UK Property Auction Intelligence
The intelligence layer for UK property auctions.
We watch the auction market. We record what actually happens. We turn it into intelligence.
BuyerSide monitors live auctions across the UK's major auction houses and builds a proprietary, bid-by-bid dataset — guide price, opening bid, every bid and timestamp, bidder count and final hammer price for every lot.
Live coverage across the UK's major auction houses
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What we capture
Every auction lot, structured field by field.
For every lot that goes under the hammer, BuyerSide records and structures the full lifecycle of the sale — not just the result.
THE LOT
Property address & characteristics
Type, size, tenure and condition
Auction house & auction date
Which room, and when
Lot number / position
Where it sits in the catalogue
THE OPENING
Guide price
What the agent published
Opening bid
Where the room actually started
THE ROOM
Every bid & timestamp
The full bidding sequence
Number of bidders
Depth of competition
Bidding intensity & velocity
How fast the price moved
THE OUTCOME
Final hammer price
What it actually sold for
Sold / unsold / withdrawn
The result, every time
Property intelligence
Every lot analysed, not just recorded.
Auction behaviour only means something next to the asset itself. BuyerSide reads every photo, floor plan and legal pack document on a lot, combines them with local market data, and turns them into structured fields you can query.
Condition & refurbishment
Heavy refurb · £48k–£72k
- Overall effort, from light cosmetic to full gut
- Refurbishment budget range, with a confidence level
- Risk flags and top findings
- Per photo: damp indicators, structural concerns, occupancy
Floor plan & layout
3 bed · 1,042 sq ft
- Bedrooms, bathrooms, WC and reception rooms
- Square feet and square metres
- Extension potential and layout opportunities
- HMO suitability and achievable bedroom count
Market & valuation
6.4% gross yield
- Price per square foot against the local market
- Rental estimate — monthly, annual, gross yield at guide
- Post-refurbishment value estimate
- Value assessment: grade, score and variance vs market
Legal & title
4 conditions flagged
- Every legal pack document categorised and summarised
- Special conditions and disclosed defects
- Tenancy status and terms
- Planning status, planning notes and access issues
Investment thesis
Flip | HMO · score 78
- Deal classification: BTL, flip, HMO, development, commercial-to-resi
- Opportunity score and model confidence
- Suggested maximum bid
- Buy reasons, avoid reasons and key due diligence
Auction estimate
Expected £350k
- Expected hammer price for the lot
- Median uplift over guide for comparable lots
- The comparable lots the estimate is drawn from
- Price bracket the lot competes in
The core asset
Price is a result. We record how it was formed.
Traditional property data tells you a property sold for £350,000. BuyerSide tells you how the room got there.
Traditional property data
SOLD PRICE
£350,000
One number. No context on how competitive the sale was, or why.
BuyerSide price-formation record
Guide
£300k
Opening bid
£250k
Bidders
5
Bids
23
Final minute
Intense
Hammer
£350k
The intelligence layer
A dataset that answers questions no single listing can.
Every lot adds another data point. Over time, the dataset lets you interrogate how the auction market actually behaves.
Which properties consistently sell above or below guide price?
How much does the guide price differ from the eventual hammer price?
Does lot position affect the final price?
Which property types attract the most competition?
Which characteristics predict a property failing to sell?
Which auction houses systematically under-guide or over-guide?
How many bidders does a given property type typically attract?
What properties appear mispriced relative to historical auction behaviour?
On the roadmap
What the dataset will predict
Who it's for
Built for professional users, first.
BuyerSide is a B2B platform. The initial focus is the professionals who price, fund and run the auction market — not retail buyers.
Bridging & development lenders
Auction-specific underwriting and valuation intelligence for facilities secured against auction stock.
Professional investors & developers
Identify mispriced opportunities and set a rational maximum bid before you enter the room.
Property-data companies
License BuyerSide's auction transaction and bidding dataset through an API.
Auction houses
Benchmarking, guide-price optimisation, demand analysis and lot sequencing.
Valuers & surveyors
Independent evidence on real-world auction pricing and liquidity to support valuations.