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Industry: PropTech

Software development for PropTech

Engineering for estate agencies, landlords, property managers, build to rent operators, and real estate platforms. Multi tenant CRMs that integrate with Rightmove, Zoopla, and US MLS feeds. AVMs that quote with honest confidence intervals. Tenant portals that handle rent and maintenance without a phone call. Smart building IoT for HVAC, access, and energy. Built with the UK, US, and UAE property markets in mind.

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Industry challenges we solve

Property is data heavy and process bound. Most of the technology friction comes from integrations that drift, valuations that overpromise, and portals that age faster than the underlying business model.

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Lead leakage across portals. Rightmove, Zoopla, OnTheMarket, the agency website, walk ins, and phone calls all feed leads in different shapes. Without a unified inbox, only 60% of enquiries are followed up within 24 hours. The rest go cold.
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AVMs that lie with three decimal places. A model trained on national data quotes a single number with no confidence interval. Underwriters trust it, the loan over commits, and the portfolio takes the loss when prices correct.
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Manual lease admin. AST renewals tracked on a spreadsheet, deposit registration done by a junior staffer at the last minute, EICR certificates expiring before anyone notices, and a Section 21 served on the wrong template.
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Maintenance requests on WhatsApp. Tenants message the property manager, photos go to one inbox and contractor dispatch to another. Repairs slip through the cracks and the next thing is a Housing Ombudsman complaint.
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Smart building hardware in islands. KNX in the lobby, BACnet for HVAC, a Wi-Fi door lock supplied by the developer's brother in law. Three apps for the building manager and no consolidated energy view.
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Manual property matching. A buyer registers their requirements, an agent mentally scans the list, and the strongest match sits unsurfaced because nothing watches the catalogue against the brief.
Capabilities

Our PropTech capabilities

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Real estate CRM & lead routing

Multi tenant CRMs with unified inbox across Rightmove, Zoopla, OnTheMarket, website forms, and phone calls (via Twilio). AI lead scoring, automated property matching with commute calculations, and white label branding per agency.

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MLS & portal integrations

UK Rightmove and Zoopla via Blueprint, US MLS via RESO Web API, UAE Bayut and Property Finder. Inbound lead capture, outbound listing feeds, photo and floorplan sync, and duplicate detection across overlapping portal coverage.

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AVM with honest confidence

XGBoost and LightGBM models trained on historical sale and rental data, enriched with EPCs, comparables, school catchments, and transport accessibility. Hyperlocal models per postcode or zip code with explicit confidence intervals.

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Lease & tenancy management

AST renewals, deposit registration with TDS/DPS/MyDeposits, Section 21 and Section 8 workflows, right to rent checks, EICR and gas safety certificate tracking, and document storage with audit trail. US flows aligned to state landlord-tenant law.

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Tenant portals & mobile apps

Web and React Native portals for rent payment via Stripe or GoCardless direct debit, maintenance requests with photo upload, contractor dispatch, and document access. Push notifications for renewal, inspection, and rent reminders.

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Smart building IoT

Integration with KNX, BACnet, Aqara, Shelly, and Tado for HVAC, lighting, access control, and energy monitoring. Single dashboard for building managers, anomaly detection, and predictive maintenance triggers based on consumption patterns.

Compliance & regulatory considerations

Property regulation is local and granular. We design around the obligations that touch software directly: data protection, financial conduct for mortgage tech, anti money laundering for high value transactions, and the housing law that frames every tenancy.

GDPR & UK GDPR FCA awareness (UK mortgage tech) AML / CDD for property Housing Act 1988 (UK AST) Tenant Fees Act 2019 (UK) Right to Rent (UK) eIDAS for e-signature (EU/UK) UAE RERA awareness

UK mortgage technology that touches advice or product comparison is FCA regulated. We are not a regulatory consultancy and we will not pretend to be one. We are engineering aware of the FCA Handbook clauses that drive software design: MCOB rules for mortgage advice, TCF and Consumer Duty for retail customers, and SYSC operational resilience. We deliver immutable audit logs, role based access, and the evidence base your authorised firm needs at audit. For appointed representatives we coordinate with the principal firm's compliance team rather than replacing them.

Anti money laundering bites at high value property transactions. Estate agencies in the UK are supervised by HMRC under the Money Laundering Regulations 2017, with customer due diligence required on both buyers and sellers above the threshold. We integrate Onfido, Sumsub, ComplyAdvantage, and SmartSearch for ID verification, sanctions and PEP screening, source of funds documentation, and ongoing monitoring. Records are retained for 5 years as the regulations require.

UK housing law shapes the tenancy product. AST renewals must be served on the correct prescribed forms, deposits must be registered with TDS, DPS, or MyDeposits within 30 days, the Tenant Fees Act bans most charges, and right to rent checks require the digital flow now mandated by the Home Office. We bake these constraints into the workflow rather than into a disclaimer at the bottom of the page. UAE clients work to RERA registration and Ejari requirements; US tenancy follows state level landlord-tenant statutes that we map per state during scoping.

Tech stack we use for PropTech

Predictable web stack for portals and CRMs. Python and gradient boosted models for AVMs. Native mobile for tenant and field apps. Standard signing and KYC providers wired in by default.

Node.js 20 + TypeScript React 18 + Next.js React Native + Expo Python + XGBoost / LightGBM PostgreSQL 16 + PostGIS Redis + ElasticSearch Stripe + GoCardless direct debit DocuSign / HelloSign / PandaDoc Onfido + ComplyAdvantage Matterport + Giraffe360 Mapbox + Google Maps AWS + Vercel
Real Estate / Multi Tenant SaaS UK proptech · 14 weeks · 5 engineers

Multi tenant CRM SaaS for UK independent estate agencies

A UK proptech wanted to build a CRM specifically for independent agencies of 2 to 15 agents. Existing tools (Reapit, Alto, Jupix) were expensive and built for chains. We shipped a white label multi tenant SaaS in 14 weeks: schema per tenant on PostgreSQL, unified inbox ingesting Rightmove, Zoopla, and OnTheMarket, an XGBoost lead scoring model trained per agency, automated property matching with Google Maps commute calculations, and Stripe Billing for tiered subscriptions. The launch cohort of 8 agencies lifted lead to viewing conversion 40% and dropped average lead response time below 5 minutes.

40%Higher lead to viewing rate
<5 minAvg lead response time
8Agencies onboarded at launch
14 wksConcept to production

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FAQ

Common questions

Yes. In the UK we integrate with Rightmove, Zoopla, OnTheMarket, and Boomin (where still relevant) for both inbound lead capture and outbound listing feeds via Blueprint and equivalent partner APIs. In the US we integrate with MLS systems via RESO Web API (compliant with the RESO Data Dictionary), and we have shipped feeds against Bridge Interactive, Spark, and direct vendor APIs. UAE clients commonly integrate with Bayut, Property Finder, and Dubizzle. We handle duplicate detection, photo deduplication, and the inevitable schema drift when a portal updates its API.
Yes. Our AVM stack uses gradient boosted models (XGBoost, LightGBM) trained on historical sale and rental data, enriched with comparable sales radius, EPC certificates (UK), school catchment scores, transport accessibility, and crime statistics. Hyperlocal models trained per postcode or zip code consistently outperform national averages. We are honest about confidence intervals: a model that says GBP 425,000 plus or minus GBP 18,000 with 80% confidence is more useful than a single number that pretends to be exact. We support backtesting against your historical transactions before go live.
Yes. We have shipped a multi tenant CRM SaaS for UK estate agencies in 14 weeks: schema per tenant on PostgreSQL, white label branding, AI lead scoring trained on each agency's history, automated property matching with commute time calculations, Rightmove and Zoopla ingestion, and Stripe billing for tiered subscriptions. The launch cohort lifted lead to viewing conversion 40%. We design for 2 to 50 agent agencies; larger chains usually need a different architecture.
Yes. Tenant portals on web and React Native cover lease documents, rent payment via Stripe or GoCardless direct debit, maintenance requests with photo upload and contractor dispatch, document storage (gas safety certificates, EPCs, EICRs), and renewal flows. Lease management covers AST renewals in the UK, deposit registration with TDS/DPS/MyDeposits, Section 21 and Section 8 workflows, and right to rent checks. US clients get equivalent flows aligned to state landlord-tenant law and HUD requirements where applicable.
Yes. Matterport and Giraffe360 for virtual tours embedded into listing pages with deep linking for measurements. DocuSign, HelloSign (Dropbox Sign), and PandaDoc for e-signature on leases, sale agreements, and tenancy documents, with audit trail and Qualified Electronic Signature (QES) flows where eIDAS requires it. For smart buildings we integrate with KNX, BACnet, and IoT platforms (Aqara, Shelly, Tado) for HVAC, access control, and energy monitoring.
A focused listing platform with portal feeds, basic CRM, and a public search experience typically ships in 10 to 12 weeks with a 3 person team. A multi tenant agency CRM with AI lead scoring runs 12 to 14 weeks. Tenant portals with payments and maintenance workflows take 8 to 10 weeks. AI agents handle scaffolding, schema migrations, and tests; senior engineers own the data model, the AVM if applicable, and the integration boundaries with portals and signing providers.
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