Sanity CMS Agency: Structured Content That Scales

Sanity CMS Development

Sanity CMS development is how we build structured content systems for teams whose current CMS has become a bottleneck rather than a tool. It's for product and marketing leaders who need one content source to feed a website, a mobile app, and sometimes a partner portal or digital signage, without duplicating entries or wrestling a database migration every time a schema needs a new field. What changes: your schema moves out of a vendor's locked interface and into version-controlled JavaScript files that live in your repository, your editorial team gets real-time collaborative editing inside Sanity Studio, and your frontend developers query content with GROQ instead of over-fetching REST responses. We pair Sanity with Next.js or Astro depending on whether you need server rendering for personalisation or static output for raw speed. A typical engagement runs four to eight weeks: the first one to two weeks map your content model and get schema signed off by the editorial team, the middle stretch builds Studio customisations and GROQ queries against a working dataset, and the final weeks connect webhooks, deploy Studio to Sanity's managed hosting, and test real-time preview end to end. Cost is fixed-fee, scoped after a short discovery call once we know how many content types, locales, and frontends are involved -- see /pricing/ for how we structure that. If your content is genuinely simple, a lighter CMS or a static site will serve you better and cost less to build.

Who this is for -- and when it's the wrong choice

We take on Sanity work when a client is hitting one or more of these walls: content locked inside a vendor's UI with no way to customise the editing experience, schema changes that require a database migration instead of a pull request, rich text stored as raw HTML strings that someone has to sanitise before it's safe to render, editorial teams who can't collaborate in real time because the CMS locks documents, or separate content databases per site and region that quietly drift out of sync until nobody trusts the data anymore.

If we recognise two or more of those in your setup, Sanity is worth the investment. Schema-as-code fixes the migration problem. Portable Text fixes the raw-HTML problem. Real-time collaborative editing fixes the locking problem. Dataset architecture fixes the multi-site drift.

It's the wrong choice if you're running a small brochure site with five pages that change twice a year, or if your team wants everything configured through a UI with no developer-defined schema at all. In those cases you'd be paying for a content lake and a query language you'll never stress-test. Something simpler gets you live faster and costs less to run.

How we do it

We start by mapping your content model before anyone opens a code editor. Content types, reference relationships, array fields, and Portable Text extensions get documented and signed off by your editorial team first -- this is the single biggest predictor of whether a Sanity project stays on budget. We've seen it go both ways, and the difference always traces back to this step.

From there, a typical build breaks into three phases over four to eight weeks:

• Weeks one to two: content modelling, schema design in TypeScript, and a working Sanity Studio deployment your team can start testing against real content.
• Weeks three to five (for larger builds): Studio customisation -- custom input components, desk structure, document actions -- plus GROQ queries written and tested against your dataset in Sanity's GROQ Playground, each documented with the exact shape it returns so frontend developers have a contract to build against.
• Final weeks: webhook integration so publishing a document triggers a rebuild on your hosting platform, real-time preview wired up through Next.js Draft Mode or Astro, and a handover session with your editorial team.

What you get at the end: a Studio deployed to Sanity's managed hosting at your own .sanity.studio URL, schema files living in your own repository under version control, documented GROQ queries, and a frontend on Next.js or Astro pulling from Sanity's CDN with static generation for published content and live API calls for draft preview. No servers to patch, no SSL certificates to renew on the Studio side.

What we've shipped

For bdManagedIT, a Central-Georgia managed IT provider, we rebuilt an ageing WordPress site onto Astro and Sanity, hosted on Netlify. The rebuild covers service, industry, and location pages, HIPAA, PCI-DSS, CJIS, and SOX compliance guides, a HubSpot CRM integration, and full AI-search schema markup, and it now scores 95+ on PageSpeed with zero-JS static pages. Read the case study.

For SleepDr.com, a sleep medicine practice, the brief was different -- a HIPAA-safe migration off WordPress onto Next.js 15, Payload CMS, and Supabase, with patient forms routed through HIPAA-compliant Jotform so no PHI ever touches our servers. That project built medical schema markup, 20 city landing pages, and four-language support, and took Lighthouse from 35 to 94, with a verified 5.0 Clutch review to back it up. Read the case study. It's not a Sanity build, but it runs the same underlying discipline: structured content, schema-first thinking, and a frontend that doesn't fight the content model.

This site, socialanimal.dev, runs on Astro 5 and Supabase with React islands across 1,797 English pages and 11 languages, with an AI content engine scoring output through Winston AI, deployed on Vercel -- proof that we run the same architecture we sell, at a scale most agency sites never attempt.

Sources

Sanity's own documentation is the reference for schema design and GROQ syntax (sanity.io/docs). For how we pair Sanity with a frontend, Next.js's App Router docs (nextjs.org/docs/app) and Astro's islands architecture docs (docs.astro.build/en/concepts/islands/) cover the rendering models we choose between. Hosting and deployment details for both Studio and frontend sit on Vercel's docs (vercel.com/docs).

If you're comparing Sanity against other headless platforms before committing, our comparison of Sanity, Contentful, and Storyblok and our notes on running Sanity Studio at 3,000+ posts both go into more detail than fits here. If Next.js is your frontend of choice, see our Next.js development capability page too.

Ready to see whether Sanity is the right fit for your content model? Get in touch and we'll tell you honestly -- including if the answer is no.