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Hammerstone Bid helps you research UK property auctions before you bid — track lots, classify postcodes, study past sale prices, and work out a sensible maximum bid. Seed data and map defaults are London-focused for now; you can add listings anywhere. Everything starts empty — head to Shortlist to add the first lot you're researching.
Track an auction lot you're researching.
| Address | Postcode desirability | Beds | Sqm | Floor | Garden? | Years | Auctioneer | Auction Date | Lot | Guide | Interest | Actions |
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Showing 0 properties
Showing 0 properties
| Ref | Address | Guide | Sqm | Lease | Title | Searches | Svc Chg | Mgmt | EWS1 | Special | Overall | Notes |
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Colour-coded postcodes by desirability tier (High / Medium / Low / Unclassified).
Drag and drop postcodes to classify them by desirability. This affects the "Postcode desirability" column in Shortlist.
Properties with viewing slots you haven't scheduled yet. Click a slot to book it.
Log a viewing slot or scheduled viewing.
| Ref | Auctioneer | Auction date | Viewing date | Time | Completed? | Address | Guide | Lot | Actions |
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Add your solicitor, surveyor, or other contacts.
| Firm | Contact | Auction Month | Status | Quoted cost | Actions |
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Data management utilities for cleaning up old data
Paste a JSON array of rows to bulk-add records. The whole batch is validated before anything is imported.
All current lots mirrored from the auction houses via AuctionClear. Filter, then promote the lots you want to track into Shortlist. Reads the shared mirror only — never the source database.
Timestamped max-bid picks, logged before the hammer falls. Picks are permanent and cannot be edited or deleted — a revision is a new pick that supersedes the old one, and the full chain stays visible. This is the record of what we called, when.
Picks are permanent and cannot be edited or deleted. Revisions are logged as new picks.
Your shortlisted lots whose auctions have taken place, shown here automatically — they stay in your Shortlist data (also reachable there via “Show past”), and nothing is ever moved or deleted. Realised prices appear alongside once results reconcile in.
Analyse how flats sell relative to guide price. Use filters to narrow by location, auction house, and date.
| ID | Postcode | Auction House | Month | Beds | Guide (£) | Sale (£) | Status | Ratio | sqm | £/sqm | Lease | URL | Actions |
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Shows how many entries you have logged per auction house per month.
Click a postcode to filter the analysis table.
Every forward-log pick, joined to its realised auction outcome via the date-qualified seam. The latest pick in each supersede chain is operative and scored; earlier links show greyed and are never scored. Guide of record is the pick’s guide-as-seen (outcome docs carry no guide).
Selected lots, worked up before the hammer falls. Pick a lot on the left; work up its max bid on the right. Confirming a bid writes a permanent Forward Log pick. Add lots from Shortlist → Tracker via “Select for bidding”.
Calculate the maximum sensible bid for each property based on its post-renovation market value.
Max Bid = Market Value × (1 - Profit Margin) - Renovation Costs - SDLT - Other Costs
Enter the Market Value Estimate for each property based on local comparables for similar renovated flats in the area.
| Ref | Address | Guide | Sqm | Market Value (£) | Reno Level | Reno Cost (£) | SDLT (£) | Other Costs (£) | Calculated Max (£) |
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Given a purchase price, this tool calculates your total costs and monthly payments across the bridging and mortgage phases. Select a property to auto-populate with its Calculated Max from Value Calc.
Quick reference for auction day. Properties are sorted by lot number within each auction session.
The Calculated Max comes from the Value Calc tab (Standard 20% margin). Set your My Max Bid – this is your hard limit on the day.