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Real Estate · head to head

CoStar vs Rent Manager

CoStar logo

CoStar

Real Estate

Commercial real estate data subscription with strict per-seat licensing, sold on multi-year contracts and enforced through active anti-piracy litigation against password sharing

From
On request
Rated
-
Full reviewWebsite
Rent Manager logo

Rent Manager

Real Estate

Property management for mixed portfolios, with on-premises deployment and built-in telephony

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CoStar per-seat licensing with no published rate makes budgeting for headcount growth unpredictable, since adding users typically requires a new negotiation rather than a self-service upgrade.; Rent Manager the interface is dense and dated relative to newer cloud products, so onboarding site staff takes longer and training costs are real.
  • They diverge on capability: CoStar covers Property and ownership records, Rent Manager covers Mixed portfolio support.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which CoStar and Rent Manager actually diverge.

Attributes where CoStar and Rent Manager differ
AttributeCoStarRent Manager
PlatformsWebWeb, Windows, iOS, Android

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Real Estate).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in CoStar

  • Property and ownership records
  • Lease and sales comparables
  • Tenant and space data
  • Market analytics
  • STR hospitality data
  • CoStar Real Estate Manager

Only in Rent Manager

  • Mixed portfolio support
  • On-premises or hosted
  • rmVoIP telephony
  • Report writer
  • Open API
  • Owner portals

What people use each for

The jobs each tool is most often brought in to do.

CoStar

  • A commercial brokerage needing lease and sales comparables to support underwriting and pitch materialsnot Rent Manager
  • An institutional investor or lender wanting standardised market analytics across submarkets for portfolio decisionsnot Rent Manager
  • A corporate real estate team needing lease administration through CoStar Real Estate Managernot Rent Manager
  • An appraiser needing sourced, defensible comparable transaction data for valuation reportsnot Rent Manager

Rent Manager

  • A regional operator with apartments, retail and self-storage that wants one general ledger across all of themnot CoStar
  • An organisation whose data policy or insurer requires tenant and financial data to stay on its own serversnot CoStar
  • A management company running an in-house call centre that wants calls attached to tenant recordsnot CoStar
  • A third-party manager that needs owner statements and distributions without a bolt-on accounting productnot CoStar

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

CoStar

  • Per-seat licensing with no published rate makes budgeting for headcount growth unpredictable, since adding users typically requires a new negotiation rather than a self-service upgrade.
  • CoStar actively pursues legal action against password sharing and unauthorised access, which is a genuine compliance and litigation risk for a firm that is loose about login discipline, intentionally or not.
  • A June 2026 antitrust lawsuit names CoStar alongside major brokerages over an alleged price-fixing scheme, a live legal matter that could affect the company standing or practices during a long-term contract.
  • Multi-year contract structures reduce a buyer flexibility to switch providers even if a cheaper or better data source emerges during the term.
  • The breadth of the platform (property, hospitality via STR, lease admin) means a firm often pays for modules it does not use just to access the specific data set it needs.

Rent Manager

  • The interface is dense and dated relative to newer cloud products, so onboarding site staff takes longer and training costs are real.
  • Pricing is quoted with monthly minimums, which makes portfolios under roughly 100 units poor value compared with published per-unit competitors.
  • Useful reporting depends on someone learning the report writer, and firms that never assign that role end up exporting to spreadsheets anyway.
  • Mobile applications lag the desktop experience, so field staff get a narrower feature set than office users.
  • The partner and integration ecosystem is smaller than Yardi or RealPage, so specialist proptech tools more often need custom API work than an off-the-shelf connector.

Pricing, plan by plan

CoStar

On request
  • CoStar$undefined/year
    • Per named user licensing, no published rate
    • Multi-year contracts standard
    • Terms explicitly prohibit password or login sharing

Rent Manager

On request
  • Rent Manager$undefined/year
    • Quoted on unit count with monthly minimums
    • Express, Basic and Professional tiers gate modules such as API access and work orders
    • On-premises licensing priced differently from the hosted service

Which should you pick?

Choose CoStar if

  • You need property and ownership records.
  • You also want lease and sales comparables.
CoStar review

Choose Rent Manager if

  • You need mixed portfolio support.
  • You work on Web, Windows, iOS, Android.
  • You also want on-premises or hosted.
Rent Manager review

Questions people ask

Is CoStar or Rent Manager better?
Neither clearly leads. CoStar starts at On request and Rent Manager at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CoStar or Rent Manager?
CoStar starts at On request and Rent Manager at On request.
Does CoStar or Rent Manager run on more platforms?
CoStar runs on Web. Rent Manager runs on Web, Windows, iOS, Android.
What is CoStar best used for?
CoStar is most often used for a commercial brokerage needing lease and sales comparables to support underwriting and pitch materials, an institutional investor or lender wanting standardised market analytics across submarkets for portfolio decisions, a corporate real estate team needing lease administration through costar real estate manager, an appraiser needing sourced, defensible comparable transaction data for valuation reports. Of those, a commercial brokerage needing lease and sales comparables to support underwriting and pitch materials and an institutional investor or lender wanting standardised market analytics across submarkets for portfolio decisions are not what Rent Manager is typically brought in for.
What can CoStar do that Rent Manager cannot?
CoStar covers Property and ownership records, Lease and sales comparables, Tenant and space data, Market analytics. Rent Manager covers Mixed portfolio support, On-premises or hosted, rmVoIP telephony, Report writer.

Answered from the vendors’ own pages

CoStar: Can multiple people share one CoStar login to save cost?

No. Terms explicitly prohibit this, and CoStar has an active pattern of suing individuals and firms for unauthorised access under shared credentials.

Rent Manager: Can Rent Manager be self-hosted?

Yes. It is one of the few current systems still offered for installation on customer servers as well as hosted.

CoStar: Is CoStar pricing published anywhere?

No. It is quote-only, licensed per named user, on multi-year contracts.

Rent Manager: Does it handle commercial leases?

Yes, including CAM reconciliation and commercial lease terms, which is why mixed portfolios choose it.

CoStar: Is there a current legal risk in signing with CoStar?

A June 2026 antitrust lawsuit names CoStar and several major brokerages over an alleged price-fixing conspiracy; buyers with long-term contracts should track that litigation.

Rent Manager: Who owns the company?

London Computer Systems, privately held and founder-led since 1987, not a private-equity roll-up.

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