Connect Buildium to Lovable by creating an Edge Function that calls Buildium's REST API with your API key stored in Cloud Secrets. Build custom property management dashboards, tenant portals, and maintenance request tools on top of Buildium's data. Buildium serves small to mid-size property managers — use this integration to create custom interfaces that go beyond Buildium's built-in tenant and owner portals.
Build Custom Property Management Interfaces on Top of Buildium with Lovable
Buildium is designed for small to mid-size property managers — residential landlords, HOA managers, and community associations who need organized tenant tracking, lease management, and maintenance coordination. While Buildium's built-in portals serve basic needs, property managers often want custom interfaces: a branded tenant portal that matches their company identity, a mobile-optimized maintenance request flow, an owner dashboard with custom metrics, or a leasing agent tool tailored to their specific workflow.
Lovable can build these custom interfaces on top of Buildium's API while keeping Buildium as the system of record. All tenant, lease, property, and financial data stays in Buildium — Lovable reads and writes to it through API calls. Tenants interact with the polished Lovable-built portal, which creates or updates records in Buildium just as if the tenant used Buildium's native portal.
Buildium's REST API follows standard REST conventions with API key authentication and JSON responses. The API covers the same objects available in Buildium's web interface: rental properties and units, tenants and leases, maintenance requests and work orders, tasks, owners and owner statements, and accounting transactions. For property managers who need custom integrations beyond what Buildium's built-in automations support, the API opens the full platform to Lovable-built workflows.
Integration method
Buildium connects to Lovable through an Edge Function that calls Buildium's REST API using an API key stored in Cloud Secrets. Property, tenant, lease, and work order data are all accessible through the proxy for building custom management dashboards and branded tenant portals.
Prerequisites
- A Lovable account with a project open and Lovable Cloud enabled
- An active Buildium account with API access enabled (available on Essential, Growth, and Premium plans)
- A Buildium API key generated from your account's Settings → API Access
- Knowledge of your Buildium data — property names, unit numbers, and tenant structure
- Understanding of which Buildium endpoints your use case requires (properties, units, tenants, leases, work orders)
Step-by-step guide
Generate a Buildium API Key
Generate a Buildium API Key
Log in to your Buildium account and navigate to Settings (click your account name in the top right) → API Access. If you don't see API Access in Settings, your plan may not include API access — check that you're on Buildium's Essential, Growth, or Premium plan, as the free trial may not include API access. On the API Access page, click 'Create API Key'. Give it a descriptive name like 'Lovable Integration'. Buildium generates a client ID and client secret pair, or in some account configurations, a single API key string. Copy these values — the secret is shown only once in some configurations. Buildium's API uses HTTP Basic Authentication where the username is your client ID and the password is your client secret, encoded as Base64 in the Authorization header. The API base URL is https://api.buildium.com/api/v1. Review Buildium's API documentation at developer.buildium.com to understand the available endpoints and their response formats before building the Edge Function.
Pro tip: Buildium's API documentation at developer.buildium.com includes an interactive API explorer where you can test endpoints before building the Edge Function. Use it to verify the exact field names and response structures for the endpoints you plan to use.
Expected result: A Buildium API key (or client ID and secret pair) is generated and ready to store in Cloud Secrets.
Store Buildium Credentials in Cloud Secrets
Store Buildium Credentials in Cloud Secrets
In Lovable, click the '+' button next to the Preview panel to open the Cloud tab, then navigate to Secrets. Add your Buildium credentials: - BUILDIUM_CLIENT_ID: your Buildium API client ID - BUILDIUM_CLIENT_SECRET: your Buildium API client secret Buildium uses HTTP Basic Auth with client ID as username and client secret as password. The Edge Function constructs the Authorization header by Base64-encoding 'clientId:clientSecret'. Some Buildium accounts use a single API key instead — if your account provided a single key string, store it as BUILDIUM_API_KEY and adjust the Edge Function authentication accordingly. Buildium's API base URL is always https://api.buildium.com/api/v1, so there's no need to store it as a secret. However, if Buildium provides you with a sandbox environment URL during development, store that as BUILDIUM_BASE_URL and switch it to the production URL before launch.
Pro tip: If you manage multiple Buildium accounts (separate companies or portfolios), create separate Cloud Secret sets and separate Lovable projects for each. A single Edge Function cannot serve multiple Buildium accounts simultaneously with different API keys.
Expected result: BUILDIUM_CLIENT_ID and BUILDIUM_CLIENT_SECRET are saved in Cloud Secrets. The Edge Function can construct the Basic Auth header and make authenticated Buildium API calls.
Create the Buildium API Proxy Edge Function
Create the Buildium API Proxy Edge Function
Create the Edge Function that proxies Buildium REST API requests. Buildium's API is well-documented and follows standard REST conventions: GET for reading resources, POST for creating, PUT/PATCH for updating, and DELETE for removing. All responses use JSON with consistent field naming. The function accepts an endpoint path and operation from the frontend, constructs the full Buildium URL, adds the Basic Auth header, and returns the response. Adding pagination support is important — Buildium paginates list responses with pagesize and pagenumber parameters, returning a totalCount and totalPages in the response. Buildium's API supports several useful query parameters for filtering: getProperties accepts orderBy and status, getTenants accepts unitId and buildingId filters, and getWorkOrders accepts status and propertyId filters. Building these filters into your Edge Function's parameter handling lets your React components efficiently query exactly the data they need.
Create an Edge Function called buildium-proxy at supabase/functions/buildium-proxy/index.ts. It should read BUILDIUM_CLIENT_ID and BUILDIUM_CLIENT_SECRET from Deno environment variables and construct HTTP Basic Auth by base64 encoding 'clientId:clientSecret'. Accept POST requests with: endpoint (string, e.g., '/properties', '/units', '/tenants', '/leases', '/workorders'), method (GET, POST, PUT, PATCH, DELETE), params (optional object of query parameters for GET), body (optional object for POST/PUT/PATCH). Call https://api.buildium.com/api/v1{endpoint} with the Basic Auth header. Handle Buildium pagination (pagesize default 50, pagenumber). Return the response including totalCount and results. Include CORS headers and error handling for 404 (resource not found) and 422 (validation error) responses.
Paste this in Lovable chat
1// supabase/functions/buildium-proxy/index.ts2import { serve } from "https://deno.land/std@0.168.0/http/server.ts";34const corsHeaders = {5 "Access-Control-Allow-Origin": "*",6 "Access-Control-Allow-Headers": "authorization, x-client-info, apikey, content-type",7 "Access-Control-Allow-Methods": "POST, OPTIONS",8};910serve(async (req: Request) => {11 if (req.method === "OPTIONS") {12 return new Response("ok", { headers: corsHeaders });13 }1415 try {16 const clientId = Deno.env.get("BUILDIUM_CLIENT_ID");17 const clientSecret = Deno.env.get("BUILDIUM_CLIENT_SECRET");18 const authHeader = `Basic ${btoa(`${clientId}:${clientSecret}`)}`;1920 const { endpoint, method = "GET", params, body } = await req.json();2122 let url = `https://api.buildium.com/api/v1${endpoint}`;23 if (params && method === "GET") {24 url += "?" + new URLSearchParams(Object.entries(params).map(([k, v]) => [k, String(v)])).toString();25 }2627 const response = await fetch(url, {28 method,29 headers: {30 "Authorization": authHeader,31 "Content-Type": "application/json",32 "Accept": "application/json",33 "x-buildium-api-version": "v1",34 },35 ...(body ? { body: JSON.stringify(body) } : {}),36 });3738 const data = await response.json();39 return new Response(JSON.stringify(data), {40 status: response.status,41 headers: { ...corsHeaders, "Content-Type": "application/json" },42 });43 } catch (error) {44 return new Response(JSON.stringify({ error: error.message }), {45 status: 500, headers: { ...corsHeaders, "Content-Type": "application/json" },46 });47 }48});Pro tip: Buildium's API requires the 'x-buildium-api-version: v1' header on all requests. Omitting this header can cause unexpected behavior or version mismatch errors. The Edge Function includes this header in all requests.
Expected result: The buildium-proxy Edge Function is deployed. Testing with a GET to /properties returns your Buildium property list as JSON.
Build the Property and Tenant Dashboard
Build the Property and Tenant Dashboard
With the Edge Function deployed, open the Lovable chat and describe the dashboard components you want. Provide the Buildium endpoint paths and field names from the Buildium API documentation — the key endpoints and their fields are well-documented at developer.buildium.com. Buildium's property objects include: id, name, address, type (Residential, HOA), status, and related units. Unit objects include: id, buildingId, unitNumber, address, status, rentAmount, and deposit. Tenant objects include: id, firstName, lastName, email, phone, and leaseId. Lease objects include: id, unitId, tenantIds, startDate, endDate, monthlyRent, securityDepositAmount, and status. For a property management dashboard, the most useful views are: all properties with unit counts and occupancy rates, vacancy list showing unoccupied units, upcoming lease expirations (leases ending in the next 60-90 days), rent collection status for the current month (tenants with outstanding balances), and open maintenance requests by property. Lovable generates the React components, data fetching logic, and UI for each of these views. Provide the relevant Buildium field names in your prompt to ensure Lovable generates correct data access code.
Using the buildium-proxy Edge Function, build a property management dashboard with these sections: (1) Portfolio overview — GET /properties for property list, GET /units?buildingId={id} for each property's units, show property cards with unit count, occupancy rate (occupied units / total units * 100), and monthly rent roll sum. (2) Vacancies — GET /units?status=Vacant showing unit number, property name, rent amount, vacancy date, days vacant. (3) Lease expirations — GET /leases?status=Active with endDate filter for next 90 days, show tenant name, unit, end date, days until expiration with color coding (red < 30 days, yellow 30-60, green 60-90). Use shadcn/ui Card and Badge components throughout.
Paste this in Lovable chat
Pro tip: Buildium's API returns paginated results with a default page size of 50. For property managers with more than 50 properties or units, implement pagination in your dashboard components by checking the totalCount in the response and adding 'Load more' or page navigation.
Expected result: A property management dashboard loads with live data from your Buildium account. Vacancy list, lease expirations, and portfolio metrics all display correctly using real Buildium records.
Add Maintenance Request Submission and Tracking
Add Maintenance Request Submission and Tracking
Maintenance request management is one of the highest-value features in a custom property management portal. Tenants submit requests through the Lovable portal, which creates work orders in Buildium. Property managers update work order status in Buildium, and the status syncs back to the tenant's portal view. Buildium's work orders API accepts: POST /workorders with body including title, description, priority (Low, Normal, High, Emergency), assignedAccountId (vendor), scheduledDateTime, and propertyId. To link a work order to a specific unit, include the unitId. The API returns the created work order with an auto-generated ID that tenants can use to track status. For a complete maintenance workflow, the tenant portal needs: a form for submitting new requests (creates a Buildium work order), a list of the tenant's open and recent requests (GET /workorders filtered by unitId), and status display showing the current work order status, vendor if assigned, and scheduled date. The property manager side needs: a full work order queue filtered by property or status, the ability to update work order status and assign vendors, and notes for communicating back to tenants. For complex maintenance workflows involving vendor management and cost tracking, RapidDev's team can help design the full Buildium integration architecture.
Add a maintenance request feature to my Buildium integration. For tenants: a form to submit a new maintenance request with title (text, required), description (textarea, required), priority (select: Low/Normal/High/Emergency, required), preferred access time (select options), and unit ID from their lease. The form should POST to Buildium's /workorders endpoint. After submission, show a confirmation with the work order number. For the tenant portal, show their last 5 work orders from GET /workorders?unitIds={unitId} with title, status badge (Open/In Progress/Completed), submitted date, and scheduled date if set.
Paste this in Lovable chat
Expected result: Tenants can submit maintenance requests through the Lovable portal that immediately appear as work orders in Buildium's interface. Tenants see their request history with current status.
Common use cases
Build a branded tenant portal with Buildium as the backend
Property managers want a tenant portal with their company logo, colors, and design rather than Buildium's generic interface. Tenants log in to the custom Lovable portal, submit maintenance requests, view their lease details, and make payments — all of which write back to Buildium in real time.
I manage 45 units across 8 properties in Buildium. I want a branded tenant portal with my company colors. I've stored BUILDIUM_API_KEY in Cloud Secrets. Create an Edge Function called buildium-proxy that calls Buildium's REST API at https://api.buildium.com/api/v1. Then build a tenant portal with: login page (tenants authenticate with email/Supabase Auth, matched to Buildium tenant record by email), dashboard showing their lease details (start/end date, monthly rent, balance), last 3 maintenance requests with status, and a form to submit a new maintenance request that creates a work order in Buildium.
Copy this prompt to try it in Lovable
Create a vacancy management dashboard for leasing agents
Leasing agents need a quick view of all vacant units across all properties, with turn time, days vacant, and current asking rent. A Lovable dashboard queries Buildium's property and unit data, filters for vacancies, and displays the information in a format optimized for making calls and following up on leads.
Build a vacancy dashboard using the Buildium API. The endpoint for getting units is GET /units with filterByVacancyStatus=Vacant. Each unit object has: id, buildingId, unitNumber, unitAddress (street, city, state, zipCode), rentAmount, depositAmount, status, vacancyDate. Also get properties with GET /properties to match buildingId to property name. Build a sortable table of all vacant units with: property name, unit number, address, monthly rent, deposit, days vacant (calculated from vacancyDate), and a 'Contact applicants' button that opens the Buildium record. Include summary cards showing total vacancies, average days vacant, and total vacant rent roll.
Copy this prompt to try it in Lovable
Build a maintenance request tracker with real-time status updates
Tenants and owners want to track maintenance request status without logging into Buildium. A Lovable-built tracker shows open work orders, assigned vendors, scheduled dates, and completion status, updating in near real-time by polling the Buildium API.
Build a maintenance tracker for property owners. Using the Buildium API with BUILDIUM_API_KEY, the work orders endpoint is GET /workorders with optional filters for propertyId, status, and dateRange. Work order objects have: id, title, description, status (Open/In Progress/Completed), priority, requestedBy, assignedToVendor, scheduledDateTime, completedDateTime, propertyId, unitId. Build an owner view showing all maintenance requests across their properties grouped by status, with priority badges, vendor names, scheduled dates, and a cost estimate field (if available). Allow filtering by property and date range.
Copy this prompt to try it in Lovable
Troubleshooting
Buildium API returns 401 Unauthorized on all requests
Cause: The Basic Authentication credentials are incorrect or the client ID and secret are swapped, or Buildium API access is not enabled on the account plan.
Solution: Verify in Buildium Settings → API Access that API access is enabled and the credentials are active. Check that BUILDIUM_CLIENT_ID is the client ID (not the email or username) and BUILDIUM_CLIENT_SECRET is the client secret. The Base64 encoding in the Edge Function must encode 'clientId:clientSecret' in that exact order with a colon separator. Also verify your Buildium plan includes API access — the Starter plan may not include it.
1// Verify basic auth construction:2const authString = `${clientId}:${clientSecret}`;3const authHeader = `Basic ${btoa(authString)}`;4console.log('Auth header prefix:', authHeader.substring(0, 15)); // Should be 'Basic dXNlcjpw...'GET /units returns an empty array even though units exist in Buildium
Cause: Buildium's /units endpoint may require a buildingId or propertyId filter, or the units have a different status than the default filter allows.
Solution: Try the request without any status filter first: GET /units?buildingId={your_property_id}. If units appear, add the status filter back. For vacant units, the filter value may need to be 'Vacant' (capitalized). Check the Buildium API documentation for the exact filter parameter names and accepted values for your Buildium version.
Work order creation returns 422 Unprocessable Entity
Cause: A required field is missing or formatted incorrectly. Buildium has required fields for work orders that may not be obvious from the response.
Solution: Check the Buildium API documentation for the required fields on POST /workorders. Common required fields are: title, type, priority, and at minimum one location identifier (propertyId). The priority value must match Buildium's enum exactly (Low, Normal, High, Emergency — capitalized). Review the error response body from Buildium — it typically includes a list of validation errors with field names and messages.
Dashboard loads slowly when fetching data for many properties
Cause: Sequential API calls for each property's units and leases multiply the latency — 10 properties with 2 API calls each means 20 sequential requests.
Solution: Use Promise.all() to fetch all property-level data in parallel rather than sequentially. Fetch all properties first, then use Promise.all() to fetch units and leases for all properties simultaneously. This reduces multi-property dashboard load from O(n) to O(1) in terms of network round trips.
1// Parallel fetching for all properties2const properties = await fetchBuildium('/properties');3const unitsByProperty = await Promise.all(4 properties.map(p => fetchBuildium(`/units?buildingId=${p.id}`))5);6// unitsByProperty[i] corresponds to properties[i]Best practices
- Use Buildium's vendor management system alongside the API — work orders should reference actual Buildium vendor accounts by assignedAccountId rather than free-text vendor names
- Implement polling (every 30-60 seconds) rather than page-level re-fetching for work order status updates in the tenant portal — Buildium does not support webhooks on all plans
- Match tenants to their Buildium records by email address when building a tenant portal — use the tenant's Supabase Auth email to filter Buildium tenant records
- Use Buildium's pagination (pagesize and pagenumber parameters) for all list endpoints rather than expecting a single response with all records
- Display Buildium work order IDs prominently in the tenant portal — property managers reference these IDs in phone conversations and emails
- Implement role-based access in Lovable so tenants see only their own data (filtered by leaseId/unitId) and managers see all properties
- Cache Buildium property and unit data in Supabase — it changes infrequently and reduces API calls for dashboards that load property-level data
- Test maintenance request submission in Buildium's interface before launching the tenant portal to ensure work orders appear correctly in the property manager's workflow
Alternatives
Yardi serves large enterprise property managers with thousands of units — choose it over Buildium when managing large institutional portfolios requiring enterprise-grade accounting and reporting.
Propertybase is a Salesforce-based brokerage CRM focused on sales transactions rather than property management — choose it for managing the buying and selling process rather than ongoing tenant management.
CoStar provides market data and analytics for acquisition research — use it alongside Buildium when your workflow involves both acquiring new properties and managing existing ones.
Frequently asked questions
Does Buildium support webhooks for real-time updates to my Lovable app?
Buildium offers webhook support on Growth and Premium plans for certain events like new maintenance requests and lease updates. If your plan includes webhooks, you can create a Lovable Edge Function as the webhook endpoint — Buildium sends a POST request when the event occurs, and your Edge Function updates the Supabase database or sends a notification. For plans without webhooks, implement polling in your React components to check for updates periodically.
Can I use the Buildium integration for HOA management in addition to rental properties?
Yes, Buildium supports HOA and community association management alongside residential rentals. The API covers HOA-specific objects like community associations, owners (rather than tenants), dues, and violations. The same Edge Function proxy works for HOA endpoints — you'll use different endpoint paths (/associations instead of /buildings) and different field names for owners and dues rather than tenants and rent. Check the Buildium API documentation for the full HOA endpoint list.
How do I handle the case where a Buildium tenant record doesn't exist for a Lovable portal user?
Implement a matching flow during the tenant portal login: after Supabase Auth authenticates the user by email, query Buildium's tenant API with the email as a filter (GET /tenants?email={email}). If no tenant record exists, show a message asking the tenant to contact their property manager to link their account. Do not create Buildium tenant records automatically from the portal — tenant creation in Buildium should go through your onboarding workflow with lease details.
Can I display Buildium accounting data like rent payment history in the tenant portal?
Yes, Buildium's API includes accounting endpoints for ledger entries, payments, and charges. The relevant endpoint is GET /leases/{leaseId}/charges and GET /leases/{leaseId}/payments to show payment history. Note that displaying financial ledger data to tenants in a portal creates legal obligations in some jurisdictions — ensure your payment history display complies with local landlord-tenant law requirements for financial disclosures.
What is the rate limit for Buildium's API?
Buildium's API rate limits vary by plan. Generally, expect limits around 100-1,000 requests per minute. For property management dashboards with moderate traffic (50-200 active users), caching Buildium data in Supabase and refreshing it every few minutes is strongly recommended. High-frequency requests from multiple concurrent users can quickly exhaust rate limits, causing 429 errors that break the dashboard experience.
Talk to an Expert
Our team has built 600+ apps. Get personalized help with your project.
Book a free consultation