LoopNet alternative, compared line by line

$0 Free

To list, search, and hear from buyers. For brokers, and for owners selling or leasing their own property.

Selling your own building? List it yourself, free. No broker needed.

6-month minimum^1,2,4

Gold, Platinum, and Diamond ads run at least six months, then renew monthly unless cancelled 14 days ahead. Prices are not published, and CoStar reports the average price per listing rose in 2025.

Cost to list: Paid ad packages¹
Who sees a free listing: CoStar subscribers^1,2
Search ranking: Sold by tier^1,2
Searching and managing listings: No listed connector³
AI discovery: Bots not allowed²

LoopNet sells exposure. Its own FAQ says you cannot list there for free, and paid tiers decide who ranks first. On SPACEXPLORATION, brokers and owners list free, every listing ranks by the same rules, and AI assistants can find it.

Compiled October 14, 2026

Listing a property

Cost to list

No listing fee, no subscription, and no paid tiers, for brokers and owners alike.

Paid ad packages¹

Its FAQ says you cannot list properties on LoopNet for free. Owners and brokers alike go through its ad sales.

Who sees a free listing

Everyone

Public on the web, on the map, and to AI assistants. Nobody needs an account to see it.

CoStar subscribers^1,2

A free listing appears on CoStar, which requires a subscription to view, until it is upgraded to a paid one.

Search ranking

Same rules for every listing

Results sort newest first, or by the sort the searcher picks. Nobody pays to rank higher.

Sold by tier^1,2

Diamond ranks 1st, Platinum 2nd, Gold 3rd, Silver 4th. Its terms add that an advertiser who pays more may sort higher.

AI assistants

Searching and managing listings

Claude, ChatGPT, Grok Bot, OpenClaw, and more

Ask your AI assistant to search listings, no account needed. Sign in through it, and it can create, update, and publish your listings too.

No listed connector³

LoopNet is not in the MCP Registry, a public directory of AI assistant connectors.

AI discovery

Open to AI

AI assistants are welcome to read every public listing, so a property can show up in their answers.

Bots not allowed²

Its terms forbid bots and automated tools from copying the site.

What you pay

$0 Free

To list, search, and hear from buyers. For brokers, and for owners selling or leasing their own property.

6-month minimum^1,2,4

Gold, Platinum, and Diamond ads run at least six months, then renew monthly unless cancelled 14 days ahead. Prices are not published, and CoStar reports the average price per listing rose in 2025.

Built in, free with an account

An AI assistant that lists it for you.

Hand it a flyer and it drafts your listing, changes it when you ask, and publishes when you confirm.

Drop in photos or documents, and it adds them to the listing.
Ask about any property: flood risk, nearby hazards, and the area.

Using Claude or ChatGPT? Connect it

Join free, and bring your AI assistant.

For people

Brokers, owners selling or leasing their own property, buyers, and tenants. An account lets you list property, save searches, and get an email when a new listing matches.

Create a free account List a property

For your AI assistant

Connect Claude, ChatGPT, Grok Bot, OpenClaw, or another AI assistant. Ask it to find property in plain English, no account needed, or sign in through it to create and manage your listings.

Connect your AI assistant

Adding it by hand? Paste this connector address:

https://spacexploration.com/mcp

SPACEXPLORATION vs. LoopNet®