React, Supabase & Netlify SaaS Builds for UK Businesses

Building a SaaS platform on the right stack from day one separates products that scale from products that stall. At By Design UK — registered at Office 13, 25 Mollison Avenue, Enfield EN3 7LW — we architect and deliver production-grade SaaS platforms using React, Supabase and Netlify for UK founders, operators and enterprise teams. Our projects range from £18,000 to £650,000+, scoped to your product roadmap, not a generic template.

Why Is React, Supabase and Netlify the Right Stack for a UK SaaS?

This stack delivers speed, scalability and developer maintainability without vendor lock-in. React provides a mature, component-driven frontend with a vast ecosystem. Supabase brings a fully managed PostgreSQL backend with built-in authentication, row-level security and real-time subscriptions — all designed with GDPR-aligned data controls that matter to UK businesses. Netlify handles CI/CD deployment, edge functions and global CDN delivery so your platform loads fast for UK and international users alike. Together they reduce infrastructure overhead while giving your engineering team full ownership of the codebase.

What Does a SaaS Platform Build Actually Include?

Every engagement starts with a scoping phase where we define user roles, data models, core workflows and integration requirements. From there we move into UI design, Supabase schema architecture, React frontend development and Netlify deployment configuration. Deliverables typically include multi-tenant or single-tenant database design, role-based access control, subscription billing integration, admin dashboards and a documented handover. Our proof of delivery is live in the market: Tackly.co.uk is a SaaS platform we built and continue to support, currently active across 25 industries in the UK.

How Much Does a React Supabase SaaS Build Cost in the UK?

SaaS builds at By Design UK are priced from £18,000 for focused MVP-scope platforms and extend to £650,000+ for enterprise-grade products with complex integrations, multi-region infrastructure and dedicated support agreements. After launch, ongoing development and platform management is available through our monthly SaaS support plans from £797 per month, which include feature iterations, monitoring, security updates and priority response SLAs.

What Happens After Your SaaS Goes Live?

Launch is the beginning of the product lifecycle, not the end. Our support plans ensure your Supabase database stays optimised as usage scales, your React frontend stays current with dependency updates, and new features ship on a reliable cadence. We act as an embedded technical partner rather than a ticket-based support desk.