Windsor · Berkshire · Custom builds

    Custom Web Development in Windsorfor businesses that have outgrown templates

    Bespoke React applications, client portals and internal CRMs built in Windsor — replacing the spreadsheet sprawl and subscription stack that's slowing your team down. From £5,000.

    Projects from £5,000 · Fixed pricing · UK based

    There's a point where no template will do. You're re-keying the same client data into three systems, paying for five SaaS subscriptions that half-solve the problem, and your team's real process lives in a spreadsheet only one person understands. That's when custom web development in Windsor stops being a luxury and starts paying for itself.

    I build bespoke web applications on React and TypeScript with a Postgres backend, secure authentication, role-based permissions and an admin layer your team can actually operate. Typical Windsor and Thames Valley projects: client portals for professional services firms, quoting and job-tracking tools for trades and construction, booking and membership systems, and lightweight CRMs shaped around one specific workflow rather than a generic sales pipeline.

    Every build is fixed-scope and fixed-price in phases, so you're never signing a blank cheque. Phase one is the smallest version that removes your biggest bottleneck — usually live in 6–8 weeks — and we only build phase two once phase one is earning its keep.

    What's included

    Everything you need to launch

    Discovery workshop mapping your current process end to end
    Fixed-price, phased scope so budget never runs away
    React + TypeScript front end, Postgres database, secure auth
    Role-based permissions: staff, admin, client-facing views
    Automations: email notifications, PDF documents, scheduled jobs
    Integrations with tools you already use (accounting, calendars, payments)
    Handover documentation plus training for your team
    Ongoing development retainer available — never mandatory
    Custom development in Windsor

    What I build for Windsor and Thames Valley businesses

    Six custom engagements — all fixed-scope, all built and maintained personally.

    Bespoke web applications

    Full custom builds when your process genuinely doesn't fit off-the-shelf software: dashboards, workflows, approvals, document generation and reporting.

    Custom web apps

    Internal CRMs

    A CRM shaped around how your Windsor business actually sells and delivers — not a generic pipeline you have to bend your team around.

    CRM development

    Client portals

    Secure logins where clients see their projects, documents, invoices and progress — cutting the email back-and-forth that eats your week.

    Custom builds

    MVPs for founders

    Berkshire founder with a product idea? A focused MVP built to test the riskiest assumption fast, with a clear route to v2 if it lands.

    MVP development

    Integrations & automation

    Connecting accounting, calendars, payments and email so data stops being typed twice. Often the cheapest, highest-return work I do.

    Digital strategy

    Ecommerce with custom logic

    Selling products but needing bespoke pricing, configurators or trade accounts? Usually Shopify plus a custom layer rather than a full rebuild.

    Shopify designer Windsor
    Process

    How it works

    01

    Process mapping

    A paid discovery session in Windsor or by Zoom documenting your workflow and the real bottleneck.

    02

    Phased proposal

    Fixed price and timeline for phase one only, with later phases costed but never committed early.

    03

    Build in sprints

    Two-week sprints with a working demo link at the end of each — you steer as it takes shape.

    04

    Launch & iterate

    Data migration, training, documentation, then optional retainer for continued development.

    "We were running the whole operation on spreadsheets. The portal Katie built saved us about a day a week within the first month."

    Daniel

    Professional Services, Windsor

    "Phased pricing meant we could start small and prove it worked before spending more. That approach won us over."

    Priya

    Construction SME, Berkshire

    FAQs

    Frequently asked questions

    How much does custom web development in Windsor cost?+

    Phase one of a custom build typically runs £5,000–£12,000 depending on how many user roles and workflows it covers. Larger multi-phase applications with integrations and reporting land between £15,000 and £40,000 over several phases. Every phase is fixed-price, and we agree the phase-one scope in writing before any code is written.

    How do I know a custom build is cheaper than SaaS?+

    Do the arithmetic on the call. If you're paying £400/month across four tools that still don't talk to each other, that's £4,800 a year forever, plus the staff time spent re-keying data. A £8,000 build that removes three subscriptions and a day of admin a week usually pays back inside 18 months — and if it won't for you, I'll say so and recommend the SaaS stack instead.

    What technology do you build on?+

    React and TypeScript on the front end, Postgres for data, with secure authentication, row-level security and role-based permissions. Everything is standard, well-documented technology — no proprietary framework that locks you to me. You own the code and the database.

    Can it integrate with our accounting software and calendars?+

    Yes — that's usually where the fastest wins are. I regularly integrate accounting platforms (including FreeAgent and Xero), Google and Outlook calendars, Stripe for payments, and transactional email. If a tool has a documented API, it can generally be connected.

    How long does a custom application take?+

    Phase one is typically 6–8 weeks from the end of discovery, delivered in two-week sprints with a working demo at the end of each. Larger applications run 3–6 months across phases. You see progress fortnightly rather than waiting months for a big reveal.

    What happens if I want to stop working with you?+

    You keep everything: the source code, the repository, the database and the documentation. I'll hand over to your in-house developer or another agency without drama. Retainers are month-to-month with no lock-in — I'd rather you stay because the work is good.

    Do you do the design as well as the development?+

    Yes. Internal tools are usually where design gets abandoned, which is exactly why staff avoid using them. Your app gets the same design attention as a public website: clear hierarchy, sensible defaults, keyboard-friendly forms and accessible contrast.

    Can you take over an existing custom app?+

    Sometimes. I'll review the codebase first and give you an honest read: whether it's maintainable, what the risks are, and whether continuing or rebuilding is the better economic choice. I won't take on a codebase I can't support properly.

    Do you work with Windsor businesses in person?+

    Yes — discovery workshops in particular work far better face to face, and I'm happy to run those at your office anywhere around Windsor, Berkshire, the Thames Valley or London. Sprint reviews are normally remote to keep momentum.

    What we build

    More web design services in Windsor

    Every project is run from the Windsor studio, so Windsor work is covered by the same team and the same process.

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    Custom web development in WindsorBespoke builds, portals and web apps for Windsor businesses.custom web development
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    Free 20-Minute Discovery

    Software shaped around your business

    Book a free 20-min call — in Windsor or by Zoom.