Enterprise SaaS Build — £59,999 to £99,999 │ What Affects the Price │ UK Company │ tackly.co.uk

Enterprise SaaS development at a UK agency costs £100,000 to £250,000. By Design UK delivers the same quality, the same accountability and the same results — without the agency overhead.

Our Enterprise range starts at £59,999 for a comprehensive platform with complex features and integrations. It reaches £99,999 for the most complex builds with multiple user types, bespoke design, compliance requirements and full documentation. Every Enterprise project begins with a free discovery session.

Message us to arrange a no-obligation discovery call. We will assess your requirements and provide a fixed-price proposal within 5 business days.

What Is Included

• Everything in Growth — all features, booking, analytics, PWA, SEO, multi-currency
• Unlimited features — no cap on scope, built to whatever your platform requires
• Multiple user types — admin, subscriber, staff, partner, API user — fully role-based
• Fully bespoke UI/UX design — custom design system, not a template
• Complex third-party integrations — CRM, ERP, accounting software, government APIs
• Advanced compliance — GDPR audit trail, FCA-ready architecture, data residency options
• Enterprise infrastructure — load balancing, CDN, staging environment, CI/CD pipeline
• Full technical and user documentation — architecture docs, admin guides, video walkthroughs
• Staff training and onboarding sessions
• 12-month Premium Care support included in the Enterprise price

What Affects Your Price Within This Range

• Number of features and complexity — more features means more time
• Third-party integrations — connecting to external APIs adds cost
• Custom design requirements — fully bespoke design costs more than branded template
• Timeline — urgent delivery under 6 weeks carries a rush premium
• IP ownership — full source code ownership adds to the base price

Message us with your requirements and we will give you a fixed price within 24 hours.

Why By Design UK

• Registered UK company on Companies House — fully accountable and verifiable
• Formal contract and invoice — staged payments, never full payment upfront
• Team delivery — not one person, projects never stall or disappear
• 0203 951 4908 — phone line available during UK business hours
• Ongoing care plans from £99/month — we do not disappear after handover
• tackly.co.uk — visit right now, that is our standard of work