How much does SaaS development cost?

A first sellable version — multi-tenant, secure by design, with auth, billing and onboarding included — starts from £15,000. A SaaS blueprint, which scopes and de-risks the build first, starts from £4,000. Both are fixed-price, agreed before work starts.

How long until we can charge our first customer?

Around three months is our typical project shape from design through launch — and “sellable” is the bar for the first version, not a demo. Bigger platforms take longer; you'll get an honest timeline upfront.

Do you handle subscriptions and billing?

Yes — billing is part of the first version, not an afterthought. We've shipped subscription systems on Stripe, in-app purchases and freemium tiers, so revenue can flow from the day you launch.

Who owns the platform and the code?

You do. Once the work is delivered and paid for, the platform is yours — the code, the system, all of it. You're not renting it from us or tied to us to keep running it.

Can you take over an existing SaaS product?

Yes. We review what's there honestly, tell you what's worth keeping, and extend rather than rewrite wherever the economics support it — then quote the scale-up work at a fixed price, agreed before we start.

SaaS Development Agency UK

Every step, with a team who's done it before

A SaaS lives or dies on the parts customers never see — tenancy, billing, onboarding and security. Get them wrong and every new customer is a fire to put out. We build them in from day one, so version one is something you can actually sell, not a demo.

Book a free 20-minute consultation

Tenancy first

We start with the model most SaaS builds get wrong late — how tenants are isolated and how billing works — because retrofitting either is misery. A first conversation to map that costs nothing.
Blueprint it

A SaaS blueprint from £4,000 designs the multi-tenant architecture, maps the pricing model and gives you a costed, staged build plan — plus an honest call on what version one actually needs. The first sellable build starts from £15,000.
Build to sell

We build multi-tenant and secure by design, with auth, onboarding and Stripe subscriptions live from day one — sellable, not a demo. Milestone-paid, in short stages you can see.
Scale it up

Once you're charging customers, we extend the platform as it grows — or take over an existing SaaS, keep what's worth keeping, and quote the scale-up at a fixed price. The code and the platform are yours on payment.

Platforms doing daily work

A white-label workforce platform built to carry any employer's brand, a case-handling platform running a client's whole operation end to end, and a creator platform taking subscriptions through Stripe. Multi-tenancy and billing are dull until they're missing — so we build them in from day one.

Connect by CoCentric

A secure chat and calling app for frontline workers, built for CoCentric's Connect platform — messaging, voice and video, and a white-label design system that adapts to every organisation.
Read more
Insurance claims platform

Published under NDA, with the sector changed: CodeLeap builds and maintains the web platform a claims operation runs on, carrying every claim from the day it is notified to the day the work is signed off.
Read more
Udokk

Udokk is a health and wellbeing content platform CodeLeap built from scratch — iOS, Android and web — where creators publish video content, grow a following and earn through subscriptions.
Read more

See more case studies

The tech

The platform stack under our SaaS builds — billing, tenancy and infrastructure named plainly, shipped-with kept distinct from works-with.

Stripe & Stripe Connect

Udokk's creator subscriptions run on Stripe Connect, multi-party payouts included — billing here is proven ground, not a first attempt.
Django & Python

Our SaaS backends are typically Django — the stack behind several platforms we've shipped and still run, chosen for how well it wears.
React

We've built production web software with React — the fit for the dashboards and consoles SaaS lives in.
Multi-tenant architecture

One codebase serving every customer with hard walls between their data — we design tenancy first because retrofitting it is misery.
AWS & Google Cloud

Our shipped platforms run on AWS and Google Cloud, Udokk's on Google Cloud and Firebase — and we plan for the bill as well as the uptime.
RevenueCat

Where a SaaS sells through the app stores we've shipped RevenueCat alongside Stripe — one subscription state, however the customer pays.
Next.js

We work with Next.js for SaaS marketing sites and app shells where it fits — and will say so when something simpler does the job.
And much more

This is what comes up most often, not a limit. Bring us something that isn't on this list and we'll get up to speed on it — working with something new is the job, not an obstacle.

What our clients are saying

Real reviews from clients we have delivered for, on Clutch and elsewhere.

4.9 via Clutch

The enthusiasm, understanding of our mission, and passion from the first few minutes of the call were the deciding factors in choosing CodeLeap. Within 3 months of our app launching, we had over 1,500 downloads, appeared in leading publications from Forbes, The Metro, Marie Claire, Women's Fitness and many more, and started raising further investment.

Charlie CEO, Becon
They are incredibly diligent in the quality of work they produce, and go above and beyond when it comes to solving issues faced within the project, and to ensure we meet strict project deadlines. You never feel like you are one of many clients, and they ensure they are always there to help with any need you have, no matter how big or small.

Amelia Parmiter Marketing Manager, AWS - Marble
CodeLeap made me feel like my options were limitless in terms of what could be achieved, which was critical to me as we were creating something very unique. I'm glad I chose Codeleap over a large corporation as the personable approach resulted in a smooth and pleasant experience.

James CEO, Bearable
Working with CodeLeap was a very good experience from both a professional and personal point of view. These people know what they are doing and are both efficient and clever and made a good partner. I wouldn't hesitate to recommend CodeLeap.

John CEO, Neurometrics-Diab
CodeLeap adds so much value and goes above and beyond what I expected. CodeLeap's team is very flexible with all the different requests we've put in front of them. They've also been great with the whole business side of things, and being able to forecast for this industry is really helpful. Overall, I'm completely satisfied with their work — they've been incredibly helpful.

Johanne CEO, Cherry
Their flexibility and focus on quality were outstanding.

Mike Fenna CTO, Kite Insights
Marcelo has been wonderful throughout the process and we are very happy.

Amrit Director, Energy Company
Absolutely FANTASTIC. This is very much what I had in mind. We're very pleased with your team, thank you all very much.

Rich Director, Legal Company

See all reviews on Clutch

Recognised by the industry

Independent rankings from Clutch, The Manifest, SME News and the National Digital Awards.

Flexible, transparent pricing

SaaS blueprint

Scope and architecture
- Multi-tenant architecture designed
- Billing and pricing model mapped
- A costed, staged build plan
- An honest call on what version one needs
- Everything yours, whoever builds it
From £4,000
Book a free consultation
SaaS MVP

First sellable version
- Multi-tenant, secure by design
- Auth, billing and onboarding included
- Stripe subscriptions live from day one
- Sellable, not a demo
- Milestone payments — pay as we deliver
From £15,000
Book a free consultation
Other development services

Design · Build · Launch
Contact us

Any questions? We're here to answer

Everything you might want to know before starting a project with us.

A first sellable version — multi-tenant, secure by design, with auth, billing and onboarding included — starts from £15,000. A SaaS blueprint, which scopes and de-risks the build first, starts from £4,000. Both are fixed-price, agreed before work starts.
Around three months is our typical project shape from design through launch — and “sellable” is the bar for the first version, not a demo. Bigger platforms take longer; you'll get an honest timeline upfront.
Yes — billing is part of the first version, not an afterthought. We've shipped subscription systems on Stripe, in-app purchases and freemium tiers, so revenue can flow from the day you launch.
You do. Once the work is delivered and paid for, the platform is yours — the code, the system, all of it. You're not renting it from us or tied to us to keep running it.
Yes. We review what's there honestly, tell you what's worth keeping, and extend rather than rewrite wherever the economics support it — then quote the scale-up work at a fixed price, agreed before we start.