Marketplace & listing platforms
Listing portals with RESO Web API ingestion, search and filtering, map integrations, saved searches and Fair Housing-aware audience controls.
Industries GDPR RESO
PropTech Software Development Services for US & EU Developers, Brokers and Landlords
YuSMP Group builds proptech software for residential and commercial real estate operators in the US and EU: developers and homebuilders, brokerages, landlords and REITs, facility managers and ESG-reporting teams. Senior engineers deliver listing marketplaces with RESO Data Dictionary fidelity, lease and tenant portals, BIM and building-IoT integrations, and investor-facing analytics. TCPA and CAN-SPAM consent, GDPR and CCPA data subject rights, and EU CSRD ESG pipelines are part of the architecture — not a late patch.
Our PropTech practice serves four buyer profiles: developers and homebuilders running sales-office CRM, off-plan reservation and post-sale handover flows; residential and commercial brokers integrating MLS or national portals, lead distribution and TCPA-clean outreach; landlords and property managers digitizing lease, payments, work orders and tenant communications; and asset owners, REITs and facility teams needing building IoT, BIM/digital-twin integration and ESG reporting under EU CSRD. We treat TCPA, CAN-SPAM, GDPR, CCPA/CPRA and Fair Housing Act risk as engineering inputs, not legal afterthoughts. Explore how we deliver this through our Web Application Development service.
What we build
What we build
CRM for sales offices
Developer and broker CRMs with lead capture, TCPA-clean dialing, e-signature reservation flows and unit availability sync across channels.
Lease & tenant portals
Online lease signing, rent payments, work orders, document vault and resident messaging with WCAG 2.2 AA accessibility.
Building IoT & energy monitoring
BACnet, KNX, Modbus and LoRaWAN gateways, time-series ingestion, alerts and energy-intensity dashboards under ISO 50001.
BIM & digital twin integrations
Autodesk APS, IFC 4 and bSDD pipelines into operations dashboards — occupancy, maintenance, space planning and embodied-carbon tracking.
Investor-facing analytics dashboards
Portfolio performance, leasing pipeline, ESG metrics (ESRS E1) and EU Taxonomy alignment with auditor-friendly data lineage.
Segments
PropTech segments we serve
Real estate is not one market. A brokerage's MLS-driven lead engine and a REIT's ESG data pipeline share almost no requirements, so we scope each build around the segment's real constraints — the regulator, the integration surface and the peak-load pattern that actually breaks systems in that vertical.
Residential brokerage
MLS/RESO-driven listing sites, IDX/VOW feeds, lead routing and TCPA-clean outreach. We tune search relevance and Fair Housing-aware filters so agents convert without HUD exposure, and keep feeds resilient to nightly MLS schema changes.
Commercial real estate (CRE)
Deal-pipeline CRMs, rent-roll and stacking-plan tools, and tenant/broker portals for office, retail and industrial. Argus-style cash-flow inputs, lease abstraction and document vaults integrate with the accounting stack your asset managers already run.
Multifamily & property management
Lease signing, rent payments, work orders, screening and resident apps at portfolio scale. We integrate with Yardi, RealPage and AppFolio, and design payment flows that stay reconciled across thousands of units and mid-month move-ins.
Developers & homebuilders
Sales-office CRM, off-plan reservation, unit-availability sync and post-sale handover. e-Signature reservation flows, snag/defect tracking and buyer portals shorten the gap between reservation and closing across multi-phase releases.
REITs & investment platforms
Investor portals, portfolio analytics, distribution and capital-raise workflows with auditor-friendly data lineage. Accreditation checks, KYC/AML and Reg D/Reg S gating are built into onboarding, not bolted on before an audit.
Facility & ESG operations
Building IoT, digital-twin dashboards and CSRD/ESRS E1 reporting for operators managing energy, occupancy and carbon. BACnet, KNX and LoRaWAN telemetry feed EU Taxonomy and energy-intensity metrics that stand up to external assurance.
Compliance
Regulations & standards we work to
GDPR-aligned · ISO 27001 ready · SOC 2 Type II in progress · WCAG 2.2 AA · TCPA-safe
TCPA CAN-SPAM GDPR CCPA / CPRA MLS / RESO Data Dictionary 1.7 RESO Web API Fair Housing Act (US HUD) ePrivacy / PECR EU CSRD ESRS E1 climate EU Taxonomy (buildings) ISO 27001 ISO 50001 (energy) WCAG 2.2 AA ADA Title III (websites) EPBD (EU buildings) SOC 2 Type II
Technology
Technology stack
We standardize on a boring, well-supported stack so your platform is still maintainable after the launch team rotates off — and we pick each layer for the integration and load realities of real estate, not for novelty.
Frontend
React and Next.js with server-side rendering for SEO-critical listing pages, TypeScript throughout, and map layers on Mapbox GL or Google Maps. WCAG 2.2 AA is enforced in components, not audited after the fact.
Backend & APIs
Node.js/NestJS and Python for data-heavy services, PostgreSQL with PostGIS for geospatial search, Redis for caching hot listings, and event streaming for feed ingestion. GraphQL or REST depending on the client surface.
Mobile
React Native or Flutter for resident, agent and inspection apps, with offline-first sync for field use where connectivity is unreliable. Native modules where camera, AR measurement or push reliability demand it.
Real-estate integrations
RESO Web API and Data Dictionary 1.7 for MLS, Autodesk APS and IFC 4 for BIM, and property-management APIs (Yardi, RealPage, AppFolio). Payment rails via Stripe, plus e-signature through DocuSign or Dropbox Sign.
Building IoT & data
BACnet, KNX, Modbus and LoRaWAN gateways into a time-series store (TimescaleDB or InfluxDB), with dbt-modeled pipelines feeding ESRS E1 and EU Taxonomy dashboards that keep full lineage for assurance.
Cloud & DevOps
AWS or Azure with infrastructure-as-code, containerized workloads on ECS/Kubernetes, and CI/CD with automated accessibility, RESO smoke and ESG-KPI regression gates. ISO 27001-ready controls and audit logging by default.
Process
Delivery process
1. Discovery
Workshops with sales, marketing, leasing, facility and ESG teams. We map listing sources, distribution channels, building systems and reporting obligations.
2. Architecture
RESO data model where applicable, TCPA/CAN-SPAM consent ledger, building-IoT topology and ESG data lineage map agreed before sprint one.
3. Build
Two-week sprints with RESO Certification smoke tests, accessibility gates, Fair Housing copy linting and ESG KPI calculation regression tests.
4. Launch & operate
Portal and broker rollout, leasing-team training, 24/7 on-call for payment flows, quarterly accessibility audits and CSRD data refresh cycles.
Cases
Selected PropTech case studies
Why YuSMP
Why real-estate teams choose YuSMP
Consent-first engineers
Senior engineers who understand TCPA express written consent, CAN-SPAM, GDPR lawful basis and CCPA opt-out — and design lead pipelines accordingly.
RESO and BIM fluency
RESO Web API, IFC 4 and Autodesk APS — production integrations with audit trails, not demoware that breaks on the next MLS update.
ESG-ready data pipelines
CSRD-aligned data lineage, ESRS E1 KPIs and EU Taxonomy alignment for buildings — built for auditor scrutiny, not slide decks.
Compliance posture: GDPR-aligned · CCPA/CPRA-ready · TCPA-safe · Fair Housing-aware · WCAG 2.2 AA · ISO 27001 ready · ISO 50001 aware · SOC 2 Type II in progress.
What clients say
A two-sided property marketplace needs bulletproof search, verified listings, and a back-office that the ops team can actually use. YuSMP built all three, plus an admin console that gave us full control over listings without a single developer ticket.
Smart-home HVAC control needs to be instant and fault-tolerant. YuSMP built the mobile app with real-time device state updates, scheduling, and remote override that works even on a slow cellular connection. User satisfaction scores jumped 25% post-launch.
FAQ
PropTech FAQ
Do you integrate with MLS and RESO Data Dictionary?
Yes. We integrate with US MLSs using RESO Web API and RESO Data Dictionary 1.7, validate against RESO Certification expectations, and also build EU equivalents on top of national portals (Rightmove, ImmoScout24, SeLoger, idealista) where MLS does not apply.
How do you handle TCPA and CAN-SPAM in lead nurturing?
We design consent capture, DNC scrubbing, quiet-hours and revocation flows to TCPA standards (express written consent for ATDS calls and texts) and CAN-SPAM for email. EU/UK flows run under GDPR and PECR with double opt-in.
What about Fair Housing Act risk in marketplaces?
Listing copy, targeting filters and ad delivery models are HUD-sensitive. We build filter guardrails, audit logging of protected-class proxies and HUD-aligned ad audience controls to lower discrimination risk.
Can you build BIM and digital twin integrations?
Yes. We integrate with Autodesk Forge/APS, IFC 4 and bSDD for BIM data, plus building IoT (BACnet, KNX, Modbus, LoRaWAN) to power digital-twin dashboards for operations, energy and occupancy.
How do you cover EU CSRD ESG reporting?
For landlords and REITs we build ESG data pipelines mapped to ESRS E1 climate disclosures, including embodied and operational carbon, energy intensity, and EU Taxonomy alignment for buildings (DNSH, technical screening criteria).
Do you handle CCPA/CPRA opt-out signals?
Yes. We honor GPC (Global Privacy Control), build CCPA/CPRA Do Not Sell or Share workflows, age-of-consent gating and California shine-the-light notices into US-facing properties.
Can you integrate with Yardi, RealPage or AppFolio?
Yes. For multifamily and commercial operators we integrate with Yardi, RealPage and AppFolio via their APIs and file feeds — syncing rent rolls, work orders, tenant records and payments while keeping reconciliation intact across large portfolios.
Do you support IDX and VOW feeds for brokerage sites?
Yes. We build IDX and VOW display rules on top of RESO Web API feeds, honoring each MLS's participation, attribution and commingling rules, and keep the sync resilient to the nightly schema changes that break brittle integrations.
Can you build accredited-investor and KYC/AML onboarding for a REIT platform?
Yes. We build accreditation verification, KYC/AML screening and Reg D / Reg S gating into investor onboarding, with audit-ready records and document lineage — designed for scrutiny rather than assembled the week before a review.
Do you build offline-capable field and inspection apps?
Yes. Inspection, leasing and facility apps use offline-first sync so field teams can capture data, photos and signatures without connectivity, with conflict resolution that reconciles cleanly once the device is back online.
Can you take over and modernize a legacy proptech platform?
Yes. We start with a technical audit and a strangler-fig migration plan so a dated portal or CRM can be modernized incrementally — without a risky big-bang rewrite and without freezing new listings or leasing operations during the transition.
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