Property auctions in Ireland offer a route to purchase that’s faster than traditional private treaty sales — but they come with specific mortgage requirements that catch many buyers off guard. Unlike a standard house purchase where you can take weeks to secure finance after agreeing a price, auction purchases are legally binding the moment the gavel falls. You sign contracts that same day, hand over a deposit, and must complete within 28 days.
This compressed timeline means your mortgage must be completely ready before you bid. Not approval in principle ready. Not “my broker says it’ll be fine” ready. Full loan offer issued ready.
Why Standard Mortgage Approval Doesn’t Work for Auctions
A standard approval in principle (AIP) tells you the maximum amount a lender will consider lending you. It’s based on your income, existing debts, and credit history. For a private treaty purchase, an AIP is usually enough to make an offer and negotiate — you then spend 4-8 weeks getting full approval while the sale contract is being prepared.
At auction, that 4-8 week window doesn’t exist. When you win the bidding, you’re immediately committed to:
- Signing a binding contract of sale
- Paying a deposit (typically 10% of the purchase price)
- Completing the purchase within 28 days (some auctioneers allow 42 days but 28 is standard)
If your lender takes five weeks to issue a loan offer, you’re already in breach of contract. The seller can keep your deposit and sue you for the full purchase price.
This is why you need a full mortgage approval — a formal loan offer stating the exact amount the lender will advance, subject only to final property valuation and legal review. Most Irish lenders call this a “full approval” or “loan offer.” It means underwriting is complete, income verified, and credit checks done.
Timeline: Getting Auction-Ready Finance
Working backwards from auction day, here’s the realistic timeline:
6-8 weeks before auction: Start your mortgage application. Gather three months’ payslips, P60s, bank statements for all accounts (three to six months depending on lender), proof of deposit source, and any other income documentation.
4-6 weeks before auction: Submit complete application to your lender. Incomplete applications add weeks to the process. Your lender will order a property valuation once they’ve assessed your finances.
2-3 weeks before auction: Receive loan offer. The fastest Irish lenders (AIB, Bank of Ireland, Avant Money) can turn around complete applications in two to three weeks. Others take four to six weeks or longer.
Auction day: You attend with your loan offer in hand, ready to bid. If you win, you sign contracts immediately and pay the deposit.
28 days after auction: Completion day. Your solicitor draws down the mortgage, transfers funds, and you get the keys.
This timeline assumes nothing goes wrong. Any missing documentation, credit issues, or property valuation problems add time. This is why most auction buyers start their mortgage process 8-12 weeks before the auction date.
Which Lenders Work for Auction Purchases
Not all Irish lenders move quickly enough for auction timelines. Based on 2026 processing speeds:
Fast enough (2-3 week turnaround):
- AIB: Processes complete applications quickly and has high-volume capacity
- Bank of Ireland: Fast track available for straightforward applications
- Avant Money: Digital-first approach speeds up processing significantly
Borderline (3-5 weeks):
- Haven Mortgages: Sometimes fast enough if all documentation perfect
- ICS Mortgages: Can work for 42-day completion auctions
Too slow for most auctions (5+ weeks):
- permanent tsb: Average 5-6 weeks even for simple cases
- EBS: Often 6+ weeks for full approval
- Finance Ireland: Specialist lender with longer underwriting times
These timelines assume you’re an employee with straightforward income. Self-employed applicants should add 2-4 weeks to every timeline and realistically need 12+ weeks before auction day.
The Deposit Requirement
Irish property auctions require an immediate deposit when you win. The standard amount is 10% of the purchase price, payable by bank draft or banker’s cheque (personal cheques not accepted). You hand this to the auctioneer before you leave the auction room.
Some auctioneers accept 5% deposits — always confirm before bidding. A few commercial property auctions require 20%.
This deposit must be cleared funds you can access immediately. It cannot be your mortgage drawdown. Common deposit sources:
- Savings (you’ll need statements showing the money’s been in your account for six months)
- Gift from family (requires a signed letter confirming it’s a gift, not a loan)
- Sale proceeds from another property
- Help to Buy scheme refund (if eligible as a first-time buyer)
Your lender will verify deposit source during the approval process. New money appearing in your account in the weeks before auction raises red flags and can delay or derail your application.
Understanding AMV, Reserve Price, and Bidding Strategy
Irish auction listings show an AMV (Advised Minimum Value). This is the auctioneer’s suggested guide price — not a guaranteed sale price. The property has a separate reserve price, which is the minimum the seller will accept. The reserve is confidential.
Typically, reserves are set at 85-95% of AMV. If bidding doesn’t reach the reserve, the property doesn’t sell (it’s “withdrawn”). The auctioneer may then negotiate with the highest bidder after the auction.
Your mortgage approval must cover your maximum bid plus costs. If you’re approved for €350,000 and bid €345,000, you need to ensure that leaves you enough for:
- Stamp duty (1% for first-time buyers on properties up to €1 million, otherwise 1% on first €1 million and 2% thereafter)
- Legal fees (€1,500-€2,500 typically)
- Survey costs if you commissioned one pre-auction (€400-€800)
- Mortgage valuation fee if not covered by your lender (€150-€200)
What Happens If Your Mortgage Falls Through
This is the nightmare scenario: you win at auction, sign contracts, pay your deposit, then discover your mortgage won’t complete in time. Perhaps the lender’s valuation comes in low. Perhaps your employment status changes. Perhaps there’s a title issue the lender won’t accept.
When this happens:
- You lose your 10% deposit immediately — it’s forfeited to the seller
- You’re in breach of contract and liable for the full purchase price
- The seller can resell the property and sue you for any shortfall
- If they resell for less than your bid, you owe the difference plus their legal costs and interest
- This typically amounts to 15-25% of the purchase price in total losses
Example: You bid €400,000, pay €40,000 deposit, then can’t complete. The seller resells at auction for €375,000. You’ve lost your €40,000 deposit plus you owe €25,000 (difference in price) plus the seller’s legal costs (€3,000-€5,000) plus interest. Total loss: €70,000+.
This is why you need a genuine, complete, fully-approved mortgage before bidding — not optimistic promises from a broker.
The Property Valuation Risk
Your lender will instruct a valuation surveyor to inspect the property and confirm it’s worth your bid amount. This happens after you’ve received approval in principle but before the final loan offer is issued.
At auction, timing is tight. Ideally, you arrange the valuation before auction day so it’s already done when you bid. This requires paying the valuation fee (€150-€200) upfront, even if you don’t win.
The risk: the valuer says the property is worth less than your bid. If you bid €350,000 but the valuation comes in at €330,000, your lender will only advance a mortgage based on €330,000. At 90% LTV (typical for first-time buyers), that’s a €297,000 loan instead of the €315,000 you need.
You’d have to find an extra €18,000 in cash or pull out and lose your deposit. Some buyers commission an independent survey before auction to reduce this risk, but lenders don’t always accept third-party valuations.
Auction Day Process
Here’s what actually happens when you attend:
Before bidding starts: Register with the auctioneer. They’ll want ID and proof you can complete (your mortgage loan offer letter). Some require registration deposit (€5,000-€10,000 refundable if you don’t win).
During bidding: The auctioneer starts at or below AMV. Bidding increments vary (typically €5,000-€10,000). When bidding stops, the auctioneer checks with the seller’s representative whether reserve is met.
If reserve is met: Property is “on the market” and the auctioneer seeks final bids. Gavel falls on the highest bid.
If reserve isn’t met: Property is withdrawn. The auctioneer may negotiate with highest bidder afterwards.
If you win: You’re taken to a side room immediately to sign contracts and pay deposit. You cannot leave without signing. The auctioneer’s solicitor is present. You should have your own solicitor review the contract before auction day — there’s no time for legal advice in the room.
After signing: You receive a copy of the signed contract. Your solicitor has 28 days to complete. The countdown starts that day, not the next working day.
Central Bank Rules and Auction Purchases
The same Central Bank mortgage lending rules apply to auction purchases as any other property:
- Maximum 90% LTV for first-time buyers (you need 10% deposit)
- Maximum 80% LTV for second and subsequent buyers (you need 20% deposit)
- Maximum 3.5 times gross income for most buyers
- Lenders can grant exceptions for up to 20% of first-time buyer lending and 10% of second-time buyer lending
The tight auction timeline makes exceptions harder to get. If you’re relying on a lender exception to afford your bid, you need this confirmed in writing in your loan offer before auction day. Don’t bid hoping an exception will be granted.
Cost Comparison: Auction vs Private Treaty
| Cost Item | Auction | Private Treaty |
|---|---|---|
| Purchase price | Often 5-15% below market | Market rate |
| Legal fees | €1,500-€2,500 (similar) | €1,500-€2,500 |
| Survey | €400-€800 (pay upfront, lose if you don’t win) | €400-€800 (only if bid accepted) |
| Mortgage valuation | €150-€200 (before auction ideally) | €150-€200 (after offer accepted) |
| Risk of deposit loss | High if mortgage fails | Low (subject to contract) |
| Time pressure | 28 days to complete | 8-12 weeks typical |
After You Win: The 28-Day Sprint
Winning at auction starts an intense four-week process:
Week 1: Your solicitor receives contracts from the auctioneer’s solicitor, orders title searches, and raises any queries about the property’s legal title. You arrange buildings insurance (required before drawdown).
Week 2-3: Your lender’s solicitor reviews title documents. If there are any issues (boundary disputes, planning irregularities, rights of way problems), they must be resolved quickly or your lender may withdraw.
Week 4: Final loan drawdown. Your solicitor requests mortgage funds from your lender, combines this with your remaining deposit, and transfers the full amount to the seller’s solicitor. You collect keys on completion day.
If anything goes wrong in these four weeks, you’re in breach of contract. Title issues that would derail a private treaty sale will also kill an auction purchase — but you’ve already paid your deposit and signed binding contracts.
Is Auction Buying Right for You?
Auctions suit buyers who:
- Have full mortgage approval already secured
- Can move quickly on due diligence (have solicitor review contracts pre-auction)
- Are comfortable with significant financial risk (losing 10%+ if anything goes wrong)
- Are looking for value (auction properties often sell below market)
- Don’t need to sell another property first
Auctions don’t suit buyers who:
- Haven’t started their mortgage process yet
- Are self-employed and need 12+ weeks for approval
- Need their lender to grant an exception
- Are first-time buyers with limited cash reserves beyond their deposit
- Are risk-averse
The key advantage is price — auction properties typically sell for 5-15% below equivalent private treaty sales, especially for properties that need work or have been on the market a long time. The key disadvantage is risk — if anything goes wrong, you lose significant money.
Most Irish auction buyers are cash purchasers or property investors who can absorb the risk. First-time buyers using high-LTV mortgages should approach with extreme caution. If you proceed, use an experienced mortgage broker who works with fast-track lenders and start your application at least eight weeks before auction day.
See also: Mortgage Approval in Principle Ireland | How Much Can I Borrow? | Central Bank Mortgage Rules Ireland | First-Time Buyer Mortgages Ireland | Mortgage Brokers in Ireland