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Real Estate · head to head

Buildium vs CoStar

Buildium logo

Buildium

Real Estate

Property management software designed with you in mind

From
Free
Rated
-
Full reviewWebsite
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

The short version

  • Only Buildium has a free tier, so it costs nothing to try first.
  • Each has a real cost: Buildium prices are all quoted as starting figures, from $62 a month on Essential to $400 on Premium, so the real cost depends on unit count; 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.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Buildium and CoStar actually diverge.

Attributes where Buildium and CoStar differ
AttributeBuildiumCoStar
Starting priceFreeOn request
Pricing modelsubscriptionquote
Free tierYesNo

Identical on both: platforms (Web), 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 Buildium

Nothing recorded that CoStar does not also cover.

Only in CoStar

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

What people use each for

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

Buildium

  • Property management accounting and rent collectionnot CoStar
  • Maintenance requests and work order trackingnot CoStar
  • Tenant screening and lease signingnot CoStar
  • Owner and tenant portalsnot CoStar
  • Community association management on the Enterprise tiernot CoStar

CoStar

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

Where each one falls short

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

Buildium

  • Prices are all quoted as starting figures, from $62 a month on Essential to $400 on Premium, so the real cost depends on unit count
  • Onboarding is mandatory on the Growth and Premium plans, adding a cost the monthly figure does not show
  • Live phone support is withheld from the Essential tier
  • The Open API is Premium only
  • Portfolios above 5,000 units are pushed to a quote-only Enterprise arrangement

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.

Pricing, plan by plan

Buildium

Free
  • Essential$62/month
    • Basic accounting, maintenance, leasing
    • Standard reporting
    • Basic AI assistant
  • Growth$192/month
    • Everything in Essential
    • Customization and reporting automation
    • Enhanced tenant screening
  • Premium$400/month
    • Everything in Growth
    • Open API access
    • Free inspections

CoStar

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

Which should you pick?

Choose Buildium if

  • You want to start without paying.
Buildium review

Choose CoStar if

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

Questions people ask

Is Buildium or CoStar better?
Neither clearly leads. Buildium starts at Free and CoStar at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Buildium or CoStar?
Buildium has a free tier; the other does not. Paid plans start at Free for Buildium and On request for CoStar.
Does Buildium or CoStar run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Buildium for free?
Yes. Buildium has a free tier, so you can try it without paying. CoStar starts at On request.
What is Buildium best used for?
Buildium is most often used for property management accounting and rent collection, maintenance requests and work order tracking, tenant screening and lease signing, owner and tenant portals. Of those, property management accounting and rent collection and maintenance requests and work order tracking are not what CoStar is typically brought in for.
What can Buildium do that CoStar cannot?
CoStar covers Property and ownership records, Lease and sales comparables, Tenant and space data, Market analytics.

Answered from the vendors’ own pages

Buildium: How much does Buildium cost for a small landlord?

Buildium starts at $62/month (Essential plan) and includes basic accounting, maintenance, and leasing. A 14-day free trial is available without credit card required.

Source
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.

Buildium: Are tenant screening and eSignatures included in Buildium plans?

No. Tenant screening costs $17–$35 per screening. eSignatures cost $1–$5 per document on Essential and Growth plans. Premium plan ($400/month) includes unlimited eSignatures and removes per-document charges.

Source
CoStar: Is CoStar pricing published anywhere?

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

Buildium: What do I get by upgrading from Essential to Premium?

Premium ($400/month) adds Open API access, free property inspections, unlimited free eSignatures, 12 months of free incoming EFT processing, and a full AI suite. Growth ($192/month) is the mid-tier with customization and reporting automation.

Source
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.

Buildium: Does Buildium offer custom pricing for large portfolios?

Yes, Buildium offers Enterprise pricing for portfolios exceeding 5,000 units or community associations. Contact sales at 877-396-7876 for a quote.

Source
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