---
title: "How much does bespoke software cost in the UK? (2026)"
description: "What bespoke software costs in the UK in 2026: price bands from £10,000, the five things that move the price, run costs and when not to build."
canonical: https://www.clientflow.ai/guides/bespoke-software-development-cost-uk
category: Cost
authors: ["Zac Santer"]
published: 2026-09-04
verified: 2026-09-04
language: en-GB
---

# What bespoke software actually costs in the UK

Real numbers from a studio that quotes them. The bands, what moves a build between them, what it costs to run, and when the honest answer is not to build.

By Zac Santer · Published 4 September 2026 · Verified 4 September 2026 · 17 min read

**Summary:** A focused version one of a bespoke system costs from £10,000 in the UK, and most of what established teams ask us to scope fits between £10,000 and £50,000. Five things move the price, and all five can be seen before anyone commits: integrations, data, complexity, user roles and compliance. Running it afterwards is a short list of services in your own name, priced by usage rather than by the size of your team, plus whatever support you choose. The right first step costs nothing: a twenty-minute blueprint call that ends in a firm range, or in the advice not to build.

## Contents

1. [The short answer](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#the-short-answer)
2. [What moves the price](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#what-moves-the-number)
3. [How a build is priced](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#how-a-build-is-priced)
4. [What you are paying now](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#what-you-are-paying-now)
5. [What it costs to run](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#what-it-costs-to-run)
6. [What compliance costs](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#the-compliance-line)
7. [Timeline, and how the money moves](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#timeline-and-cash-flow)
8. [In US dollars](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#in-us-dollars)
9. [When we will tell you not to build](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#when-not-to-build)
10. [Questions people ask before a build](https://www.clientflow.ai/guides/bespoke-software-development-cost-uk#questions)

## 1. The short answer

Bespoke software in the UK costs from **£10,000** for a focused version one. Most of what established teams ask us to scope fits between £10,000 and £50,000, and the number is fixed before the build starts, not discovered after it.

Those are our figures, and they are the same three bands the application form asks about. They are a guide to where a build usually lands, not a menu. What decides the band is the shape of the work.

| Band | In dollars | What it usually buys | Typical example |
| --- | --- | --- | --- |
| **£10k to £25k** | **$13.5k to $33.7k** | A focused version one. One workflow done properly, one or two kinds of user, one or two systems connected. | A client portal for status, documents and approvals. An approval queue that replaces the spreadsheet it grew out of. |
| **£25k to £50k** | **$33.7k to $67.5k** | Several workflows that share data. More kinds of user, permissions by team or site, reporting and deeper connections into finance or operations systems. | A supplier portal reading purchase orders from the accounts system and posting approvals back. A member app with booking, payments and a staff dashboard. |
| **£50k and above** | **$67.5k and above** | A system across the operation. Many roles, data moved out of an incumbent tool, compliance requirements and a release in phases. | An operations platform for a multi-site business with an integration to the till, the CRM and the payroll provider. |

Indicative. Every build is priced from its blueprint, and the price we quote is the total. Third-party services are paid by you, directly, and are listed in section 5.

The same three bands, converted at the European Central Bank reference rate for 3 September 2026, £1 = $1.35[^5], and rounded. US teams are quoted in dollars, fixed at the blueprint. Section 8 has the detail.

> **Why the floor is £10,000**
>
> Below that, a fixed-price build cannot carry design, a proper data model, integration work, testing and a handover you own. What fits under £10,000 is configuration of a tool you already pay for, or a no-code build, and if that is the right answer for you we will say so on the first call.

A band is not a price. What turns one into a single number is the scope, written down in enough detail that someone can defend it, and that work has its own guide: [how to scope a build before you pay for it](https://www.clientflow.ai/guides/how-to-scope-a-software-project), including what other suppliers charge for it and who owns the document.

## 2. What moves the price

Five things decide where a build lands. None of them is a mystery, and all five show up in the first conversation, which is why we can put a firm range on a build before anyone pays for anything.

- **Integrations**: Every system the software reads from or writes to: the CRM, the accounts package, the till, the payment provider. Each one is real work, and each one is where a cheap quote hides its shortcuts.
- **Data**: Whether data already exists and where. Starting clean is cheap. Moving three years of records out of a spreadsheet or an old tool, with its inconsistencies, is a project inside the project.
- **Complexity**: Branching rules, calculations, states and exceptions. ‘Approve or reject’ is simple. ‘Approve, unless the value is over £5,000 and the requester is not a director, in which case route to finance’ is not.
- **Roles**: How many kinds of user, and how different their views are. A portal for customers and a console for your team are two products sharing a database, however similar they look.
- **Compliance**: Personal data, payment data, health data, children’s data, or a regulator looking on. Each adds work that is invisible in a demo and expensive to retrofit. Section 6 puts numbers on it.
- **Not on the list: the design**: Design is in every band. A version one that looks like a version one gets ignored by the people it was built for, and adoption is the whole return on the investment.

A worked example. A fit-out contractor wants clients to see programme status, sign off variations and download certificates. One kind of user outside the business, one inside, documents stored in the system, and status updated by hand. That is a £10k to £25k build.

Add a live link to their scheduling tool and Xero so that variations raise invoices automatically, and it is a different build, with two integrations and a reconciliation problem, and it moves into the second band.

The mistake to avoid is treating the bands as a discount ladder. Taking a workflow out of scope is not a saving if the workflow is the reason to build. Version one should be the smallest thing that is worth using every day, and then it earns the next piece.

## 3. How a build is priced

We do not sell hours. A build is scoped in a blueprint, priced as one fixed number from that blueprint, and paid in instalments against milestones. You know the number before you commit, and the number does not move unless the scope does. The bands and what every build includes are on the [pricing page](https://www.clientflow.ai/pricing).

1. **Blueprint call** · Free · Day one

   Twenty minutes with the people who would scope the build. It ends in a recommendation, and sometimes the recommendation is not to build.

2. **Blueprint** · Scoped · Weeks 1 to 2

   Scope, users, integrations and risks written down, with a clickable prototype, so the build is agreed before it starts. This is where the firm range becomes a fixed price.

3. **Build** · Built · Weeks 3 to 8

   Designed and built, AI-assisted for speed with a senior engineer reading every change, wired into the systems you already run. You see working software long before launch, not a demo at the end.

4. **Launch and handover** · Owned · Handover

   Code, environments and documentation transferred to you, your team trained, and a warranty after launch.


### What ‘from £10k’ means, precisely

It means the smallest fixed-price build we take on is £10,000, and that your build’s price is set in writing from its blueprint.

It does not mean a £10,000 estimate that becomes £18,000 by launch. If something we did not scope turns out to be needed, it is priced in writing before anyone acts on it, and you decide.

### Why fixed price rather than day rate

The median contract rate for a senior software engineer in the UK is £525 a day[^1]. The rate is not the problem. The open-ended number of days is.

A day rate moves the risk of estimating onto you: if the work takes longer, you pay more, and you cannot check whether it should have. A fixed price from a blueprint moves that risk to us, where it belongs, because we are the ones who can see the work.

It also changes the incentive. On a day rate, a change request is revenue. On a fixed price, it is a conversation about whether the change is worth having.

> **The one thing that is never chargeable**
>
> If something does not do what the blueprint says, it is a defect and it is ours to fix. If it does what the blueprint says and you want it to do something different, it is a change, and it is priced before it is built. That test is written into every agreement so that neither side is the referee.

**What the blueprint contains**

The scope in plain words. Who the users are and what each of them can see. Every system it connects to and how. The risks we can see and what we will do about them. A clickable prototype of the principal screens. It ends in one fixed price and a delivery plan in weeks.

**What is in a fixed-price quote**

The scope it covers, the price, the milestones it is paid against, the warranty window after launch, what you own and when, and the test that decides whether something is a defect or a change. If it is not in the quote, it is not in the price, and we will have said so.

**What happens if the scope changes**

You describe what you want, we scope it in writing with a fixed price, you say go, and only then is it built. Nothing is ever chargeable unless you have approved a price for it first. Anything that turns out to be a defect is ours, at no cost.


## 4. What you are paying now

The comparison that matters is not bespoke against nothing. It is bespoke against the workaround you are already paying for, in seats, in tasks and in hours, and the workaround compounds. The full case, with the price rises and the exit costs, is in the [own-or-rent guide](https://www.clientflow.ai/guides/build-or-buy-software-uk); this section has the arithmetic.

Off-the-shelf tools are priced per seat per month, and the price rises with the tier that has the feature you actually need. HubSpot’s Sales Hub Professional lists at $90 a seat a month on annual billing[^2], Airtable’s Business plan at $45 a seat a month[^3], and Zapier’s Professional plan from $19.99 a month at its lowest task tier, with Team from $69[^4].

None of those is unreasonable for what it does. The problem is arithmetic: a team of twenty on two of them is spending a version-one build every year, and owns nothing at the end.

| Item | Year 1 | Three years |
| --- | ---: | ---: |
| CRM, 20 seats, professional tier[^2] | £16,000 | £48,000 |
| Database tool, 20 seats, business tier[^3] | £8,000 | £24,000 |
| Automation, team tier[^4] | £600 | £1,800 |
| **Workaround total** | **£24,600** | **£73,800** |

A twenty-person team on all three. Vendors’ list prices in dollars on annual billing, converted at the ECB reference rate for 3 September 2026, £1 = $1.35[^5], and rounded to the nearest £100.

- Workaround, three years: £73,800
- A focused version one, owned: £10k to £25k

**Fig. 1.** Three years of the workaround above against a focused version one, owned outright. The version one is drawn at the top of its band; run costs, in section 5, are about £800 a year on top.

Then the hours. If two people spend half a day a week each re-keying between systems and chasing status, that is a day a week of salaried time, which at a modest £35,000 salary is £7,000 a year before employer costs, and it grows with the team.

There is a third cost that rarely makes it into the spreadsheet. Zylo’s 2026 index of company software spend puts the average portfolio at 305 applications, and found that 78% of IT leaders had been hit by unexpected charges for AI features or usage-based pricing in the past year[^6].

Tools bought to bridge a gap tend to stay bought, and the bill for them is set by someone else.

> **In practice**
>
> The break-even question is simple to ask: what does the workaround cost over three years, in seats, tasks and hours, against a build you own? When the answer is close, buy the tool. When it is not close, it is usually not close by a wide margin.

## 5. What it costs to run

Bespoke software runs on the same services a SaaS product runs on, except that the accounts are in your name and the bill is for usage, not for seats. At version-one scale that is a short list.

| Service | What it does | List price |
| --- | --- | ---: |
| Hosting[^7] | Serves the application worldwide, with a preview of every change and certificates renewed for you | $20 a month per developer seat |
| Database and sign-in[^8] | Your data and your users, in the London region, backed up daily | $25 a month |
| Transactional email[^9] | The emails the system sends: invites, status changes, receipts | $20 a month for 50,000 emails |
| Error monitoring[^10] | Tells whoever maintains it before a user does | $26 a month |
| Domain and DNS | Your address | A few pounds a year |
| Apple Developer Program[^11] | Only for an iOS app | $99 a year, charged in local currency |
| Google Play[^12] | Only for an Android app | $25, once |

List prices at the sources cited, in the currency the vendor shows. Every account is opened in your name from the first week and you pay the provider directly; nothing is routed through us or marked up.

- **Running a version one**: $91 a month (Hosting, database, email and monitoring, at list price)
- **Apple Developer Program**: $99 a year (Only if you ship an iOS app[^11])
- **Google Play registration**: $25 once (Only if you ship an Android app[^12])

Payment processing is not in the table because it is a percentage of what you take, set by the provider, and it is the same whether the software is bespoke or bought. A support fee is not in it because it is a choice, not a service charge.

### Support after launch

Every build ships with a warranty window in which anything that does not do what the blueprint says is fixed at no cost, whether or not you take support afterwards. After that, support is a fixed monthly fee scoped with the build.

It covers keeping the software working: new phones and browsers, security updates, the tools underneath, monitoring and someone to call. It does not cover new features, which are always scoped and priced first so you see the price before the work.

Because you own the accounts and the code, ending support changes nothing about the software. It keeps running in your accounts with any developer you choose. That is the point of owning it.

## 6. What compliance costs

Compliance is the line item most cost guides leave out and most builds trip over. For a UK business handling personal data it is a known quantity, and it is cheaper planned than retrofitted.

| Item | When it applies | Cost |
| --- | --- | --- |
| ICO data protection fee[^13] | Almost every UK organisation that processes personal data, yearly | £52 or £78 for most organisations; £3,763 for the largest |
| Cyber Essentials certification[^14] | When customers or a public-sector contract ask for it | From £320 plus VAT, by organisation size |
| Penetration test[^15] | Before launch for anything holding payment, health or sensitive data | £3,750 to £15,000 for a web application test, typically three to five days[^16] |
| Data protection impact assessment | High-risk processing: health data, children, monitoring | Time, mostly yours; we supply the technical answers |

Third-party costs, paid by you to the provider. The engineering side of compliance, meaning encryption, access control, audit history and data residency, is inside the build price, not an add-on.

What is included in every build without asking: data hosted in the UK or London region, row-level access control enforced in the database rather than trusted to the app, an audit history of who changed what, payment details that never touch our servers, and a processor agreement so that the data is yours in law as well as in practice.

What we will not do is claim a certification we do not hold or a compliance regime we have not shipped under. If your data needs one, it is either priced as a line in the blueprint with a named third party, or it is a reason we tell you not to build with us.

## 7. Timeline, and how the money moves

A focused version one takes weeks, not quarters. The blueprint takes one to two, the build three to eight, and the dates that neither of us controls, such as an app-store review, are named as such rather than promised.

Payment follows the work. A build is invoiced in instalments against milestones agreed in the blueprint, and each invoice is for something you can see.

Two rules protect both sides. The code lands in your repository from the first week, so anything paid for is yours whatever happens next. And the plan moves by the delay when a decision or a piece of content arrives late, so a missed date costs days, not money.

**Do**

- Name one decision-maker before the blueprint starts. Consolidated feedback is the single biggest saver of time.
- Have your data ready: the products, the customers, the rules, in whatever state they are in.
- Scope version one narrow on purpose, then extend it once it has earned its place.

**Don’t**

- Pay a large deposit for a build with no blueprint behind it. There is no number to hold anyone to.
- Accept an open-ended estimate for a fixed piece of work. The risk is yours and the incentive is wrong.
- Fund the everything version first. Adoption comes from the first workflow working, not the tenth.

## 8. In US dollars

We quote US teams in dollars, fixed at the time of the blueprint. As a guide, at the European Central Bank reference rate for 3 September 2026, £1 was $1.35[^5], so £10,000 is about **$13,500** and the £25,000 and £50,000 thresholds are about **$33,700** and **$67,500**.

Against the US market that is a senior team at a price US buyers associate with offshore work. Published rate tables put mid-market US custom development firms at roughly $100 to $300 an hour and boutique agencies at $75 to $250[^17], and at an hourly rate the total is whatever the hours turn out to be.

The difference is not quality. It is overhead: [two founders](https://www.clientflow.ai/about), no account managers, no office in a city you will never visit, and a price that is fixed before the work starts.

- Working hours overlap the US East Coast morning through early afternoon, and the blueprint call is scheduled to suit you.
- Intellectual property is assigned to you under the agreement, governed by the law of England and Wales unless you need otherwise.
- Every account is in your name from the first week, in the region you choose, including a US data region if your customers are there.

## 9. When we will tell you not to build

Some calls end with us recommending something other than a build, and we would rather that than the alternative. A build that does not pay for itself is a bad reference and a worse relationship.

- **A tool already fits.** If an off-the-shelf product covers 90% of the workflow and the missing 10% is a preference rather than a cost, configure the tool. We will point you at the setting.
- **The process is not stable yet.** Software fixes a process in place. If the way you work changes monthly, write it down and run it by hand for a quarter first, then build the version that survived.
- **Nobody would use it daily.** A system used once a month by two people is a spreadsheet with ambitions. The return on bespoke software comes from removing daily friction.
- **The budget is under £10,000.** It is not that the work cannot be done. It is that it cannot be done well at a fixed price, and a cheap build that stalls costs more than either option.
- **You want an app because competitors have one.** A mobile app is the right answer when your customers reach for their phone to do the thing. If they reach for a laptop, build for the laptop.

**Not sure which side of the line you are on?** That is exactly what the blueprint call is for. Twenty minutes, no preparation and a straight answer either way. If you have already tried an AI builder and stalled, the [Lovable guide](https://www.clientflow.ai/guides/stuck-with-a-lovable-build) is written for exactly that call.

[Apply for a blueprint call](https://www.clientflow.ai/apply)

## 10. Questions people ask before a build

### How much does bespoke software cost in the UK?

Bespoke software in the UK costs from £10,000 for a focused version one. Integrations, data, complexity, roles and compliance move the price; the blueprint call gives you a firm range for free, and the blueprint fixes it before you commit. Version one is scoped narrow on purpose: prove the workflow first, extend it once it has earned its place.

### Is the price fixed, or an estimate?

Fixed, from the blueprint. The blueprint call gives you a firm range for free. The blueprint itself turns that into one number in writing, and that number only moves if you change the scope, in which case the change is priced before it is built.

### Why no day rate?

Because a day rate moves the estimating risk onto the person least able to judge it, which is you. We can see the work, so we carry the risk of getting it wrong. It also means a change request is a conversation about value rather than a line on an invoice.

### Does AI-assisted development make it cheaper, or worse?

Cheaper, and the mechanism is honest: developer rates have not fallen, but the hours a given scope takes have. Every build is senior-reviewed, and the specification, the tests and the handover are the same whether a line was typed or generated. What you are paying for is judgement about what to build, which is the part no tool provides.

### Who owns the software?

You do. The code lives in a repository in your name from the first week, the hosting and database accounts are yours, and the intellectual property in everything made for you is assigned under the agreement. Ending a support arrangement changes nothing about the software.

### What do you need from us?

One decision-maker, feedback in consolidated rounds within a couple of working days, and your data and content when the plan says. Most delays on a build are decisions, not code.

### We already pay for a portal from a software vendor. Is switching worth it?

Sometimes. Add up what it costs per seat over three years, what it cannot do that you keep working around, and what leaving it would cost in data you cannot export. If the vendor tool fits, we will say so. If it is the thing your team spends its afternoons fighting, that is the case for a [client portal you own](https://www.clientflow.ai/client-portal-development).

### Can we start smaller than version one?

Yes, and we would rather you did. The blueprint is the smallest useful step: the first one to two weeks, ending in a written scope, a clickable prototype and one price. Nothing is built before it, and that price is what you commit to.

## Sources

Every third-party figure above was read from the page cited, on the date shown. Vendors change prices without notice, so the date is part of the fact.

[^1]: [IT Jobs Watch, Senior Software Engineer contract rates, six months to 3 September 2026](https://www.itjobswatch.co.uk/contracts/uk/senior%20software%20engineer.do). Median daily rate £525. Seen 4 September 2026.
[^2]: [HubSpot, Sales Hub pricing](https://www.hubspot.com/pricing/sales). Shown in dollars: Professional $90 a seat a month on annual billing, $100 monthly; Enterprise from $150. Seen 4 September 2026.
[^3]: [Airtable pricing](https://airtable.com/pricing). Team $20 and Business $45 a seat a month on annual billing. Seen 4 September 2026.
[^4]: [Zapier plans and pricing](https://zapier.com/pricing). Professional from $19.99 a month, Team from $69, tasks bought in tiers from 750 a month. Seen 4 September 2026.
[^5]: [European Central Bank, euro foreign exchange reference rates, 3 September 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html). USD 1.1615 and GBP 0.86055 to the euro, which makes £1 about $1.35. Seen 4 September 2026.
[^6]: [Zylo, 2026 SaaS Management Index](https://zylo.com/2026-saas-management-index). Portfolios steady at 305 applications; 78% of IT leaders reported unexpected charges tied to AI features or consumption-based pricing. Seen 6 September 2026.
[^7]: [Vercel pricing](https://vercel.com/pricing). Pro, $20 a month per developer seat. Seen 4 September 2026.
[^8]: [Supabase pricing](https://supabase.com/pricing). Pro, $25 a month with the first project included and 100,000 monthly active users. Seen 4 September 2026.
[^9]: [Resend pricing](https://resend.com/pricing). Pro, $20 a month for 50,000 emails. Seen 4 September 2026.
[^10]: [Sentry pricing](https://sentry.io/pricing/). Team, $26 a month on annual billing. Seen 4 September 2026.
[^11]: [Apple Developer, Program enrolment](https://developer.apple.com/help/account/membership/program-enrollment/). Annual fee 99 USD, in local currency where available. Seen 6 September 2026.
[^12]: [Google Play Console help, registering for a developer account](https://support.google.com/googleplay/android-developer/answer/6112435). US$25 one-time registration fee. Seen 4 September 2026.
[^13]: [Information Commissioner’s Office, guide to the data protection fee](https://ico.org.uk/for-organisations/data-protection-fee/data-protection-fee/). Tier 1 £52, tier 2 £78, tier 3 £3,763, with £5 off by direct debit. Seen 4 September 2026.
[^14]: [National Cyber Security Centre, Cyber Essentials overview](https://www.ncsc.gov.uk/cyberessentials/overview). Certification priced by organisation size, starting at £320 plus VAT; Cyber Essentials Plus is quoted. Seen 4 September 2026.
[^15]: [Precursor Security, penetration testing cost guide, 2026](https://www.precursorsecurity.com/services/offensive-security/penetration-testing/cost). Web application tests £3,750 to £6,250 and up over three to five days, about £1,200 a consultant day. Seen 4 September 2026.
[^16]: [Fortbridge, UK penetration testing cost guide, 2026](https://fortbridge.co.uk/pentesting/how-much-does-penetration-testing-cost-uk/). A standard web application test £5,000 to £15,000; senior tester day rates £1,200 to £1,800. Seen 4 September 2026.
[^17]: [FullStack Labs, software development price guide, 27 August 2026](https://www.fullstack.com/labs/resources/blog/software-development-price-guide-hourly-rate-comparison). Vendor-published tier tables: mid-market custom development firms roughly $100 to $300 an hour, boutique agencies $75 to $250. Seen 4 September 2026.

## About the author

**Zac Santer**, Co-founder and design lead. Zac scopes every build and writes the number on every quote. [LinkedIn](https://www.linkedin.com/in/zachary-santer/)

## More guides

- [How to scope a build before you pay for it](https://www.clientflow.ai/guides/how-to-scope-a-software-project): What a scope contains, what it costs, and who owns it when you have paid for it.
- [What the software you own actually costs to run](https://www.clientflow.ai/guides/running-costs): About £800 a year at list prices, nothing per seat, and where the 15 to 25% rule came from.

All guides: https://www.clientflow.ai/guides. Every guide is also served as Markdown at its URL with .md appended.