Vesta Property
Personal finance platform for landlords

Project overview
Vesta Property is Personal finance platform for landlords. Visibility over your property finances that makes the difference Built with high standards for performance, security, and intuitive user experiences, the platform is engineered to support mission-critical workflows and seamless scale.
What was the problem or pain point
Client Dilemma & Technical Bottleneck
Vesta Property created the UK's first institutional marketplace for residential tenanted investment properties. Traditionally, buying or selling an occupied buy-to-let property required evicting the tenant, incurring months of lost rental income, and enduring 6+ months of opaque legal conveyancing. The client needed a digital investment platform that allowed landlords and institutional funds to trade tenanted properties seamlessly with existing tenants remaining in place, complete with automated yield calculations and digital legal diligence rooms.
What we suggested to the client
Solid Sphere Architectural Recommendation
Solid Sphere recommended developing a comprehensive digital real estate transaction portal. We proposed building an automated property valuation and rental yield engine, a secure virtual data room (VDR) for tenancy agreements and structural surveys, and an automated conveyancing pipeline integrated with DocuSign and AML/KYC identity verification.
What made this project challenging
Digitizing institutional and private residential tenanted property transactions from start to finish
Displaying complex financial yield calculations, tenancy history, and legal packs transparently
Complying with strict UK anti-money laundering (AML) and Know Your Customer (KYC) regulations
Managing legally binding digital offers, reservation deposits, and contract exchanges
What was implemented and how it was implemented
Step-by-Step Technical Execution
We developed the web platform using React for the investor-facing marketplace and Ruby on Rails for the transactional and compliance backend. We built property listing tools that automatically pull land registry data, calculate gross and net rental yields, and display historical tenancy occupancy rates. We engineered a secure Virtual Data Room with granular document access controls, allowing prospective institutional buyers to inspect tenancy contracts, EPC energy certificates, and safety records under non-disclosure agreements. We integrated automated anti-money laundering (AML) and identity checks for buyers and sellers, along with DocuSign API integration for executing legally binding heads of terms and reservation agreements. A customized Stripe payment pipeline handles refundable reservation deposits, locking property exclusivity during the diligence window.
How we delivered
Engineered comprehensive marketplace listing tenanted properties with dynamic gross/net yield models
Integrated automated AML/KYC identity verification for prospective domestic and overseas buyers
Built secure virtual data room for reviewing tenancy agreements, safety certificates, and titles
Developed digital reservation deposit workflow with automated escrow handling via Stripe
What did we use to implement it
Technology Stack & Technical Rationale
React provided an interactive, data-rich marketplace interface with dynamic yield calculators and interactive financial graphs. Ruby on Rails handled complex real estate transaction workflows, legal document permissions, and regulatory compliance. PostgreSQL stored property listings, tenancy documents, and audit logs. DocuSign API automated legal agreement execution. Stripe handled deposit escrow and transaction fee processing. AWS provided secure, scalable cloud hosting with S3 encrypted storage.
Key outcomes
Over £100M in tenanted property sales transacted
Reduced average transaction cycle from 16 weeks to 6 weeks
100% regulatory AML compliance verification
Zero-downtime property marketplace operations
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