Seller guide · Separate the clock, the terms, and the purpose

Types of Auctions for Sellers: What Each Format Actually Means

“Type of auction” can describe how bids move, where bidders participate, whether a reserve applies, or why the property is being sold. This guide separates those choices so a seller can compare formats without assuming every auction company offers every one.

Plain-language resource

Illustrative scene. Bidding Is Open conducts timed online property auctions on HiBid and separately scopes charity and benefit auction engagements; it does not claim to offer every format shown.

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By Darrien Eouse · FL Auctioneer AU#4535Published August 21, 2026Updated September 6, 202612 min read

How Bidding Is Open sells propertyTimed online auctions on HiBid

Closing toolsStaggered closing and soft-close extensions

Seller termsAbsolute or reserve arrangements belong in writing

For a seller, four labels matter: the bidding mechanism, the participation venue, the sale terms, and the property purpose. A timed online estate auction, for example, combines a venue and clock (timed online), a property purpose (estate), and a term choice (absolute or reserve).

Bidding Is Open conducts timed online property auctions on HiBid. The live HiBid catalog controls registration, bidding, lot clocks, event terms, invoices, and live status for those sales. Charity and benefit auction work is a separate service defined by its written engagement. Other formats below are industry education, not a claim that we offer every format.

Practical checklist

The four questions behind the auction label

Ask these separately. That makes it much easier to compare an auction proposal or understand a public catalog.

How do bids move: ascending, descending, sealed, reverse, or another mechanism?
Where do bidders participate: timed online, live onsite, webcast, private submission, or a hybrid?
What sale terms apply: absolute, reserve, published minimum, maximum bidding, soft close, or staggered closing?
Why is the sale being held: consignment, estate, downsizing, liquidation, inventory reduction, benefit, or another purpose?

Step by step

Common formats, translated into seller decisions

The best format is the one that fits the property, bidder behavior, deadline, inspection needs, fulfillment, and the seller's written objectives.

Timed online auction
The catalog is open for a defined period and lots begin closing according to a published schedule. Bidders participate online rather than in a live room.
Live onsite auction
An auctioneer calls bids in real time at the property or venue. It can suit audiences and property that benefit from physical attendance and same-day movement.
Simulcast or webcast auction
A live auctioneer accepts bids from the room and online at the same time. It combines real-time calling with remote access and adds coordination complexity.
Sealed-bid process
Interested parties submit confidential bids by a deadline. The written process defines evaluation, acceptance, conditions, and whether price alone decides the outcome.
Silent or mobile-bidding auction
Often used for fundraising, bidders place written or mobile bids without a conventional live call on every lot. Benefit-auction planning is a distinct service category.

Bid mechanism

English, Dutch, sealed, reverse, and package bidding describe different markets

An English or open ascending auction is the familiar format: buyers raise one another until the highest bid remains. A Dutch auction moves the asking price downward until someone accepts. First-price sealed bids are confidential and the winner pays the submitted bid; second-price or Vickrey logic is a separate economic mechanism in which the winner's payment relates to the next-highest bid.

Reverse auctions involve competing sellers bidding downward for one buyer. Double auctions match multiple bids and asks, while combinatorial auctions allow bids on packages. Those mechanisms are useful industry context, but they are not interchangeable with a personal-property consignment auction.

Sale terms

Absolute and reserve describe whether a lot must sell

Absolute or no-reserve means the lot sells to the high bidder under the event terms. A reserve arrangement means an agreed threshold or seller condition affects whether the lot sells. Reserves can protect a selected piece, but they can also reduce participation and leave catalog work unsold.

A published opening or minimum bid is not always the same as a confidential reserve. The written consignment agreement and live event terms should state the actual arrangement. Bidding Is Open does not promise a reserve or a result through an inquiry.

Closing mechanics

Soft close and staggered closing solve different problems

Staggered closing means lots begin closing one after another rather than all at once. Soft close means a late bid extends that individual lot's clock, giving other bidders time to respond. One organizes the catalog; the other prevents a last-second bid from ending active competition.

Maximum or proxy bidding lets a bidder enter a private limit while the platform advances only as needed under its rules. On Bidding Is Open sales, the current HiBid catalog is authoritative for all live mechanics.

Property purpose

Consignment, estate, liquidation, and inventory auctions name the seller's situation

A consignment auction sells accepted property for an owner under a written agreement. Estate and downsizing auctions may involve executors, trustees, agents, families, exclusions, and reporting. Business liquidations focus on authorized equipment, fixtures, inventory, site access, and removal. Inventory-reduction sales focus on aged stock, surplus, samples, returns, counts, restrictions, and lot size.

The purpose changes the scope and documentation, not necessarily the bidding mechanism. Several of these situations can be sold through the same timed online format.

Plain-language reference

Common auction terms

Use the definition for orientation, then confirm the exact rule in the live event terms or written engagement.

Consignment auction: A sale in which accepted property is offered for an owner under a separate written agreement covering scope, terms, responsibilities, and settlement.
Absolute auction: A sale or lot that must sell to the high bidder under the published terms, without a seller reserve.
Reserve: An agreed threshold or seller condition affecting whether a lot is sold; the exact arrangement belongs in writing.
Soft close: A rule that extends an individual lot when a bid arrives near its scheduled close, allowing active competition to continue.
Staggered closing: A schedule in which lots begin closing one after another, usually in lot order, instead of simultaneously.
Maximum or proxy bid: A private bidder limit that the platform uses to bid incrementally as needed, never beyond that limit under its rules.

Pause before proceeding

Common trouble spots

A clear pause is usually cheaper than repairing a catalog, ownership, condition, privacy, safety, or logistics problem later.

Do not assume an educational format described here is a service Bidding Is Open currently offers.
Do not use “online auction,” “soft close,” “absolute,” or “reserve” without reading the actual event terms or written agreement.
Do not confuse a maximum bid with an immediate hammer price or a sealed bid.
Do not place regulated, titled, disputed, hazardous, or customer-owned property into any format before authority and transfer requirements are resolved.

Questions and answers

What people ask next

For a specific event or engagement, use the live catalog, written terms, agreement, and direct response from the responsible person.

What is a consignment auction?

It is an auction in which accepted property is sold for an owner under a separate written agreement. The agreement defines scope, services, fees, responsibilities, timing, reserves if any, unsold property, reporting, and settlement.

What type of auction does Bidding Is Open use?

Bidding Is Open conducts timed online property auctions on HiBid, with live mechanics and event rules controlled by the current HiBid catalog. Charity and benefit auction work is scoped separately for the fundraising event. Other formats on this page are industry education, not a promise that every format is offered.

What is the difference between a live and timed online auction?

A live auctioneer calls bids in real time. A timed online auction is open for a defined period and lots close according to an online schedule, often with staggered closing and late-bid extensions.

What is the difference between an estate auction and an estate sale?

An estate auction uses competitive bidding and a published closing process to determine the sale price under stated terms. An estate sale generally uses marked prices and a scheduled shopping period. Either can fit a particular estate; authority, property type, buyer market, workload, timeline, and the complete written terms should drive the choice.

What is the difference between absolute and reserve?

Absolute means the lot sells to the high bidder under the terms. A reserve arrangement means an agreed threshold or seller condition affects whether it sells. The agreement and event terms should state which applies.

Is soft close the same as staggered closing?

No. Staggered closing spaces the scheduled close of lots. Soft close extends an individual lot after a late bid so active bidders can respond.

Choose the purpose before the format

Tell us what must be sold and what decision is driving it

For a seller review, include authority, property type, volume, location, access, exclusions, records, and timing. You may attach representative photos or an inventory file directly to the private request. The preliminary appraisal and fit review do not create a sale or reserve arrangement.

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