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Migration · Buildium to AppFolio
This is the easiest pair on this page, and I'd rather tell you that than pretend otherwise. Both systems are modern, both have real APIs, and the data comes out cleanly. If you have one small portfolio and tidy books, you may not need me at all.
Where it stops being easy is scope. Cloud-to-cloud migrations fail on decisions, not on extraction — how much ledger history to carry, what to do with the association records, whether duplicate owners get merged. Those decisions are the engagement.
Buildium exposes a documented API and full data exports, so getting the records out is genuinely straightforward — this is the rare pair where extraction is not the hard part. AppFolio's onboarding accepts data in their templates. The work concentrates entirely in the middle: deciding what a Buildium field means after years of your own conventions, cleaning what needs cleaning, and reconciling the result so the first AppFolio owner statement is correct.
Each of these gets its own record count in the assessment and its own line in the reconciliation report. Depth of history is a scope decision made with real numbers in front of you, not an assumption baked into a quote.
Properties, units, and portfolio structure
Property records, units, unit types, and the portfolio grouping that determines how reporting rolls up on the AppFolio side.
Tenants and lease history
Current and past residents, lease terms, renewals, move-in and move-out dates, and the occupancy history your reporting depends on.
Tenant ledgers and balances
Charges, payments, credits, prepaid rent, and current balances, reconciled against a Buildium-side control report before load.
Security deposits
Held amounts and deposit type, reconciled separately — deposits are the number an auditor checks first.
Owners and owner balances
Owner records, ownership splits, and the balances the first AppFolio owner statement will be built from.
Vendors and 1099 data
Vendor master with W-9 and 1099 flags, plus the payable history needed to close the year cleanly.
Work orders and documents
Open work orders always, closed history to an agreed depth, and leases, addenda, and inspection reports remapped to the right resident and property.
Written down before you spend anything, because the alternative is finding out in week six. This list is specific to Buildium to AppFolio; the assessment turns it into your list, with record counts attached.
— Resident and owner portal logins. Everyone re-registers on the AppFolio side. This is worth planning a communication around, because it is the part your residents actually notice on day one.
— Buildium's association and HOA-specific structures, if you're moving that side of the business into AppFolio's property management product. The data models genuinely differ and the mapping is a conversation, not a script.
— Custom Buildium reports. Rebuilt against AppFolio's reporting layer as separate work.
— eSignature history and the audit trail attached to it. Executed documents migrate as documents; the signing metadata generally stays behind.
— Resident Center message history. It's conversation data, not record data, and neither system treats it as portable.
— Buildium's internal record IDs. AppFolio issues its own, and anything keyed externally needs the mapping table I produce and hand to you.
None of this is in either vendor's documentation. It is the category of thing that looks fine in a test load and produces a wrong number in month two, which is why the process puts a full sandbox load and a reconciliation you sign in front of any production cutover.
01
Recurring charges and credits are modeled differently enough between the two systems that a direct map produces a correct first month and a wrong second month. Tested against a full billing cycle in the sandbox, never assumed.
02
How these are structured in Buildium reflects a decade of your own conventions. Mapped explicitly, because getting them wrong doesn't produce an error — it produces an owner statement that's quietly off.
03
If you run HOAs and rentals in one Buildium account, moving both into AppFolio means deciding which product each side belongs in. That decision changes the price and it belongs in the assessment, not in week four.
04
Because extraction is cheap here, the temptation is to migrate fifteen years of transaction detail simply because you can. Volume still costs money to validate. The assessment gives you record counts so that call is made against real numbers.
01 — 02
A read-only audit of your Buildium instance produces record counts, a risk register, and a fixed quote. Then a field-by-field mapping document you sign before any code runs.
03 — 04
The complete migration runs into a AppFolio sandbox — not a sample. You spot-check records you choose, and sign a written reconciliation. If the counts don't tie, we don't cut over.
05 — 06
Scheduled around your calendar with the rollback plan written in advance, followed by 30 days of included corrections for the things that only surface in real use.
A single portfolio with clean books almost always lands in Standard Migration, at the lower end. Multiple portfolios, mixed HOA and rental books, or a long ledger history to carry can push it toward Complex. The assessment is what makes a fixed migration price possible, and its fee is credited toward the migration if you proceed.
Tier
Scope
Price
Migration Assessment
A read-only audit of your source system.
$1,500 – $2,500
Standard Migration
One source system to one destination.
$6,500 – $15,000
Complex / Multi-Entity Migration
Multiple locations, systems, or long history.
$18,000 – $40,000
Possibly, and I'd rather you asked. If you have one portfolio, under a few hundred units, clean books, and someone with a spare month, a DIY migration between these two systems is a real option. Independent migration work earns its fee where there are multiple portfolios, mixed HOA and rental books, a prior migration already buried in the data, or where you want the reconciliation and rollback documented and owned by someone accountable to you.
Most operators carry two to three years of transaction detail plus current balances, and keep Buildium read-only for anything older. Carrying more is possible and it costs more to validate — the assessment gives you the record counts so it's a decision rather than a guess.
A new portal to register for. That's the visible part, and it's worth a scheduled email rather than a surprise. Balances, lease terms, and payment history are all in place before they log in.
That's between you and AppFolio and it varies by plan — ask them directly. What I do is separate from and complementary to their onboarding: I hand their team clean, validated files in their format, which is the part that sits outside their scope.
The assessment is the read-only audit — what data exists, what is extractable, what will be lost, and a fixed-price quote for the migration itself. It is priced at $1,500 – $2,500 depending on scope, fixed before anything starts, and the report is yours whether or not you go further.
Tell me what you're moving. I read every one of these personally and reply within one business day, usually with a couple of specific questions about your source system — the answers change the price, so it's worth asking early.
Nothing is committed by this form. No payment, no contract, no scheduling sequence. It starts a conversation.
If your destination vendor can handle it, I'll say so. Some conversions genuinely don't need an independent migration.
Standard – Complex
Ledger depth and deposit interest.
Complex
Enterprise scale and module sprawl.
Every pair
Twenty-odd pairs are written up across seven industries — and the written ones are not the limit of the work. Search the full list, or just ask.
Buildium and AppFolio are trademarks of their respective owners. This page describes independent data migration work involving those systems and does not imply any affiliation with, partnership with, or endorsement by either vendor.
Before you give notice on Buildium
The most expensive mistake in this category is losing source-system access before the extraction is done. The assessment is read-only, fixed-price, and yours to keep either way.
I respond personally within 1 business day. No pitch — just a real conversation.