You’ve probably had the thought more than once: “I’d love a second income, but I don’t have time to run a business.” That’s completely fair — and it’s exactly the gap we build for. You don’t need to become a full-time ecommerce operator to own a store that makes money. You need the right store, built properly, from the start.
Most people picture “starting an online shop” as endless admin: chasing orders, updating stock, replying to emails at 11pm. That’s what happens when a store is bolted together cheaply or half-finished. A properly built store is different. Payments are automated. Inventory and order confirmations run themselves. Customer emails go out without you touching a keyboard. Once it’s live, your job is checking in occasionally — not babysitting it daily.
This suits a lot of people: someone with a product idea they’ve been sitting on, a side hustle they want to scale without quitting their job, or someone who simply wants a second income stream running quietly in the background while they focus on their family, career, or next venture. You bring the idea and the product — we build the machine that sells it.
Three things make a store “passive” rather than a part-time job:
Get those three right, and the store genuinely can tick along while you’re at work, asleep, or on holiday.
We’re a UK software development agency positioned deliberately between a freelancer and a traditional agency. You get proper development discipline — fixed pricing, clear timelines, full source code ownership — without freelancer risk or agency bloat. Everything we build, you own outright. No lock-in, no mystery retainers.
For most people exploring passive income through an online store, our Shopify development service is the natural starting point. We design and build stores with automated payments, inventory syncing, and order management baked in from day one, priced between £499 and £18,999 depending on complexity — from a simple single-product store through to a fully custom, multi-feature shop. If your idea grows into something more platform-like — a marketplace, a subscription product, or custom tooling beyond what Shopify can flex to — our SaaS development service covers builds from £18,000 up to £650,000+, using AI-accelerated development to keep timelines and costs sane.
For ongoing peace of mind, our support plans start from £299/month for Shopify stores and £797/month for SaaS platforms, covering updates, monitoring, and small changes so your “passive” store stays that way. It’s entirely optional — plenty of clients run happily without one — but it’s there if you’d rather not think about maintenance at all.
Freelancers are often cheaper upfront but come with real risk: inconsistent availability, no guarantee of code quality, and projects that quietly stall when life gets in the way. Traditional agencies solve the reliability problem but introduce new ones — slow timelines, opaque day-rate pricing that balloons mid-project, and layers of account management between you and the people actually building. By Design UK sits deliberately in the middle: fixed prices agreed upfront, direct access to the people building your store, and full ownership of the code the moment it’s finished.
We don’t just talk about build quality — we run our own proof of it. Tackly.co.uk is a live, multi-toolkit SaaS platform we built and operate ourselves. It’s real evidence of the automation, reliability, and technical capability we bring to every project, whether it’s a compact Shopify store or a full SaaS platform.
If you’ve got a product idea, an existing side hustle, or just a general sense that you’d like a second income without a second job, the best next step is a conversation. We’ll talk through what you’re picturing, whether Shopify or a custom build fits better, and give you a fixed price before anything begins. Visit our about page to see how we work, or head straight to our contact page to get a quote.
Yes, if it’s built with automated payments, inventory, and order confirmations from the start. Most day-to-day admin only exists because a store wasn’t set up properly in the first place.
No. Most of our Shopify clients are new to ecommerce. We handle the technical build and automation; you focus on your product and idea.
Our Shopify builds range from £499 to £18,999 depending on features and complexity, agreed as a fixed price before work begins — no hourly billing surprises.
If your idea outgrows Shopify into something more custom, like a marketplace or subscription platform, our SaaS development service (from £18,000) can take it further, and we can advise on the right path as you grow.
Image via Pixabay
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