> AI agents: this is one page from PostHog's docs. Full index of Markdown docs for LLMs: https://posthog.com/llms.txt

# Linking Buildium as a source

Canonical URL: https://posthog.com/docs/data-pipelines/sources/buildium

> **Cloud region:** This page uses US Cloud hosts. For an EU Cloud project, use `https://eu.posthog.com` instead of `https://us.posthog.com` or `https://app.posthog.com` (app host for links).

## On this page

- [Prerequisites](#prerequisites)
- [Adding a data source](#adding-a-data-source)
- [Sync modes](#sync-modes)
- [Configuration](#configuration)
- [Supported tables](#supported-tables)
- [Troubleshooting](#troubleshooting)

**Beta release**

This source is currently in **beta**. It works end to end, but you may still hit rough edges. [Let us know](https://us.posthog.com/#panel=support%3Asupport%3Adata_warehouse%3A%3Atrue) if you do.

![](https://res.cloudinary.com/dmukukwp6/image/upload/texture_tan_9608fcca70)

![](https://res.cloudinary.com/dmukukwp6/image/upload/texture_tan_dark_a92b0e022d)

Let AI connect your sources for you

Skip the manual setup — run this in your project and the wizard auto-detects your databases and APIs and connects them to PostHog.

`npx @posthog/wizard warehouse`

![PostHog Wizard hedgehog](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)

![](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)Let AI connect your sources for you

The Buildium (RealPage) connector syncs your property management data – rental properties, units, leases, tenants, owners, vendors, bills, general ledger accounts, work orders, and applicants – into PostHog, so you can analyze your property operations alongside your product data.

## Prerequisites

-   A **Buildium Premium subscription** (required for API access).
-   **Open API** enabled in your Buildium account.
-   An API key created under **Settings > Developer Tools** in Buildium.
-   **View** access granted for the data you want to sync.

## Adding a data source

1.  In PostHog, go to the [Sources tab](https://app.posthog.com/data-management/sources) of the data pipeline section.
2.  Click **\+ New source** and click **Link** next to this source.
3.  Enter your credentials (see [Configuration](#configuration) below) and click **Next**.
4.  Select the tables you want to sync, choose a sync method and frequency, then click **Import**.

Once the syncs are complete, you can start querying this data in PostHog.

When linking Buildium, you'll need:

-   **Client ID** – the client ID from your Buildium API key.
-   **Client secret** – the client secret from your Buildium API key.

You can create API keys in Buildium under **Settings > Developer Tools**. See the [Buildium API documentation](https://developer.buildium.com/) for more details.

## Sync modes

Each table can be synced in one of several modes, depending on what the source supports:

-   **Webhook** (when available) – the source pushes changes to PostHog in real time. Fastest freshness, lowest ongoing cost, and the only mode that reliably captures updates and deletes.
-   **Incremental** – only new or updated rows are synced on each run, using a cursor field (such as an `updated_at` timestamp). Cheaper than a full refresh, but deletes aren't captured.
-   **Append only** – new rows are appended using a cursor field; existing rows are never updated. Ideal for immutable, append-only tables like event logs.
-   **Full refresh** – the whole table is reloaded on every sync. Use it when a table has no reliable cursor or when you need deletions reflected.

See [sync methods](https://posthog.com/docs/data-pipelines/sources.md#sync-methods) for a full explanation of how each mode works and how to choose between them.

Only the **leases** and **applicants** tables support incremental syncing (using the `LastUpdatedDateTime` field). All other tables use full refresh because the Buildium API does not return update timestamps for those resources.

## Configuration

| Option | Type | Required |
| --- | --- | --- |
| `Client ID` | text | Yes |
| `Client secret` | password | Yes |

## Supported tables

| Table | Description | Sync method | Incremental field | Primary key |
| --- | --- | --- | --- | --- |
| `rental_properties` | Properties managed as rentals in Buildium. | Full refresh | — | — |
| `rental_units` | Individual units within rental properties. | Full refresh | — | — |
| `leases` | Rental agreements for property units. | Incremental, Full refresh | LastUpdatedDateTime | — |
| `tenants` | Tenants associated with rental leases. | Full refresh | — | — |
| `rental_owners` | Owners of managed rental properties. | Full refresh | — | — |
| `vendors` | Vendors that provide services for managed properties. | Full refresh | — | — |
| `bills` | Bills recorded in Buildium accounting. | Full refresh | — | — |
| `general_ledger_accounts` | Accounts that classify accounting transactions. | Full refresh | — | — |
| `work_orders` | Work orders for property maintenance. | Full refresh | — | — |
| `applicants` | Applicants for rental properties and units. | Incremental, Full refresh | LastUpdatedDateTime | — |
| `bank_accounts` | Bank accounts that hold property, company, and association funds. | Full refresh | — | — |
| `general_ledger_transactions` | Financial transactions recorded in the general ledger, with their journal lines. | Incremental, Full refresh | LastUpdatedDateTime | — |
| `lease_transactions` | Charges, payments, credits, and other transactions on each lease ledger. | Full refresh | — | — |
| `lease_outstanding_balances` | Leases that have an outstanding balance, split by how long the amount has been due. | Full refresh | — | — |
| `inventory_assets` | Inventory items and assets tracked for properties, units, and the company. | Full refresh | — | — |
| `inventory_storages` | Storage locations that hold inventory assets. | Full refresh | — | — |
| `asset_categories` | Categories used to group inventory assets. | Full refresh | — | — |
| `custom_field_definitions` | Custom fields defined for each Buildium entity type, such as rentals, leases, and vendors. | Full refresh | — | — |

## Troubleshooting

-   If you see an authentication error, your client ID or client secret is invalid. Create a new API key in Buildium under **Settings > Developer Tools**, then reconnect.
-   If you see a permissions error, your API key does not have the required access. Make sure Open API is enabled and your key has **View** access for the tables you want to sync.

If your sync is failing or data looks wrong, see the [Data warehouse troubleshooting guide](https://posthog.com/docs/data-warehouse/troubleshooting.md). If that doesn't help, [contact support](https://us.posthog.com/#panel=support%3Asupport%3Adata_warehouse%3A%3Atrue) – we're happy to help.