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EAV attribute system
Flexible, no-code control over structured data, categories,
Flexible, no-code control over structured data, categories,
EAV attribute system
What Is the BidHarvest® Attribute System?
We’ve built and infinitely flexible data model that allows you to define an unlimited number of custom fields for lots, based on the category or asset type.
In BidHarvest®, this means:
- You can define categories and subcategories
- Create attributes (e.g. engine size, dimensions, EPC rating, artist)
- Define attribute values (e.g. Diesel, 2020, Freehold, Acrylic)
- Group attributes into attribute sets that can be applied to categories
It’s all managed using our intuitive Attribute Manager, so your admin team can maintain control without relying on developers or custom builds.
Tailor Your Lot Structure to Every Vertical
Each auction vertical has its own data needs and the BidHarvest® attribute manager supports them all:
- Vehicles & Plant: Fuel type, mileage, transmission, weight
- Salvage & Breakers: Insurance category, damage type, dismantling suitability
- Property: EPC rating, tenure, planning status, council tax band
- Fine Art & Collectables: Artist, medium, period, provenance
Attributes can be configured per category, so you only display what’s relevant to each lot type and attribute sets can be applied to multiple categories so no need for duplication.
Manage Everything from Admin, No Developers Required
Your admin team can:
- Create new categories and subcategories
- Build and assign attribute sets per category
- Add, edit, and delete attributes and value lists
- Set attributes as required, optional, or filterable
- Toggle attributes as active/inactive without breaking catalogue structure
All of this happens inside the BidHarvest® interface with no technical input needed.
Enable Smart Filtering for Buyers
Any attribute marked as filterable becomes part of your front-end filtering tools, allowing bidders to quickly refine lot displays.
Example:
A buyer searching for a 2020+ diesel Transit van with under 80k miles can apply filters and see only relevant lots, no need to dig through irrelevant results.
This improves buyer experience, reduces abandonment, and shortens the path to bidding.
Boost SEO and AI Visibility with Structured Attribute Data
BidHarvest® doesn’t just help you catalogue better it helps you get found more often.
Every attribute you create using the attribute manager is stored in a structured data schema, which can be output as part of your public-facing auction catalogue in a way that search engines and AI crawlers can read, understand, and index more effectively.
That means:
- Better visibility in Google Search, especially for long-tail and product-specific queries (e.g. “John Deere 6155R tractor for sale with front loader”)
- Improved placement in Google Shopping or Discover, when product-rich schema is detected
- Enhanced indexing by AI-powered search tools, including ChatGPT-style bots and vertical AI agents crawling the web for real-time auction listings
- Stronger alignment with Schema.org standards, making your lots eligible for rich snippets, filters, and auction-specific enhancements in SERPs
The structured attribute data also provides better internal site search accuracy and enables dynamic filter-based SEO landing pages (e.g. /auctions/vehicles/diesel-under-80k-miles) that can be automatically generated from popular search and browse paths.
Why This Matters for Auctioneers
Bidders are increasingly finding auctions through organic search, AI-based product matching, and marketplace scrapers. If your lots aren’t marked up with clean, structured, machine-readable data they won’t be surfaced.
By using BidHarvest’s® Attribute Manager to define and organise your lot data, you’re not just helping bidders find what they want on your site, you’re helping search engines and AI models understand what you’re selling in real time.
This turns every auction listing into a high-performing digital asset.
Why Auctioneers Love It
- Structure any data type — tailor fields to match your stock
- Fully admin-controlled — update without waiting for developers
- Bidding-ready filters — show buyers exactly what they want
- Easy to evolve — adapt attribute sets as your auctions grow
- Supports reporting, filtering and SEO — all from structured lot data
BidHarvest’s® attribute manager gives you total flexibility over how data flows through your catalogue, listings, filters, and post-sale reports, giving you a professional, scalable, and future-ready foundation for any auction type.
When your auctions span a wide range of categories from vehicles and property to salvage or fine art, flexibility in how you structure and present data becomes essential. BidHarvest® solves this with a powerful, user-friendly system that allows you to define, manage, and apply custom data fields to your lots, without a single line of code.
We’re still working on this content and it’s not quite ready yet — but if you’re interested in this feature, we’d love to hear from you! Please get in touch and we’ll be happy to share more details or keep you updated as soon as it’s available.
Frequently Asked Questions
Absolutely — sets can be cloned, renamed, and adapted for similar verticals or subcategories, saving setup time.
Yes — you can enable any attribute as a filter, which will then appear on the website or front-end catalogue view.
Yes — you can define whether an attribute must be completed before the lot is published or sent live.
No — attributes are grouped into sets and assigned per category or subcategory. Only the relevant fields are shown for each lot type.
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