CoStar vs Black Owl Systems: Real Estate Manager Lease Accounting Software Pricing Compared

The short answer

CoStar Real Estate Manager and Black Owl Systems are not really competitors, which is the single most useful thing to know before you book either demo. CoStar Real Estate Manager is an enterprise platform for corporate real estate teams: lease accounting, lease administration, market data and analytics, and transaction management, sold to organizations running thousands of leases across departments. Black Owl Systems is a focused lease accounting engine from Calgary that produces the lessee and lessor close under ASC 842, IFRS 16, and the Canadian ASPE Section 3065. Neither one reads your lease documents. Neither one publishes a price. Neither one offers a free trial. Where they genuinely differ is scope, international standard coverage, and how each one charges.

Neither platform will read your leases, and that changes the budget

Both vendors use the phrase lease management, and buyers reasonably assume it includes getting the lease terms into the system. It does not, in either case.

We checked Black Owl's homepage, features page, and pricing page again on August 30, 2026. The words abstract, abstraction, extract, OCR, and AI appear on none of them. CoStar is a slightly more interesting case and worth stating precisely, because a sloppy summary here costs somebody a procurement cycle. CoStar does publish blog articles about lease abstraction, including one on choosing lease administration software for abstraction. What it does not publish is an abstraction product page. Its sitemap runs to 334 URLs and the only abstraction entries in it are blog posts. The word abstract appears zero times on its homepage, platform overview, lease administration software, lease accounting software, accounting teams, and ASC 842 pages. There is no artificial intelligence or machine learning claim on any of those pages either, and no extraction accuracy percentage anywhere on the site.

CoStar is also candid about how abstraction really happens. Its own article describes "software-driven extraction with review workflows so nuance doesn't get lost in commercial lease language," where software accelerates capture and human abstractors validate exceptions and non-standard clauses. That is an accurate description of the work. It is also a description of a job neither product in this comparison performs for you.

So price the data entry, not just the license. Somebody has to open every lease and key in the commencement date, the base rent, each escalation, the renewal and termination options, every notice window, and the CAM recovery method. At four to eight analyst hours per lease, a 200 lease portfolio is a project in its own right, and it happens before either platform produces a single journal entry. That is the number that moves go-live dates, and it is missing from most CoStar and Black Owl comparisons.

How each one actually charges

Neither publishes a dollar figure, but they publish very different amounts of detail about the model, and the model is the part you can plan around.

CoStar is unusually clear for an enterprise vendor. Its pricing page states plainly: "While others charge by the user, CoStar Real Estate Manager only charges for what you use." Each product is metered on a different unit. Lease Accounting and Administration is "priced by the number of real estate or equipment leases." Market Data and Analytics is "priced by the number of owned or leased real estate locations." Transaction Management is "priced by the number of active transaction projects." A quote is described as including unlimited users, future upgrades, system integrations, SSO and add-ons, and enterprise security. So headcount does not drive your bill, portfolio size does, and adding a fourth product adds a fourth meter. One wrinkle worth knowing: costarmanager.com/pricing returns a 404, and the Pricing link in the site navigation goes to a demo request form.

Black Owl publishes five plans and no numbers. Small Business, Large Companies, and Enterprise on the company side, plus CPA Essentials and CPA Advanced for accounting firms. Every one of them says Contact Sales, on a page headed "Transparent Plans for Every Team Size." What the tiers do tell you is where the feature cliffs sit. Small Business already includes unlimited users and entities, complete lessee and lessor functionality, all reports, all upload templates, and free support. Multi-currency, single sign-on, a custom journal entry mapper, and standard ERP integration all start at Large Companies. A test environment, advanced ERP integrations, and multiple journal entry exports start at Enterprise. If you need SSO or an ERP feed, you are not on the entry plan, and that is the most useful pricing signal Black Owl gives you.

You will find per-year dollar figures for both products on software directory sites. Treat them as unverified. They are not sourced to either vendor, neither vendor confirms them, and a number that ignores portfolio size, module mix, entity count, and implementation scope will not survive contact with a real quote. We only publish prices a vendor publishes itself.

GASB 87 is the row public sector buyers should ask about first

If you are a city, county, school district, transit authority, or public university, neither of these is a clean yes on GASB 87, and both need written confirmation before they reach your shortlist.

CoStar runs dedicated standard pages for ASC 842, IFRS 16, and FRS 102. There is no GASB page among its 334 sitemap URLs. GASB does appear twice on the site, and the context matters both times. On the ASC 842 page it is explainer copy: "State and local governments report leases under the Government Accounting Standards Board's (GASB) Statement 87." On the homepage it appears inside the Visual Lease acquisition announcement, where CoStar says customers "will benefit from Visual Lease's mid-market innovation and advances in GASB and sustainability." That is a real route to GASB coverage, since CoStar bought Visual Lease for $272.5 million in cash in a deal that closed November 1, 2024, and Visual Lease does publish GASB 87 and GASB 96 support. But it means the answer to "is CoStar GASB compliant" is currently "through the product it acquired," and you should ask which platform your quote is actually for.

Black Owl is narrower still. It publishes support for ASC 842, IFRS 16, and ASPE Section 3065. GASB 87 appears on its pricing page inside background copy about why the standards changed, and its features page does not mention GASB anywhere. The accurate statement is that Black Owl publishes support for ASC 842, IFRS 16, and ASPE 3065 and names GASB 87 only in explainer copy. Get it confirmed in writing. That is a five minute email and it prevents a very expensive misunderstanding.

Where Black Owl wins, and where CoStar does

Black Owl wins on ASPE 3065 and on simplicity. ASPE Section 3065 is the Canadian private enterprise standard, and almost no US-built lease platform supports it. For a US CPA firm carrying Canadian private enterprise clients alongside domestic work, that single row does more shortlisting than any feature grid, and the CPA Essentials and CPA Advanced plans exist for exactly that firm. The simplicity point is just as real: unlimited users on the entry plan, one job done properly, and an implementation you can plausibly finish in a quarter.

CoStar wins on breadth, on integration maintenance, and on the audit conversation. Managed integrations to SAP, Oracle, Workday, and NetSuite are maintained by the vendor, which matters more than it sounds like it does when your ERP upgrades. SOC 1 Type II certified security is the specific attestation a financial statement auditor asks for, and Black Owl publishes no equivalent. And if you also need market data, portfolio analytics, or transaction management, CoStar has them in the same platform rather than in three more contracts. CoStar also publishes a 98 percent renewal rate and says it has "replaced more lease accounting and lease admin platforms than anyone." Those are vendor claims rather than audited figures, so weigh them accordingly, but a renewal rate is at least the right thing for a vendor to be proud of.

Which one should you shortlist?

Shortlist CoStar Real Estate Manager if you are a corporate real estate or accounting team with hundreds or thousands of leases, you need lease administration and accounting in one system, your auditor wants a SOC 1 report, and you want the ERP integrations maintained for you. Shortlist Black Owl Systems if you need the ASC 842 or IFRS 16 close and nothing more, you want unlimited users without a per seat bill, you file under ASPE 3065, or you are a CPA firm managing multiple client entities. If you are a public sector entity, ask both about GASB 87 in writing before anything else.

And whichever way it goes, abstract the leases first. Both platforms are calculators waiting for data, and the data is still sitting in PDFs. Our Black Owl Systems competitors page covers the wider field, CoStar Real Estate Manager alternatives covers where CoStar customers look next, and what the Visual Lease acquisition means explains how the two CoStar products now fit together.