Service
Real Estate Software Development: MLS Integration, Brokerage Platforms and AI Agents
Real estate technology has its own physics: MLS boards with different RESO dialects, listing data that changes by the minute, photos that expire, agents who live in their phone, and compliance rules on how listings may be displayed. I've built for this world at scale, as the lead engineer and architect of REConnect, a platform serving 100+ brokerages and 20,000+ agents, and as a core developer for Brown Harris Stevens in New York.
The work ranges from the data layer (RESO Web API replication, normalization across boards, media pipelines) to the products agents and clients touch (single-listing websites, IDX search, seller reports, client portals, brokerage CRMs) to the AI layer on top: support agents that resolve about 90% of tickets, listing-aware chatbots and MCP tools that act on brokerage systems safely.
What you get
Listings from any MLS board in one canonical model, synced incrementally and kept fresh.
Agent and client products that rank in search and load fast on phones.
Brokerage CRM and portal features with tenant isolation per brokerage.
AI agents grounded in live listing and account data, with audit trails.
Deliverables
- 01
RESO Web API / MLS integration with per-board adapters and incremental sync
- 02
Listing, media and agent data pipelines (normalization, dedupe, CDN-hosted photos)
- 03
IDX search, single-listing websites, seller and market reports
- 04
Multi-tenant brokerage platform or CRM (Laravel or NestJS, React / Next.js)
- 05
WordPress / Gutenberg listing blocks for brokerage marketing sites
- 06
AI support and listing agents (RAG, tool calling, MCP) with role-aware access
Stack
- RESO Web API
- Laravel
- NestJS
- Next.js
- MySQL
- Redis
- AWS
- WordPress
- Claude API
- MCP
Where I've done this
- Built at SL Tech
REConnect
Real estate MLS data platform serving 100+ brokerages and 20,000+ agents, with AI agents handling about 90% of support tickets.
- Core developer
Brown Harris Stevens
Agent and client tools for a New York luxury real estate brokerage, plus a Gutenberg plugin with 70+ custom blocks powering its content site.
FAQ
Which MLS boards have you integrated?
Multiple boards through the RESO Web API, each with its own adapter. The pattern matters more than the list: once the canonical model and adapter structure exist, a new board is a few days of mapping and testing rather than a project.
Can you build an IDX or listing website that ranks on Google?
Yes. Listing pages are server-rendered or statically generated with full metadata and structured data, and media is served from a CDN. That is how marketplace and listing pages get indexed and stay fast.
What can AI realistically do for a brokerage?
Resolve the repetitive support load (sync status, account and billing questions), answer listing questions from live data, draft listing copy and reports, and take scoped actions through tools. On REConnect the support agent handles about 90% of tickets with an audit trail.