A Buildium alternative sized for your own doors.
Buildium is property-management software, built for managers handling leasing, maintenance, and owner accounting across many units. If you own your doors rather than manage other people's, you're buying a management workflow to get what's really an investor dashboard. Here's the dashboard, without the rest.
14-day free trial. No credit card.
The product you'd otherwise build yourself
The Portfolio Health Score is one 0–100 number that rolls up NOI, DSCR, occupancy, and expense ratios, computed automatically across every door, and it sits right above the investor metrics you already track.
It's live the day you start, not after a weekend of setup. Long-term and short-term rentals live in the same ledger.
Drop in a statement: the AI writes the ledger
Owner packets, mortgage statements, and invoices are read straight into your books: vendor, amount, date, category, and the property they belong to.
Keystone IQ
Keystone IQ is the owner's books and metrics. Drop in your statements and the AI writes the ledger; see live NOI, DSCR, cap rate, cash-on-cash, and a Portfolio Health Score across every door, long-term or short-term. $4.99–$14.99/mo.
Best for: independent owner-investors who want investment metrics and a tax export, not a management workflow.
Buildium3
Buildium is property-management software: online leasing, tenant communication, maintenance requests, and owner/association accounting for managers. It is a capable management platform, but it is built around managing units for others and is priced and structured for that job.
Best for: property managers and associations handling units on behalf of owners.
Investment metrics like NOI, DSCR, cap rate, and the Portfolio Health Score are calculated from the transactions and leases you enter.4
You want the investor's view, not a management workflow
An owner dashboard vs a property-management platform
Managing property for other owners takes real machinery: leasing, communication, dispatch. If you own your own doors, that machinery is overhead standing between you and the one thing you actually want to know: what your portfolio earns.
Where the real difference is
Four places Keystone IQ goes deeper than a management platform sized for managers, not owners: the actual product, not a feature checklist.
Short-term rentals get their own metrics, not a workaround
Keystone IQ: Every property is tagged long-term, short-term, or mixed. Short-term doors get ADR, RevPAR, Occupancy, ALOS, §280A tracking, and Schedule E vs C classification, in the same ledger as your long-term doors.
Buildium: Buildium covers vacation-rental bookings and guest communication as a secondary case on a traditional-leasing platform, but per-night metrics like ADR, RevPAR, and Occupancy aren’t advertised.1
Reads the statement, not just the background automation
Keystone IQ: A mortgage payment lands already split: interest and principal booked separately, straight from the statement, no manual entry.
Buildium: Buildium’s AI is described as advanced automation running in the background;1 reading an individual PDF owner packet or mortgage statement to split a payment into interest and principal isn’t advertised.
Live investment metrics by name, not generic "analytics"
Keystone IQ: Every transaction lives in one searchable, filterable ledger per property and portfolio-wide, feeding live NOI, DSCR, and cap rate, plus a CPA-ready export covering Schedule E, 8825, and Schedule C.
Buildium: Buildium describes “property-specific financial reporting” and “business analytics” generically;1 NOI, DSCR, and cap rate by name aren’t called out on its homepage.
The AI looks for money you’re leaving on the table
Keystone IQ: Optimization Opportunities automatically surfaces rent priced below market, vendor spend worth consolidating, and insurance-renewal risk. Each carries an estimated dollar opportunity: options to review, never acted on for you.
Buildium: automated below-market-rent, vendor-consolidation, or renewal-risk alerts aren’t advertised;1 Buildium’s automation is described as workflow support for a property-management business, not a standing opportunity scan for an owner.
Keystone IQ vs Buildium1
| Capability | Keystone IQ | Buildium |
|---|---|---|
| Built for | Independent owner-investors, any size | Property managers & associations |
| Pricing model | $4.99–$14.99 / mo, no unit minimum | Tiered monthly plans priced for property managers (confirm current terms on Buildium’s site) |
| AI document entry | Owner packets, statements, invoices; plus Airbnb CSV import | Not advertised as AI document entry |
| Owner-investor metrics | NOI, DSCR, cap rate, CoC + Health Score (Pro) | Manager-oriented accounting & reports |
| Mortgage equity | Principal/interest split + amortization | No automated equity tracking advertised |
| Short-term rentals | ADR, RevPAR, Occupancy, §280A, Schedule E vs C | Not the focus |
| Leasing, maintenance, tenant portal | No: we are the books, not a PM workflow | Yes: full management suite |
Built for
Pricing model
AI document entry
Owner-investor metrics
Mortgage equity
Short-term rentals
Leasing, maintenance, tenant portal
Comparison basis: publicly available information as of September 2026. Verify current details on Buildium's own website.1
Switch to Keystone IQ if…
You want the software to do more of the work.
- You own your doors; you're not managing units for other owners.
- You're an independent owner-investor and Buildium is more workflow than you need.
- You want investment metrics and a clean tax export, not leasing and maintenance tools.
- You have a mix of long-term and short-term rentals you want in one ledger.
Stick with Buildium if…
It's genuinely the right call for some investors.
- You manage property on behalf of other owners or an HOA/association.
- You need tenant portals, maintenance request handling, and lease workflows.
- Your business is managing units, not owning them.
Switching starts from what you already have
No CSV gymnastics. Keystone IQ rebuilds your ledger from the source documents you already keep: statements, owner packets, receipts.
Drop in your PDFs
Historic bank statements, invoices, mortgage statements, and PM owner packets. The AI reads them and drafts your ledger.
Sync bank feeds
Connect your operating accounts and mortgages securely through Plaid for live transaction activity.
Confirm your properties
Add rents, leases, and (if you host) your Airbnb CSV. Forecasts and metrics build themselves.
Export for your CPA2
At tax time, generate a clean Schedule E / 8825 (or Schedule C) export in one click.
Common questions
Is Keystone IQ a Buildium replacement?
Only if you're an owner, not a manager. Keystone IQ replaces the bookkeeping-and-metrics half: the ledger, NOI/DSCR/cap rate, and the tax export. It does not do tenant portals, maintenance dispatch, or lease management. If you manage units for others, Buildium is the right category.
What does Keystone IQ cost compared to Buildium?
Keystone IQ is a flat $4.99/mo (Starter) or $14.99/mo (Pro) with no unit minimum. Buildium publishes plans aimed at property managers running larger portfolios; pricing changes, so check Buildium’s site for the current numbers.1 They’re priced for different jobs, and you aren’t paying for a management platform.
Can it handle both my long-term rentals and my Airbnb?
Yes, and that’s a core difference. Each property is tagged long-term, short-term, or mixed; the dashboard aggregates both, and the tax export emits the right form per property. Short-term per-night metrics like ADR and RevPAR aren’t typically part of a long-term management suite’s advertised toolset.
Real product, sample data.
Own the doors? Skip the management workflow.
The investor's ledger, metrics, and tax export: long-term and short-term in one place. 14-day free trial, no credit card.
Comparing a specific tool?
Disclosures
- 1.Comparison basis. This comparison is based on our good-faith understanding of Buildium's publicly available marketing, published pricing, and product documentation as of the date shown (September 2026), and may be incomplete or out of date. Competitor features, pricing, and tiers change frequently and without notice. Verify current details on Buildium's own website before making any decision.
- 2.Tax. For informational purposes only. Keystone IQ is a software tool for record-keeping and portfolio analytics, not a tax, accounting, or legal advisory service. Consult a qualified tax advisor before relying on any figure for a filing or financial decision.
- 3.Trademarks. Buildium and all other product names referenced are trademarks of their respective owners. Their use here is nominative and does not imply any affiliation with, sponsorship by, or endorsement by them.
- 4.Investment metrics. For informational purposes only. Not investment, tax, or financial advice.