Buying Property at Auction UK — Complete Guide

Property auctions can offer opportunities — but carry significant risks. Here’s what you need to know before bidding.

How Property Auctions Work

The Process

Stage	What Happens
Catalogue released	3-4 weeks before auction
View properties	Arrange viewings
Review legal pack	Essential due diligence
Arrange finance	Must be in place before
Auction day	Bidding happens
If you win	Pay 10% deposit, exchange immediately
Completion	28 days (usually)

Types of Auction

Type	How It Works
Traditional (unconditional)	Exchange on fall of hammer
Modern/Conditional	28 days to exchange, 28 more to complete
Online timed	Bidding over set period

Exchange on Auction Day

When Hammer Falls	Immediately
Contract exchanged	Legally binding
Deposit due	10%
Completion deadline	Set (usually 28 days)
Can’t withdraw	At all

Before the Auction

Research the Property

Check	Why
Location/area	Value drivers
Comparable sales	What’s it worth
Why sold at auction	Problems?
Guide price	Not value — often lower

What’s in a Legal Pack

Document	Check For
Title documents	Ownership, boundaries
Searches	Local authority, environmental
Lease (if leasehold)	Length, restrictions, ground rent
Special conditions	Unusual requirements
Property information form	Seller’s disclosures

Getting Professional Advice

Professional	Why Needed
Solicitor	Review legal pack before bidding
Surveyor	Survey BEFORE auction
Mortgage broker	Finance arranged in advance
Cost	Worth it to avoid disaster

Survey Before Auction

Type	Cost
Homebuyer report	£300-500
Building survey	£500-800+
Essential	For auction properties
Risk	No survey = nasty surprises

Finance Arrangements

Options

Finance Type	Suitability
Cash	Best position
Mortgage	Must be ready to complete
Bridging loan	Short-term, higher cost
Combination	Common approach

Mortgage Challenges

Issue	Detail
Speed	Must complete in 28 days
Valuation	May not match bid
Property condition	May be unmortgageable
Down valuation	Lender values less

Mortgage Agreement in Principle

Get This	Before Auction
AIP from lender	Shows you can borrow
For amount	Higher than expected bid
Note	AIP not guaranteed

Bridging Finance

Feature	Detail
Purpose	Short-term loan
Speed	Fast to arrange
Cost	Higher interest (1-2% monthly)
Exit strategy	How you’ll repay
Common use	Buy at auction, refinance after

On Auction Day

Before Bidding

Checklist	Done?
Legal pack reviewed	☐
Survey completed	☐
Finance confirmed	☐
Maximum bid decided	☐
ID and deposit ready	☐

Bidding Strategy

Tip	Why
Set maximum	And stick to it
Don’t get emotional	Easy to overbid
Watch others	Understand competition
Stay calm	Auction excitement is dangerous
Be prepared to walk	If exceeds max

If You Win

Action	Required
Pay deposit	10% immediately
Sign contracts	Exchange happens
Completion date	Usually 28 days
No withdrawal	Legally committed

Costs to Budget

At Auction

Cost	Amount
Deposit	10% of winning bid
Buyer’s premium	0-2% (some auctions)
Admin fee	£500-1,500

After Auction

Cost	Amount
Balance	90% on completion
Stamp duty	As normal
Legal fees	£1,000-2,000
Survey	Already paid (before)

Financial Summary Example

£200,000 Purchase	Cost
Deposit (10%)	£20,000
Buyer’s premium (2%)	£4,000
Admin fee	£1,000
Legal fees	£1,500
Survey	£500
Stamp duty	£1,500
On auction day	£26,500
On completion	£180,000 + SDLT

Risks and Problems

Common Issues

Risk	Consequence
Hidden defects	Costly repairs
Short lease	Expensive to extend
Structural problems	Unmortgageable
Title issues	Complications
Access rights	Disputes

Properties to Be Cautious About

Red Flag	Issue
Subsidence	Major structural
Japanese knotweed	Costly, affects mortgage
Very short lease	80 years or less = expensive
Restrictive covenants	Limit use
Sitting tenants	Can’t get possession
No legal pack	Unusual, risky

If You Can’t Complete

Consequence	Impact
Lose deposit	10% gone
Re-auction costs	Seller may claim
Price difference	If sells for less
Legal costs	Both parties
Serious	Financial disaster

Types of Auction Properties

Why Properties Go to Auction

Reason	Implication
Quick sale needed	Motivated seller
Probate	Executors want certainty
Repossession	Lender selling
Unusual property	Hard to sell normally
Problem property	Defects, legal issues
Investment	BTL portfolios

Good Opportunities

Type	Potential
Probate sales	Often below market
Tired decoration	Cosmetic work only
Executors need certainty	Reasonable prices
Empty properties	Development potential

Bad Opportunities

Type	Risk
No legal pack	Unknown
Structural issues	Expensive
Short leases (under 80 years)	Costly to extend
Sitting tenants	Can’t use

Guide Prices and Reserve Prices

Understanding Prices

Term	Meaning
Guide price	Marketing price (often low)
Reserve price	Minimum seller accepts (secret)
Sold	At or above reserve
Withdrawn	Didn’t meet reserve

Guide Price Reality

Guide Price	Actual Sale
Marketing tool	To attract interest
Often low	Actual bids higher
Not valuation	Don’t rely on it
Research	Comparable sales

Modern Auction Method

How It Differs

Traditional	Modern
Exchange on day	28 days to exchange
10% deposit	Reservation fee (non-refundable)
28 days to complete	28 more days
Immediate commitment	More time

Modern Method Timeline

Stage	Timeframe
Winning bid	Day 0
Reservation fee	Immediately (£3,000-10,000)
Exchange	Within 28 days
Completion	28 days after exchange

When Modern Method Suits

Situation	Consider Modern
Need mortgage	More time
Need full survey	Time to arrange
Auction novice	Less pressure
Still binding	Don’t assume you can withdraw

Summary

Before Auction Checklist

Action	Done?
View property	☐
Get legal pack	☐
Solicitor reviews pack	☐
Survey completed	☐
Finance arranged	☐
Set maximum bid	☐
Understand risks	☐
ID and bank details ready	☐

Key Rules

Rule	Why
Set maximum bid	Don’t exceed
Get survey first	Or walk away
Review legal pack	Non-negotiable
Arrange finance	Before bidding
Emotional detachment	It’s business

Costs Summary

On Day	10% deposit + fees
Within 28 days	90% balance + SDLT
Budget for	15% total at completion

Go/No-Go Decision

Don’t Bid If
Not reviewed legal pack	Too risky
No survey	Unknown condition
Finance uncertain	Can’t risk it
Would be maximum budget	No contingency