Real Estate Systems Integration - MLS, IDX, CRM, PMS, Payments & IoT
MLS, IDX, RETS, RESO, payment gateways, smart locks, IoT, accounting, CRM, PMS, and marketing automation wired into one clean operational layer. Stop paying for six systems that do not talk to each other. Stop having your team copy data between dashboards by hand. Every integration is built with event-driven architecture, audit logging, and a 99.95% uptime SLA.
100+ operators · 14 countries · A decade wiring real estate stacks
MLS / RETS / RESO specialists
99.95% uptime SLA
30+ MLS feeds integrated
What does a real estate systems integration agency do?
We integrate the systems that run a real estate business - MLS, IDX, RETS, RESO, payment gateways, accounting, CRM, PMS, smart locks, IoT, and marketing automation - into one clean operational layer with a single source of truth. 99.95% uptime SLA across 100+ engagements.
Trusted by 50+ operators, PropTech companies & digital-first brands
Five integration services under one roof
Pick the integration closest to your operation. Click into the one that fits for a deeper scope, connector list, and an engagement outline.
Eight integration capabilities built for real estate
Every integration is designed around real estate data flows, not generic middleware patterns. Custom where complexity demands it, iPaaS where speed and simplicity make sense.
MLS, IDX, RETS, and RESO Web API
RESO Web API (modern), RETS legacy, IDX broker feeds, Bridge, Spark, MLS Grid, Trestle, ATTOM Data, CoreLogic, and HouseCanary. Over 30 MLS feeds integrated across the US and Canada including CRMLS, NWMLS, Bright MLS, Stellar MLS, Heartland MLS, REBNY (NY), MRED (Chicago), and CREA (Canada).
Payment gateway integration
Stripe, Razorpay, PayU, Cashfree, PayPal, Plaid, ACH, UPI, and GCC payment rails. Subscription billing, deposits, partial payments, and reconciliation built into your operational workflow. Multi-currency where required.
Smart home and IoT integration
Smart locks (August, Yale, Igloohome, Latch, Nuki), thermostats (Nest, Ecobee), access systems (Brivo, OpenPath, Kisi), and IoT sensors. MQTT, Zigbee, Z-Wave, REST, and Matter protocols supported.
Accounting and ERP integration
QuickBooks, Xero, Tally, NetSuite, SAP, Zoho Books, and Wave. Real-time sync of invoices, receipts, and reconciliation. Multi-currency where needed. Connected to your PMS and CRM for end-to-end financial visibility.
CRM, PMS, and marketing sync
Bidirectional sync across Salesforce/HubSpot/Zoho and Yardi/AppFolio/RealPage/Buildium and Mailchimp/Klaviyo/Customer.io. Field mapping, conflict resolution, and audit logs ensure data consistency across every system.
API development
REST and GraphQL APIs designed for your partners and integrators. OpenAPI specs, sandbox environments, rate limiting, OAuth2/JWT authentication, and versioning strategy. Detailed on the API development sub-service page.
Data migration
ETL pipelines, deduplication, schema mapping, validation, parallel-run, and rollback. From any source including legacy databases, spreadsheets, and third-party tools. To any destination.
iPaaS implementation
The right integration platform for your scale and team. Workato for enterprise complexity, Make or Zapier for quick wins, Boomi or Mulesoft when compliance demands it. Most stacks are 70% iPaaS, 30% custom.
An integration solution for every stage of your real estate operation
- 01
Stack is disconnected
Six systems running independently. Data is copied between dashboards by hand. Integration connects everything into one operational layer so staff stop being the middleware.
- 02
Adding a new system
A new CRM, PMS, payment gateway, or smart-lock system needs to plug into the existing stack without breaking what already works.
- 03
Migrating data between systems
Moving from one PMS to another, one CRM to another, or from spreadsheets to structured platforms. Data migration with field mapping, deduplication, and parallel-run validation.
- 04
Scaling to new markets
Expanding into regions with different MLS feeds, payment gateways, currencies, or compliance requirements. Integrations are extended or rebuilt for multi-market operations.
- 05
Building an API product
The platform needs to expose data to channel partners, aggregators, or third-party developers through documented, authenticated APIs.
- 06
Replacing manual processes at scale
Manual data entry, CSV exports, and email-based workflows are consuming hours that could be deployed on higher-value work. Automation replaces the repetitive transfer of data between systems.
Not sure which stage fits your operation? Book a strategy call and the team will identify exactly where to start.
Built for real estate operators. Exclusively
- Coliving and BTR operatorsWiring PMS, payments, smart locks, accounting, and tenant apps into one flow. Data moves automatically from booking through payment through access control through accounting.
- BrokeragesIntegrating MLS/IDX feeds, CRM, dialer, transaction management, and commission engines. Listing data flows from MLS to website to CRM without manual re-entry.
- Real estate developersConnecting CRM, channel-partner platform, payment gateway, and ERP. Lead capture, inventory, and commission data unified across the project lifecycle.
- Property managersIntegrating PMS, accounting, work-order systems, owner-portal, and vendor management. Tenant data, financial data, and maintenance data flowing between systems automatically.
- PropTech foundersIntegration-heavy products that need API-first architecture. Marketplace platforms, data aggregators, and SaaS tools that connect to MLS, payment, and third-party data sources.
- Investment platformsIntegrating KYC, payments, accounting, and document signing into one investor flow. Capital calls, distributions, and compliance data moving through a single pipeline.
Everything included in your integration engagement
Systems map and data-flow audit documenting every integration point, data direction, and transformation rule.
Build-versus-iPaaS recommendation per integration, with cost and maintenance implications explained.
Custom integrations with event-driven architecture, retry logic, error handling, and full audit logs.
iPaaS implementation on Workato, Make, Zapier, Boomi, or Mulesoft where speed and simplicity fit.
MLS/IDX/RETS feeds with normalisation, deduplication, and search-ready indexes.
Payment gateway wiring with multi-currency, reconciliation, and accounting sync.
Smart lock and IoT connections with access code management and event logging.
Monitoring and alerting with 99.95% uptime SLA, partner-API change management, and quarterly architecture reviews.
Six phases. Four to twelve weeks
- 01
Discovery (weeks 1 to 2)
Systems map, data-flow audit, integration backlog, and a build-versus-iPaaS decision per integration. Every connection is evaluated for the right approach before any code is written.
- 02
Architecture (weeks 3 to 4)
Integration patterns (event-driven, batch, API-direct), error handling, retry logic, observability, and security model designed and reviewed before implementation.
- 03
Build (weeks 5 to 10)
Sprints per integration, sandbox-first, with replayable event streams and full audit logs. Each integration is built, tested, and validated independently before connecting to the broader stack.
- 04
Validate (weeks 11 to 12)
Reconciliation reports, edge-case testing, load testing, and a parallel-run period before flipping production. Both old and new data flows run simultaneously for verification.
- 05
Cutover (week 13)
Production cutover with monitoring, rollback plan, and on-call coverage. Nothing goes live without sign-off from both teams.
- 06
Operate (ongoing)
24/7 monitoring, alert tuning, partner-API change management, and quarterly architecture reviews. The integration layer stays healthy as vendor APIs evolve.
What operators saw after integration
6+ hrs
Per week saved per property manager (unified PMS, payments, and locks).
35%
Faster deal close after MLS, CRM, and e-sign integration (brokerages).
99.95%
Integration uptime SLA across operated stacks.
4 to 1
Vendor consolidation typical for operators replacing fragmented tools.
Every brief is scoped to the operator's goals
Fixed pricing is not published because every engagement is shaped to the operator's stage, scope, and target outcomes. Book a strategy call and the team shares a tailored scope, timeline, and investment range within five business days.
The integration stack
iPaaS
- Workato
- Boomi
- Mulesoft
- Tray.io
- Make
- Zapier
Custom integration
- Node.js
- Python
- Go
Event streaming
- Kafka
- RabbitMQ
- AWS EventBridge
- Redis Streams
API gateways
- Kong
- AWS API Gateway
- Apigee
ETL
- Airbyte
- Fivetran
- dbt
- Custom Python
Monitoring
- Datadog
- Sentry
- Grafana
- OpenTelemetry
Smart-home protocols
- MQTT
- Zigbee
- Z-Wave
- Matter
- REST / Webhook
How connected is your real estate tech stack?
Most property companies run five to ten tools that do not talk to each other. Data gets stuck in silos, teams duplicate work and nobody has a single view of the business. Find out how ready your stack is for integration.
PropTech readiness index
12 factors covering your current systems, data architecture, API readiness, automation maturity and integration complexity. See exactly where the gaps are before we connect your stack.
CRM readiness assessment
Your CRM sits at the centre of every integration. Score your sales stack across lead capture, pipeline management, automation and integration readiness to see if it can handle what you are connecting to it.
No login · Free tool · Results in five minutes
Services most operators pair with systems integration
Integration rarely ships in isolation. Most operators combine an integration engagement with one or more of these services.
Frequently asked questions
Should we use an iPaaS like Workato or build custom?
iPaaS when integrations are simple, mostly transactional, and your team will maintain them. Custom when you need event-driven architecture, complex transformations, or partner-facing APIs. The team picks per integration. Most stacks are 70% iPaaS, 30% custom.
What about MLS rules. Is RESO Web API enough?
RESO Web API is the modern standard and covers most boards. Some MLSs still require RETS legacy feeds. The team has integrated 30+ MLS feeds across the US and Canada and handles the board-specific rules, data use agreements, and compliance requirements.
Can you integrate smart locks across our portfolio?
Yes. Igloohome, Salto, Latch, August, Yale, and Nuki are all supported. Access codes, guest access, vendor access, and event logging are wired into your PMS and tenant app.
What happens when a partner API changes?
The operate phase includes partner-API change management. Breaking changes are detected through monitoring, evaluated for impact, and resolved before they affect production data flows. Quarterly architecture reviews catch deprecation notices early.
How do you handle data conflicts between systems?
Conflict resolution rules are defined during the architecture phase. Field-level priority, timestamp-based resolution, and manual review queues are configured based on which system is the source of truth for each data type.
Ready to make your stack talk to itself?
Share your systems map, your pain points, and the integrations that matter most. The team comes back with a scoped proposal within five business days covering architecture, timeline, and investment.
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