Real estate APIs that connect your listings, transactions, and property data to the systems that use them.
We build API integrations for real estate companies — MLS/IDX data feeds, transaction management integration, property data APIs, and the connectivity layer between your CRM, your listings platform, and your transaction system. Fixed scope, fixed price.
Your listing data is in the MLS. Your transaction data is in Dotloop or DocuSign. Your CRM has neither. Your agents are copying the same information between three systems for every deal.
Real estate companies sit at the intersection of multiple data systems that were never designed to talk to each other. The MLS is the authoritative source of listing data — but MLS access is through RETS feeds or the newer RESO Web API, and integration requires MLS membership and RESO data standards compliance. The transaction management system (Dotloop, Skyslope, DocuSign Transaction Rooms) holds the contract, the timeline, and the document checklist for every active deal. The CRM (Follow Up Boss, Salesforce, HubSpot) holds the contact and pipeline data. The investor deal management tools (DealMachine, PropStream, REI Pro) hold the off-market lead data.
None of these systems sync automatically. An agent going under contract on a listing has to update the MLS, update the transaction management system, and update the CRM. Three data entries for one event. At 20 active deals per month, that's 60 data entries. At 200 deals per month, that's 600 data entries per month, and the error rate and omission rate in manual data entry means the CRM pipeline data is never fully accurate.
The highest-value integration for most real estate businesses is the one between the transaction management system and the CRM — so the pipeline view is accurate in real time based on transaction milestone progress, not based on agent self-reporting.
A real estate API integration that keeps your MLS listings, transaction management data, and CRM in sync — eliminating duplicate data entry and giving your team a single view of every listing and every deal.
MLS/RESO data feed integration
RESO Web API integration with your MLS — active listings, status changes (active, pending, sold), price changes, and new listings. Data normalised into your internal property data model. Listings displayed on your website or custom portal in real time with up-to-date MLS data.
IDX data feed processing
RETS or RESO feed configuration, data ingestion, and standardisation for IDX website display. Compliance with MLS IDX rules (attribution, display rules, refresh frequency).
Transaction management integration
Dotloop or Skyslope API integration — new transaction creation triggered by CRM deal stage advancement. Milestone data (offer accepted, inspection contingency removed, clear to close) synced back to CRM. Document checklist completion status visible in the pipeline.
CRM data sync
Follow Up Boss, Salesforce, or HubSpot integration for contact and pipeline data. New leads from your website routed to CRM with listing context. Deal stage updates based on transaction management milestones.
Property data enrichment
Property data APIs (Attom Data, CoreLogic, ZIMAS) for property details not available in the MLS — ownership history, tax assessment, permit history, zoning. Enrichment triggered on property save or transaction creation. Built on Next.js API routes, Postgres, RESO Web API, and REST integrations with Dotloop, Skyslope, and CRM platforms.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
A real estate API integration that keeps your MLS listings, transaction management data, and CRM in sync — eliminating duplicate data entry and giving your team a single view of every listing and every deal.
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
Real estate brokerages and proptech companies operate at defined deal volumes with predictable agent ROI calculations. A data integration investment with a defined cost is evaluable against the time-per-deal reduction it delivers. Fixed scope, fixed price.
Related engagements.
Questions, answered.
MLS data access for integration requires MLS membership (for a real estate brokerage) or an IDX/RETS data license agreement (for technology vendors). The MLS approval process varies by board — some approve data feeds quickly, others have a review process of 4–8 weeks. We initiate the data access application in parallel with development.
Multi-MLS integration requires a separate data feed agreement with each MLS board and normalisation of each board's data model to your internal property model. We design the data normalisation layer to handle multiple boards with different field mappings as an extensible integration rather than a one-off connection.
We integrate with the CRM your business uses as a platform standard. If you have agents using different CRMs, the integration is with the platform-standard CRM — the integration is between systems, not between individual agent tools.
MLS data feed integration, transaction management connectivity, and CRM sync typically runs $30k–$65k. Multi-MLS scope and property data enrichment integrations are the main variables. Fixed-price.
10 to 14 weeks for a production real estate integration layer with MLS and transaction management connectivity.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.