For fast, public deal discovery, start with LoopNet. For verified comps and institutional-grade underwriting, CoStar is the tool that matters. The two platforms answer different questions: LoopNet gets you leads and listing exposure through free browsing, while CoStar requires a paid subscription and delivers the transaction data serious analysis depends on. Most professionals end up using both, in sequence, once they understand what each one actually does.
TL;DR:
- LoopNet provides free, fast access to property listings and deal leads, while CoStar offers verified transaction data for underwriting and analysis through subscription-based access.
- Most users rely on LoopNet for marketing and lead generation, then turn to CoStar for verified comps before making investment decisions.
- CoStar's pricing is quoted individually based on seats, coverage, and data modules, often involving multi-year contracts with escalation clauses, unlike LoopNet's tiered subscription model.
- Day-to-day, LoopNet focuses on market presentation and exposure, whereas CoStar delivers detailed verification, transaction history, and lease analytics that support precise valuation.
- Using both platforms sequentially allows for efficient deal sourcing and reliable data verification, but neither covers site-specific issues like zoning or infrastructure constraints.
Table of Contents
- CoStar vs LoopNet: how the platforms compare
- Getting access: pricing models and contract terms to expect
- What you actually get day to day: listings versus analytics
- Who actually uses each platform
- How to choose the right platform for your team
- Why CoStar Group owns both platforms
- How practitioners actually run this workflow
- Where the platform debate misses the point
- When a feasibility study beats another subscription
- Sources
- FAQ
CoStar vs LoopNet: how the platforms compare
LoopNet and CoStar sit at opposite ends of the same business, and CoStar Group owns both of them. LoopNet operates as a public marketplace built for listing volume and traffic, reporting about 13 million monthly global unique visitors and over one million detailed property views daily. CoStar operates as the analytics layer behind that marketplace, selling verified comps and market data to subscribers who need more than a listing photo and a broker's phone number.
| Dimension | CoStar | LoopNet |
|---|---|---|
| Best for | Institutional research, verified comps, underwriting | Deal discovery, listing exposure, tenant searches |
| Pricing/access model | Quote-based subscription, seat and geography pricing | Free browsing; paid ad and listing upgrade tiers |
| Primary data type | Verified transaction comps, lease analytics, market data | Public property listings and marketing content |
| Typical users | Appraisers, institutional investors, researchers | Brokers, tenants, small investors |
| Standout capability | Proprietary transaction data and enterprise APIs | Mass-traffic marketplace with promotional upgrades |
A few user profiles make the choice easier to reason through:
- Brokers listing space get the most value from LoopNet's marketing tools and its large buyer and tenant audience.
- Institutional investors and appraisers need CoStar's verified comps, since a public listing price rarely reflects the closed transaction terms.
- Asset managers tracking a portfolio typically pay for CoStar to watch lease rollover and market rent trends across markets.
Many due diligence processes run through both platforms in sequence: LoopNet to surface candidates, CoStar to confirm the numbers before anyone signs anything.
Getting access: pricing models and contract terms to expect
LoopNet's entry point is free. Anyone can browse listings, and property owners or brokers pay only when they want more visibility. The LoopNet network sells subscription-based ad packages and listing upgrade tiers, branded Silver, Gold, Platinum, and Diamond, that push a listing higher in search results and add marketing features.
CoStar works differently. There is no public price list: subscriptions are quoted individually based on seat count, geographic coverage, and the data modules a firm needs. Industry reporting indicates that CoStar pricing commonly involves multi-year contracts with annual fee escalators, a structure closer to enterprise software procurement than a typical SaaS signup.
- Before a demo, list the specific markets and property types you need covered, since geography drives price.
- During negotiation, ask what happens to price at renewal, not just at signing.
- Before committing seats, confirm whether a "seat" means a named user or a shared login.
Pro Tip: Ask for a sample data export during any CoStar trial. If the sales rep hesitates, treat that as a signal about how the contract will handle exports later.
What you actually get day to day: listings versus analytics
LoopNet's day-to-day value is marketing and exposure. It gives brokers photo galleries, marketing collateral, broker contact tools, and paid upgrade options that push a listing in front of more buyers and tenants. It is built to move a property, not to model its value.
CoStar's day-to-day value is data depth. Subscribers get verified comps, transaction history, lease analytics, mapping tools, and in many cases API or data licensing for feeding numbers into internal models.
- LoopNet shows you what is on the market and how sellers are positioning it.
- CoStar shows you what similar properties actually sold or leased for, verified against source documents rather than self-reported listing prices.
- Data depth matters for valuation accuracy: an asking price on a public listing site is a starting point, not a comp.
That gap in verification is the reason appraisers and institutional underwriters treat CoStar as the primary reference and LoopNet as a lead source rather than a data source.
Who actually uses each platform
The roles that gravitate to each platform reflect what the tool is built to do.
- Tenants and small investors use LoopNet to browse available space without needing a subscription.
- Brokers use LoopNet to market listings and generate inbound interest, then lean on relationships and CoStar data to close deals.
- Institutional investors and appraisers use CoStar for verified comps and lease analytics when underwriting a purchase or valuing a portfolio.
- Combined workflow: discovery on LoopNet, initial vetting against public records, then final underwriting on CoStar-verified comps before anything reaches an investment committee.
How to choose the right platform for your team
Start with the job, not the brand name. A leasing broker chasing tenant inquiries has a different problem than an acquisitions analyst building a comp set for a committee memo. Budget, team size, and geographic coverage all shift the answer, along with whether you need API exports or just a browser view.
- Job to be done: discovery and marketing point to LoopNet; underwriting and comps point to CoStar.
- Team size and budget: a two-person shop may rely on LoopNet and selective paid reports rather than a full CoStar seat count.
- Data verification needs: if a number is going into an investment memo, ask how it was sourced.
Bring specific questions to any sales call: how often is the data refreshed, can you see a sample comp before committing, what export formats are supported, how is a "seat" defined, and what is the contract length and escalation clause. Inflexible multi-year terms, no export options, or vague answers about where the comps come from are all reasons to slow down.
Pro Tip: Ask the CoStar rep to walk through one comp end to end, from the raw transaction record to the number in the platform. If they can't explain the provenance, keep asking.
Why CoStar Group owns both platforms
CoStar Group owns LoopNet, and the two products are deliberately different layers of the same business. LoopNet is the public marketplace and lead-generation engine, while CoStar is the paid analytics product built on verified data. That corporate structure shapes how features and data get bundled into contracts, and it explains why LoopNet stays free for browsing while the deeper data sits behind a CoStar subscription.
How practitioners actually run this workflow
Most acquisitions teams treat this as a two-step process. LoopNet handles lead generation, surfacing whatever is publicly listed in a target market. CoStar then handles verification, cross-checking asking prices against actual closed comps before anyone commits capital. Large firms tend to underwrite the CoStar subscription as a fixed cost of doing business, while smaller firms lean on LoopNet plus selective paid reports.
Experienced deal teams use LoopNet to surface leads quickly but always obtain primary documentation, rent rolls, leases, and executed comps, from brokers or public records before presenting to investment committees.
Broker-submitted listings on LoopNet reflect what a seller wants, not necessarily what the market will bear.
Where the platform debate misses the point
The CoStar versus LoopNet question gets treated like a single either/or decision, and that framing wastes time. They solve different problems, and most serious workflows use both: LoopNet for reach, CoStar for verification. The bigger mistake is not picking the wrong platform, it's assuming platform access alone answers questions about a specific parcel.
Neither tool tells you whether a site's zoning will actually support the density you're underwriting, whether utility capacity exists at the property line, or what entitlement risk looks like for your particular jurisdiction. That's not a data gap either platform is built to close, and no amount of comp verification substitutes for a site-specific review of what the land can legally and physically support.
The procurement traps matter too. Opaque CoStar pricing and multi-year escalator clauses catch teams that treat a subscription decision like a software purchase instead of an enterprise contract negotiation. Ask the hard questions before signing, not after the first renewal notice arrives.
— Jeremy Wenger
When a feasibility study beats another subscription
Market data tells you what other properties sold for. It does not tell you what your specific parcel can legally and physically become, and that gap is where a platform subscription stops being useful. When the real question is zoning capacity, infrastructure constraints, or entitlement risk on one site, a feasibility study from Urban Planning Pros answers it directly instead of leaving you to infer it from comps.
Our services cover the ground a listing platform never touches:
- Feasibility studies that evaluate zoning, market direction, and site constraints before you commit capital.
- Master land planning for owners shaping a parcel's long-term development strategy.
- Surveying services that ground your due diligence in verified site conditions rather than assumptions.
- Development strategy support for owners and developers navigating entitlement and approvals.
If your next decision depends on what a specific site can achieve, not just what similar ones sold for, start with our feasibility studies page.
Sources
- LoopNet | CoStar Group
- SEC filing / CoStar Group — LoopNet network and listing/ad package descriptions
- PitchBook
FAQ
How much does CoStar cost per month?
CoStar does not publish a flat monthly price. Subscriptions are quote-based and vary by seat count, geographic coverage, and the data modules included, and industry reporting notes that contracts commonly run multiple years with annual fee escalators.
What's better than LoopNet for institutional data?
For verified comps, lease analytics, and transaction history, CoStar is the stronger option since it's built on proprietary, verified data rather than public listings. For site-specific feasibility and entitlement questions that neither platform covers, a consultant-led feasibility study fills the gap instead.
Does CoStar own LoopNet?
Yes, LoopNet operates as a brand within CoStar Group, the same parent company that owns CoStar. LoopNet functions as the public marketplace side of the business while CoStar delivers the paid analytics and comp data.
Who competes with CoStar?
CoStar competes with other commercial real estate data and analytics providers that offer market comps, transaction records, and research tools to institutional buyers. The competitive set shifts by region and data type, so the right comparison depends on which specific analytics or coverage area you need.