisfy anti-money-laundering rules.

What lenders generally won’t accept:

Loans from family disguised as gifts (the lender will ask)
Gifts from non-family sources (employers, friends, colleagues) without specific lender approval
Money that’s only just landed in your account before application without a clear paper trail

If a parent or grandparent is gifting you a deposit, get the paperwork ready early. The lender will want to see it before they’ll progress your application.

Deposit FAQs (Northern Ireland)

What's the minimum deposit for a first-time buyer in Northern Ireland?
Most NI first-time buyers put down 5–10% of the property price. On the average NI home (~£196,000) that’s £9,800 to £19,600. With Co-Ownership through AIB NI, some buyers can now buy with no deposit at all on properties up to £210,000.
Can I get a mortgage in NI with a 5% deposit?
Yes, but with caveats. A handful of mainstream lenders take 5% deposits in NI, with stricter affordability checks and higher rates than 10%+ deposits get. Your credit file needs to be clean and your income stable. Read our full 5% deposit mortgages NI guide for the lender-by-lender picture.
Should I wait to save a 10% deposit instead of buying at 5%?
It depends on the gap. If 10% would unlock noticeably better rates and you can save the difference within 6–12 months without missing the property you want, it’s usually worth waiting. If prices in your target area are rising faster than you can save, buying at 5% can make more sense. A 30-minute conversation will give you a clearer answer than any rule of thumb.
Can my parents help me with a deposit?
Yes. Most lenders accept gifts from close family with a signed gift letter, the giver’s ID and proof of where the money came from. The lender will need all three before progressing your application. Loans dressed up as gifts will be spotted and refused.
Is there a way to buy a home in NI with no deposit at all?
Through Co-Ownership Northern Ireland with AIB NI, some buyers can now buy with no personal deposit on properties up to £210,000. You buy a share with a mortgage, Co-Ownership owns the rest, you pay rent on their share. It’s the only mainstream zero-deposit route in NI right now.
Does a bigger deposit increase how much I can borrow?
It can do, indirectly. Lenders prefer larger deposits because the loan is lower risk, which can mean a slightly higher income multiple in some cases. The bigger effect is on rate: a 15% deposit usually unlocks noticeably better rates than 5%, lowering your monthly payment and freeing up affordability headroom.
Is it ever worth using deposit money to clear debt instead?
It can be — if you’ve saved hard for the deposit but unsecured debt is dragging your affordability calculations. A car loan or credit card balance reduces what lenders will lend you. Sometimes clearing debt with £5,000 of your deposit improves your borrowing range by more than £5,000. It’s case-by-case and worth a conversation before you decide.
Will I need a bigger deposit if I have bad credit?
Probably yes. Some lenders apply higher minimum deposit requirements (often 10%+) where there’s recent adverse credit on file, and some won’t lend at all in those circumstances. The right answer depends on the type and recency of the issue. Speak to an adviser before you assume one way or the other.

Find out what your deposit can do

Numbers are useful, but the question that actually matters is: what can your deposit unlock for your situation? Income, credit, employment, where you want to buy — it all changes the maths.

Book a free initial chat →

30 minutes. No obligation. You’ll come away with a clear borrowing range, a realistic deposit plan and a sense of which lenders fit.

Or call 028 9066 5544. Or email office@crawfordmulholland.com.

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