Web development in Cornwall

We’re a Cornwall-based web agency specialising in custom WordPress websites – designed and built from scratch, not squeezed out of a template. Our web developers put UX, accessibility and performance at the heart of every build, so your site is a joy to use, open to everyone and quick off the mark – with sustainability in the mix from day one.

13A Kenwyn Street, Truro, Cornwall TR1 3DJ
01726 247 050

Explore

Crafting sustainable apps and websites with

Climate Arc logo
Bizspace logo
Google logo
The Wave logo
Greenhouse logo
University of Exeter logo
National Grid logo
London Climate Action Week logo
Visit Cornwall logo
Play showreel
Hiyield Showreel video cover highlighting The Wave website.
jamie asterisk

Who we are

A proudly Cornish web development agency

There’s more to Cornwall than beaches. It’s got a long engineering history and a thriving tech scene – and we’re proud to have been part of it since 2018.

Our founder Matt grew up here, and after years working with Cornish tech startups, he started Hiyield in 2018. Fast-forward to today and we’re a team of developers, designers and problem-solvers based in the centre of Truro, building high-performing websites and progressive web apps – and picking up some silverware along the way, including Development Agency of the Year at the 2025 European Agency Awards and Best Development Agency at the 2026 National Digital Awards.

Kelli fairbrother CEO at xigxag asterisks

We’re really pleased with how the site turned out. We’re already seeing the impact of Hiyield’s work — we saw almost 4.5x more clicks and 67x more impressions from our site within a month. So far, we’ve only indexed 17% of our site’s pages, so we are expecting those numbers to still increase.

, xigxag

Web development in Cornwall that makes a positive impact

  • Local and approachable – we love working with like-minded Cornish businesses. Drop into our Truro office for a coffee and a chat anytime.
  • Built around your business – no off-the-shelf templates. Every website we build is designed from scratch for your audience and your goals.
  • Room to grow – we build with the future in mind, so your site scales with your business instead of holding it back.
  • Easy to manage – update content, publish pages and run your site yourself, without needing a developer on speed dial.
  • Sustainable by default – efficient code, lower-carbon hosting and lean design come as standard in every build.
Sophie from Hiyield sat at her desk smiling, surrounded by plants.

Web development services in Cornwall

Helping purpose-driven organisations do more good

Sustainable, accessible web development for teams working on things that matter – from custom WordPress sites to full web apps, all built in-house in Truro.

Our web development services

Websites, web apps, APIs or digital tools, we’ve got you covered

  1. Custom website development – bespoke websites designed around your brand and your goals, never squeezed from a template.
  2. Responsive web design – your site working properly on every screen, from phones to desktops, without anything breaking or looking odd.
  3. E-commerce – online stores that make buying easy, with secure payments, smart product catalogues and checkouts people actually finish.
  4. Web app development – scalable web applications built for the complex stuff, when an off-the-shelf tool won’t cut it.
  5. SEO and accessibility are built in – every site is optimised for search and built to accessibility standards, so more people can find you and everyone can use you.
A photo of someone coding in a laptop, in the Hiyield asterisks.
The Wave open in 3 phones
The wave open on a laptop in an asterisks

Working with The Wave

From digital transformations to bespoke websites

We’ve been working with The Wave since before they opened their doors, helping them carve their way to success using modern-day digital practices. Year on year, leaning on our expertise, they’ve been going from strength to strength. Whether it’s a new on-site customer check-in process, a new website built with a modern Content Management System, or even a sleek customer waiver system, we’ve been there to support their journey.

“Hiyield felt like an extension of our team. We were ready to be inundated with questions from our customers after launching but this didn’t happen, is a real testament to the usability of the software. We’ve had great feedback from both customers and internal stakeholders. We’re now looking forward to working with Hiyield on our next project.” – Chloe Hughes , Marketing MAnager at The Wave

Want to know more?

What makes our web development different?

Why Hiyield?

Eco-conscious web development in Cornwall

We don’t just say sustainable – we show our workings. Every client gets a detailed report on the carbon impact of their website’s build, so you can see exactly what your site costs the planet and how we’ve kept it low. Here’s an example from our awesome client Stowable.

One team, every skill your project needs

Web development is the headline, but there’s more behind it: agile project management, UX and UI design, software development and ongoing support after launch. One team, no hand-offs to strangers, no gaps. Here’s how we do it.

developer sat at desk working with code open on their screens

Our Process

Drag

Discover

We start every project with a deep dive into your goals and aspirations.

Define

We lay down clear, strategic objectives tailored to your project’s needs.

Design

From sketches to prototypes, our designs look good and put the planet first.

Test

Real users, real feedback. We ensure what we’ve built truly resonates with its users.

Build

We create a digital solution that’s efficient, scalable, and green at heart.

QA

Every pixel, every line of code undergoes rigorous checks before launch.

Deliver

When it’s time to launch, we’re be here ensuring everything goes off without a hitch.

Web development in Cornwall FAQs

What web development services do you offer?

Bespoke website development, responsive web design, e-commerce, web app development and SEO – all from our cosy HQ in Truro, Cornwall.

Do you focus on any particular technologies or platforms?

Our bread and butter is WordPress and custom CMS builds, on solid foundations of HTML, CSS and JavaScript. We pick the right tool for the job, not the trendiest one.

How do you make sure websites are mobile-friendly?

Responsive design is standard in every build – your site will work properly on any device and screen size, no pinching and zooming required.

Can you help improve my website’s search engine ranking?

Yes – SEO best practice is built into how we develop, and our in-house SEO team can take it further with ongoing strategy.

Do you provide ongoing support and maintenance?

We do. As well as keeping things running smoothly, our retainers cover continual improvement – so as your ideas and business grow, your website keeps up.

How do you build sustainability into your web development?

Energy-efficient code, sustainable hosting and a carbon impact report for every project – so you can see the difference, not just take our word for it.

How do I get a quote for my project?

Book a call or send us a few details about your project. Our custom builds typically start from ÂŁ10,000, and we’ll give you an honest steer on scope – no hard sell.

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Let’s get started!

Whether you’ve got a fully formed brief or a rough idea scribbled on a napkin, we’d love to hear it. Let’s build something that does more good.