Before the numbers make sense, it helps to know what a custom MVP development engagement actually includes — because different providers bundle very different things under the same label.

A full-service custom MVP build includes:

Discovery and scoping. The phase where someone actually maps your requirements, challenges your assumptions, defines the architecture, and produces a specification that a development team can build from. This is where the product thinking happens. It's also often where the scope gets meaningfully narrowed — which is, incidentally, one of the most valuable things a good development partner can do for you.

UI/UX design. Wireframes, user flows, visual design. How the product looks and how people move through it. The difference between a product that people use and one they politely close matters a great deal at validation stage, and it's entirely determined here.

Frontend development. The part users see and interact with. Every screen, every button, every transition.

Backend development. The part nobody sees: the databases, the server logic, the APIs, the integrations with third-party services. Usually the most technically complex and the most expensive part of the build.

QA and testing. Making sure it works, consistently, before real people use it. This phase is frequently underestimated in budget and overcut when costs need to come down. It is also frequently the reason things go wrong after launch.

Deployment. Getting the product live, configured properly, monitored, and ready for real users.

Post-launch support. What happens when something breaks at 11pm on a Sunday, which it will.

When you get a quote, it is worth asking — very specifically — which of these are included, what's out of scope, and what happens when you need something that wasn't in the original brief. These questions alone will tell you a great deal about whether two quotes are actually comparable.

Here's the honest breakdown. All figures in GBP because you're likely reading this in the UK, and USD-to-GBP conversion at current rates just makes everything look cheaper without actually being so.

Simple MVP: £12,000 – £35,000

What this buys you: a product with one core user journey, clean but not elaborate design, standard authentication, a basic database, and perhaps one or two integrations with existing services. Think: a booking system, a directory, a simple client portal, a basic SaaS dashboard with core functionality.

Timeline: 6–10 weeks with the right team.

Who this suits: founders at the early validation stage whose primary goal is getting something real in front of real users as quickly as possible. Not trying to impress a Series B investor. Trying to find out if the thing works.

Mid-Complexity MVP: £35,000 – £80,000

What this buys you: a product with multiple user roles, more sophisticated logic, payment processing, meaningful third-party integrations, properly designed UX, and architecture that won't need to be rebuilt when you get your first 1,000 users.

Timeline: 8–16 weeks.

Who this suits: founders who've validated demand and are building something that needs to function as a real commercial product from day one — not just survive long enough to collect feedback. This is also the bracket where you start thinking about investor readiness.

Complex MVP: £80,000 – £200,000+

What this buys you: products with significant technical complexity — AI/ML features, regulatory compliance requirements (fintech, healthcare, legal), complex multi-sided marketplace logic, real-time features, enterprise integrations, advanced data processing.

Timeline: 4–9 months.

Who this suits: companies where the technical challenge is central to the product, where compliance is non-negotiable, or where the MVP is directly investor-facing and needs to demonstrate architectural seriousness from the start.

"Traditional UK Agency" MVP: £150,000 – £500,000+

What this buys you: largely the same product as the mid-complexity bracket, plus a contribution to their Shoreditch office lease, their account management team, their sales cycle overhead, and a very thorough discovery process that will take three months before a line of code is written.

To be fair to them: there are genuinely complex projects that justify this price tier. If you're building regulated financial infrastructure or a platform with unusual scale requirements from day one, the thoroughness that comes with this investment is appropriate.

For a standard startup MVP, it is not.

This is the question founders actually want answered, so let's do it properly.

Different scope interpretations.

The most common reason. A brief that says "a marketplace where buyers and sellers can transact" means genuinely different things to different people. One agency scopes a simple listing + contact form. Another scopes a full two-sided platform with reviews, dispute resolution, and payment escrow. Same brief. Three times the scope. Most of the apparent price variation in MVP quotes is actually scope variation — which is why the discovery phase before any build is so important.

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Different team structures and locations.

A UK-based team charges UK-based rates. A distributed team using talent in India, Eastern Europe, or Latin America — with the same technical standards and management rigour — charges considerably less, because their cost base is lower. The output can be identical. The price isn't. This is not a secret and it is not something to be nervous about. Most of the software you use every day was built by distributed teams. The question isn't where the team is. It's whether the quality standards and management processes are in place.

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Different approaches to AI-assisted development.

Teams using modern AI-powered development workflows — where AI accelerates code generation, review, testing, and documentation — are materially faster than teams that aren't. Faster means cheaper at the same quality level. This has changed the cost-to-quality equation meaningfully in the last two years, and not all providers have updated their pricing models to reflect it.

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Different definitions of "done."

Some quotes include QA. Some don't. Some include deployment. Some assume you'll handle it. Some include a month of post-launch support. Some wave goodbye at the pull request. One reason the £18,000 quote looks attractive next to the £85,000 quote is that they're describing different finishing lines.

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Different quality at different price points.

This is the uncomfortable one. Below a certain number, you're not getting a cheaper version of the same thing. You're getting something different — and often something that will cost you more in the medium term than the more expensive quote would have.

This section exists because honest pricing guides should include the things people wish they'd known before.

Scope creep. The specification you sign off on and the product you want by the end of the project are never identical. Real users, real conversations, and the actual experience of building always surface requirements that weren't in the brief. On a fixed-price contract with a rigid scope, every addition is a change request with a new quote attached. Budget 15-20% above the headline number for scope changes you haven't thought of yet.

Infrastructure and ongoing running costs. The MVP needs to live somewhere. Cloud hosting, database costs, third-party API fees, monitoring tools — these don't appear in a development quote but they start accumulating from day one. For a simple MVP, budget roughly £200-£600/month in running costs. For anything more complex, more.

The iteration budget. A well-built MVP is not the product. It's the beginning of the product. After launch, you'll have feedback, new requirements, bugs to fix, and features to add. Most founders budget for the build but not the first six months of post-launch development. Budget another 20-30% of your initial build cost for the first iteration cycle.

The rebuild you didn't plan for. If you went with the lowest quote and six months later discover the code is unmaintainable — every new feature takes three times as long as it should and the original developer is unreachable — you may find yourself paying twice. This is not hypothetical. It is one of the most common stories in early-stage product development, and it's why the cheapest quote is rarely the most economical decision.

There are legitimate ways to reduce what you spend on an MVP build. There are also ways that look like savings but aren't.

Scope ruthlessly.

The single most effective cost-reduction lever is building less. Not worse — less. Every feature that isn't essential to answering your core validation question is optional at MVP stage. A good development partner will help you identify which features those are. A less good one will build everything you ask for without question, because that's what they're billing for.

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Prioritise the core user journey.

Your MVP needs to do one thing really well — the thing that demonstrates the core value proposition to your target user. Everything else can wait. "Really well" doesn't mean elaborate. It means clear, functional, and free of the bugs that make users assume you're not serious.

Choose a team with the right cost structure.

A distributed development team with rigorous quality standards costs less than a team billing London rates, for the same quality output. This is a legitimate cost reduction, not a quality compromise, provided the vetting and management is right.

Use AI-native development.

Not all development teams are equal in their use of AI tooling. Teams that have genuinely integrated AI into their development workflow are faster — which means cheaper — without sacrificing the quality of what they deliver. Ask any prospective partner directly how AI tools feature in their development process and what impact that has on their timelines and pricing.

Do more of the thinking upfront.

Every hour a development team spends figuring out what you want is an hour they're billing you for. Coming to the engagement with a clear understanding of your users, your core hypothesis, and your success metrics — and being open to having your assumptions challenged in a structured discovery phase — reduces wasted build time significantly.

You're building a B2B SaaS product. It helps professional services firms manage client onboarding — document collection, workflow tracking, automated reminders, a client-facing portal.

The traditional UK agency: Scopes a feature-rich platform with custom branding, mobile apps, enterprise SSO, and integrations with five CRMs. Quote: £180,000. Timeline: 9 months.

The freelancer on a marketplace: Takes your brief at face value and builds what you described. Cheap upfront, no product challenge, architecture decisions made by whoever was available. Quote: £12,000. Timeline: "3-4 months" (becomes 7).

The right development partner: Challenges the brief. Establishes that the core hypothesis is "will professional services firms pay for a better onboarding experience?" Scopes an MVP that collects documents, tracks workflow stages, sends automated reminders, and gives clients a simple portal — nothing more. Uses an AI-native development process with a distributed senior team. Quote: £28,000–£40,000. Timeline: 8–10 weeks. Architecture that scales. Code you own.

That third option isn't a compromise between the other two. It's a different approach entirely — one that builds the right thing, properly, at a cost that reflects how development actually works in 2025.

We're the third option.

Custom-built, fully owned, AI-native development process, senior distributed team, fixed-price engagements so there are no billing surprises. We challenge the brief before we touch the code — narrowing scope, questioning assumptions, making sure what gets built is what the validation question actually requires. We include design, development, QA, and deployment. We don't disappear after launch.

Our MVPs typically come in between £15,000 and £80,000 depending on complexity, and we deliver in 8–12 weeks. That's not a race to the bottom — it's what happens when you build efficiently with the right tools and the right team.

If you've got quotes you're trying to make sense of, or you're trying to figure out what a proper build of your specific product should cost — start with a conversation. We'll tell you honestly what we'd scope and what it would cost before anyone commits to anything.