Services · Website development · Marketplace websites
Codeeo provides marketplace website development London founders and operators use to put a two sided platform on the web properly: search and category pages that rank, listing pages that convince, a seller recruitment section that fills supply, and enquiry and quote flows that reach the right provider. In a city where every category already has a well funded incumbent, the website is often the only place a new marketplace can out think the competition, so we build it around search intent, trust and speed.
Our team works with London clients remotely, running discovery, design reviews and acceptance testing by video call. The platform is built so your own staff edit pages, approve sellers and publish guides without asking a developer, and the code, content and data stay in accounts your business owns.
200+ companies servedFrom a first store to an ADX listed developer
What the platform includes
Most marketplace failures in London are not technical. The site launches with a few hundred listings spread thinly across dozens of categories and every postcode in the capital, search engines index thousands of near empty pages, and buyers bounce because nothing near them is available. We plan the web platform the other way round. Supply decides which pages exist, every indexable page has a reason to rank, and the routes into the site, whether from Google, a newsletter or a link shared in a neighbourhood group, land on something useful. The capabilities below cover presence, discovery and conversion on the website itself. Payments, payouts and dispute handling can be added on the same platform, but the work here is about making the marketplace findable, credible and easy to join. We order the features around your launch: a venue hire marketplace in Zone 1 needs different pages first from a home services platform covering outer boroughs.
Pages for combinations such as private dining rooms in Soho or tutors in Wandsworth are generated only where enough live listings exist. Below that threshold the page is kept out of the index and linked from a parent area instead. Thresholds are settings your team adjusts as supply grows.
Search engines only see London pages that can serve the person searching.
Buyers filter by price band, availability, capacity or rating, while the site controls which filter combinations get their own address, which carry canonical tags and which are blocked from crawling. Popular combinations can be promoted to proper landing pages with written introductions.
Rich filtering for buyers and a clean, focused crawl for Google.
Each listing type, whether a product, a service or a bookable space, has its own template and matching schema markup. Ratings appear in rich results only where reviews are genuinely collected on your platform, following Google's rules on review snippets. Good marketplace website design in London also means the price, location and next step sit above the fold on a phone.
Listings that read well to buyers and to search engines alike.
A separate set of pages speaks to providers: how the marketplace finds them work, what commission and fees depend on, what verification involves and how quickly they can go live. Each page ends in a short application that drops straight into your approval queue.
Supply grows from search and referrals, not only from sales calls.
For services that cannot be bought with one click, buyers describe what they need once and the platform sends it to matching providers by category, area and capacity. Providers reply with quotes inside the site, and your team sees every request that went unanswered.
No enquiry lost in an inbox, and a clear view of unmet demand.
Your content team publishes area guides, buying advice and seller stories from a structured editor, with live listings pulled into articles automatically. Drafts, scheduled publishing and approval roles are built in, so a guide to Shoreditch studio spaces never shows studios that have closed.
Content that stays accurate because it is wired to real supply.
Seller terms, the main ranking factors, review moderation rules and the complaint process are published in plain English and versioned. This supports the transparency duties to business users under the retained Platform to Business Regulation and the fake review rules in the Digital Markets, Competition and Consumers Act 2024.
Buyers and sellers can see how the platform treats them.
Cookie consent meets PECR and UK GDPR, with no tracking before a choice is made. Analytics separate buyer and seller funnels, so you can see which London campaigns bring sellers who actually list and buyers who actually enquire.
Marketing spend judged on real marketplace activity.
Listing grids with dozens of photos are built with responsive images, lazy loading below the fold and edge caching, and tested against Core Web Vitals on mid range phones. Templates are checked against WCAG 2.2 AA for keyboard use, focus states, contrast and screen reader labels.
Fast, usable pages for every visitor, including disabled users.
Who this is for
London rewards marketplaces that pick a narrow wedge and own it. Nobody beats a general directory by covering everything at once, but a platform that is plainly the best place to hire a rehearsal room in Hackney or find a vetted nanny share in Clapham can earn its rankings quickly. The four situations below each call for a different first release. In every case we ask which side of your market is harder to recruit in the boroughs you start with, because that answer decides whether the first pages speak to buyers or to sellers.
You have early supply and a hypothesis, perhaps photography studios or specialist tutors, and you need a credible site that proves demand before a funding round. We build a lean platform with a handful of strong area pages, a seller application and a quote request flow, measured carefully so the numbers you show investors come from real behaviour. The architecture leaves room for more categories without rebuilding the URL structure later.
Start narrow, measure honestly, expand on evidence.
Many London marketplaces begin on a no code tool or a theme with a marketplace plugin, and hit limits on search, page speed or custom seller rules. Custom marketplace website development in London at this stage means moving you onto your own platform while mapping every existing URL to its new address, carrying over listings and reviews, and watching Search Console closely after the switch so rankings are protected rather than reset.
Redirect mapping is planned before a single page is rebuilt.
Meeting rooms near Liverpool Street, rooftop terraces in Southwark and church halls in Islington all sell on photos, capacity, access details and location. We build listings with floor plans, step free access information, nearest stations, and enquiry forms that capture date, headcount and layout so hosts can reply with an accurate quote rather than a generic brochure.
Firms in the City and Canary Wharf buy catering, gifting, event services and freelance help, but they need company accounts, several authorised users, purchase order references and invoices with VAT shown correctly. We add a business section with its own landing pages and sign-up path, so procurement teams can use your marketplace without it changing for consumers.
How we work together
Most clients start with a fixed scope first release that covers the launch categories, seller recruitment and the search pages that matter most. After launch, a monthly retainer keeps new area pages, filters and content features coming as supply grows. Operators with a larger roadmap, such as adding business buyers or a second city, sometimes take a dedicated team of designers and developers who work inside their own planning cycle. All three run remotely, with shared boards and regular video reviews. Operators comparing a marketplace web development company in London with an in house hire usually find the retainer the easier way to test the fit before committing to a team.
A defined build with a deadline
We agree what the product has to do, write it down with a price and a date, and build exactly that. Changes are priced before they are made, not discovered on the invoice.
A product that keeps evolving
Named engineers who work your hours, join your standups and stay on the codebase. You direct the backlog; we own the quality of what ships.
Something live that needs looking after
A monthly block of hours for improvements, fixes and the small requests that otherwise wait months. Unused hours carry for a quarter.
Technology
We usually pair a server rendered front end such as Next.js with a headless CMS and a dedicated search index, because marketplace pages must be fast, crawlable and editable. Laravel or Node handle seller workflows and integrations. The exact stack follows your existing systems and the people who will maintain it. Whatever we choose, it is documented so a future developer can pick it up quickly and safely.
01Web
02Commerce
03Data and cloud
04Marketing and tracking
Mainly the number of listing types, how sellers are approved and how much content launches with the site.
A marketplace with one listing type and a simple seller application costs far less than one with products, services and bookable spaces, each needing its own template and search rules. Seller verification depth, the number of launch categories and areas, integrations with your CRM or accounting system, migration from an existing platform and the volume of written content all move the budget. We price each of these separately in the proposal so you can choose what launches first.
Schedule a free consultation and get a written recommendation, with costs, before you commit to anything.
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