Web Development Agency

Websites built to be found, and to convert

Terrier is an SEO and AI visibility agency that builds websites. That order matters. Most rebuilds arrive at an SEO agency after launch, when the redirect map is already wrong, the new template has stripped the copy that was ranking, and three months of traffic have gone. We put the search research at the front of the project instead, so the site that goes live is the site the research asked for.

We build on WordPress and Shopify for most clients, and on Next.js with Supabase where a project needs an application rather than a website. Hosting sits on Vercel or Netlify for the application work. The choice is made on what you need to run day to day, rather than on what we prefer to maintain.

The build itself runs on AI coding tools with senior review behind them. That is why a prototype takes days rather than weeks. You see a working version of the key templates, in a browser, on your phone, before you sign off the full build. Nothing here is generated and shipped unread. Patrick reviews the structure, the templates and the front end code, and the build team ships it.

If the site already exists and only needs search work rather than a rebuild, start at SEO or the platform pages for WordPress SEO and Shopify SEO.

How a Terrier build runs

Phase Zero: search and entity research before a single screen is designed

We crawl the current site, pull Search Console and analytics history, and establish which URLs actually earn traffic, enquiries or revenue today. Alongside that we build the keyword map, so every commercial term has one page that owns it, and the entity map of products, locations and topics your brand needs to be associated with before an assistant will name you. The sitemap for the new site comes out of those two documents. Navigation, URL structure and template list are all decided here, in writing, before design starts.

Prototype: a working version in days

You get a clickable build of the homepage and the two or three templates that carry the commercial load. It runs in a browser with real content in it, not a flat image of a page. You review it, we change it, and only then does the full build begin. Two prototypes built this way are live examples of the approach: a product tester web app for Sons on Next.js and Supabase, and the triage page and patient form flows for Keogh Practice.

Build: templates, content and speed

Templates are built against the Phase Zero map, with headings, internal links and schema hygiene designed in rather than added later. Content is migrated page by page, and the pages that carry rankings keep the copy that earned them. Core Web Vitals are treated as a build requirement rather than a post launch fix. We rebuilt our own site on WordPress this way and took the mobile speed score from 78 to 100.

Migrate: the redirect map is written before launch week

Every existing URL is mapped to its destination, including the ones with no obvious equivalent. Internal links are rewritten to point at final URLs rather than through redirect chains. Schema, canonicals and hreflang move with the pages. The map is signed off before the launch date is set, because migrations lose traffic when the redirects are written in the week of go live.

Launch: monitored daily, not handed over and forgotten

We watch indexing, crawl errors, rankings and conversions daily through the switchover, and fix what moves. You get access to everything: the hosting, the repository, the analytics and the CMS. The site is yours on day one.

Ninety days of care

Every build includes 90 days of care after launch. Updates, backups, security patching and the small changes that always surface once real users arrive. After that you can continue on a care plan, move to a development retainer, or take it in house.

What we do, and what we will not do

We build bespoke templates on a well supported platform. We write the redirect map before the launch date. We give you the code, the hosting account and the CMS logins. We build the site so that it can be edited by your team without a developer for routine changes. We test on real devices before launch, and we include AI visibility work in the build, because the pages assistants quote are largely the pages that already rank.

We will not sell you a theme with your logo on it and call it bespoke. We will not start a build without the search research, because a beautiful site pointed at the wrong URLs is an expensive way to lose rankings. We will not migrate a site without a signed redirect map. We will not lock you into proprietary hosting you cannot leave. We will not quote a fixed price for a scope nobody has written down yet.

Proof

William Sugg & Co: a WordPress rebuild delivered with SEO, followed by a 79% visibility lift.

Sons: a product tester web application prototyped and built on Next.js and Supabase.

Keogh Practice: a patient triage page and the form flows behind it.

Our own site is the fourth example. It was rebuilt on WordPress and its mobile speed score moved from 78 to 100. More work is on the case studies page.

What a website costs

We publish our build prices, which most agencies do not. All figures exclude VAT. A quote against a written scope follows the first call, and we would rather tell you on that call that the budget does not match the brief than find out in week six.

A landing page starts at £950. A WordPress brochure site starts at £6,500. A WordPress site with e-commerce, or a Shopify build, starts at £8,500. Where a project sits above those floors depends on the number of templates, how much content has to be migrated and whether integrations are involved.

After launch, a care plan is £250 a month for updates, backups, security and two hours of changes, and a development retainer starts at £600 a month for 10 hours. There is no minimum term, 60 days’ notice, at any point. The full breakdown, including what moves a build up or down a band, is on the web development pricing page.

If you want the build and the search programme on one invoice, the Growth Partner plans bundle them.

Who does the work

Patrick MacNamara, our founder, fronts Web Design & Development. He runs Phase Zero, builds the prototype you review, and reviews the templates and front end code before launch, with the build team behind him. His profile is on the team page. Search and AI visibility work inside a build is run alongside the rest of the SEO and GEO practice, so the people who will have to rank the site are the people who specified it.

You will know who is working on your build by name, and you talk to them rather than an account manager. To get a scope and a figure, tell us what you are building.