Websites built for businesses that mean business.
Studio Expertise designs, builds, and optimizes client websites end to end (strategy, design, code, and SEO) for teams operating across English- and Korean-speaking markets.


Trusted by teams across Korea
Results, not promises.
Client sites shipped
22
No templates, no subcontractors
Organic clicks, 12 months
98K+
$0 ad spend, this site
Industries served
7
Real estate to healthcare to legal
Everything your site needs, nothing it doesn't.
Every engagement runs through the same discipline: design that's earned, code that's built to last.
Web Design
We start by mapping how your customers actually decide, not by picking a template. Wireframes move to high-fidelity design in tight iterations, refined until every page feels unmistakably yours and ready to scale as you add more.
- Interfaces built around how customers actually decide
- Wireframe to high-fidelity, refined until it's unmistakably yours
- Systemized for every page you'll add later
Development
Every site ships as production-grade code on modern stacks, deployed to infrastructure we monitor after launch, not a page builder wrapped in a subscription. Performance and Core Web Vitals are launch requirements, not follow-up work.
- Production code on modern stacks
- Deployed and monitored properly
- Built to scale past launch day
Bilingual Localization
Korean and English copy is written natively for each market, not machine-translated, including layout, tone, and calls to action that read naturally in both languages. One team handles both, so nothing gets lost in a handoff.
- Native English and Korean copywriting
- UX adapted per market, not translated
- One team, fluent in both
SEO & Growth
Technical SEO (structured data, clean URLs, fast Core Web Vitals) is part of the build from the first commit, not a bolt-on audit after launch. We stay on after launch to measure what's working and keep improving it.
- Technical SEO from the first commit
- Structured data and fast Core Web Vitals
- Built to be found, not just to look good
Four stages, one team
No handoffs, no context lost in translation.
Discovery
We learn your business, your customers, and what "done" actually looks like.
Design
Wireframes to high-fidelity, refined until it's unmistakably yours.
Build
Production-grade code, tested and deployed on infrastructure that scales.
Launch & Grow
We stay on to measure, iterate, and keep it fast.
Projects in the pipeline
22 live client websites shipped across real estate, legal & immigration, translation, tax, health, retail, and marketing. Every one is built end-to-end by our team and running in production today. Running a real estate brand? Ask about a white-label site built on our Seoul Homes platform.

Problem: The old site ran on WordPress, which made it difficult to customize, scale, or fix underlying technical SEO issues.
What we built: A fully custom rebuild from the ground up, with SaaS-grade performance on a dedicated server and database.
Result: Search clicks up 110% and impressions up 175% over the past several months, per Google Search Console.

Problem: Visa info in Korea was scattered across government sites and forums, hard for foreigners to figure out which visa type applied to them or what documents they needed.
What we built: An AI-assisted visa guidance platform. Visitors either browse by visa type directly or take a short quiz if they're not sure, get instant AI-powered answers through K-VISA AI, and can connect with a human visa specialist when they need one.
Result: Growth in SEO, helped many clients find scattered Korean visa information, and increased usage of K-VISA AI.

Problem: Client wanted a real estate platform of their own without building one from scratch, and needed it launched fast.
What we built: A white-label version of the Seoul Homes real estate platform, rebranded for James Realty, giving them the same underlying search and listings engine without paying for custom development from zero.
Result: A dedicated domain, growth in SEO, and independence from relying on another SaaS platform.

Read case study
Problem: Apostille and document legalization in Korea was confusing and scattered, with no single trusted place for foreigners to find verified specialists or understand the process.
What we built: A marketplace connecting people to apostille and legalization specialists, with browsing by document type or purpose, step-by-step guides, and a search-for-an-expert flow.
Result: Helped organize scattered apostille and legal work into one place, with a similar outcome to Mr. Visa Korea.

Read case study
Problem: Similar space to Apostille First. People needed a reliable way to find licensed agents for apostille, visa, and translation work in Korea, without guessing who's actually qualified.
What we built: A licensed-agent marketplace where users browse and compare verified agents by nationality or specialty, then request their service directly. An agent-directory model, versus Apostille First's document-type-first approach.
Result: Growth in inquiries to agents, more clients, and more revenue overall.

Read case study
Problem: Client wanted to offer apostille and visa consulting together under one personal brand, rather than clients having to go to separate services for each.
What we built: A personal consultancy site combining apostille and visa services under one brand, positioning James Apostille as a single point of contact for both instead of a marketplace of multiple agents.
Result: A dedicated website with its own content and its own customers, independent of any marketplace platform.
Choose the scope that fits
Every tier gets the same team and the same production-grade code. Only the scope changes.
Not sure which fits? Basic: a few pages. Premium: a growing multi-page site. Pro: complex features and integrations. Custom: you pick the language, framework, and database.
Maintenance + 1 update/mo
Doesn't apply to the Custom plan, priced separately
The monthly fee is billed regardless of how many inquiries come in through the form.
← swipe to see all 4 plans →
All four plans, side by side
Every plan is fully custom coded. This is what actually changes between them.
← swipe to see the full comparison →
| Basic | Premium | Pro | Custom | |
|---|---|---|---|---|
| Best for | A simple site to get online fast | A growing business that needs more pages | Complex features and integrations | A project with specific technical requirements |
| Pages & scope | 1–3 pages | Multi-page site | Multi-page site with custom features | Scoped entirely to your project |
| Tech stack | Our standard stack, fully custom coded | Our standard stack, fully custom coded | Our standard stack, extended for your features | Language, , and picked for your project |
| SEO | Core on-page | & | Ongoing & growth support | Scoped to your project |
| Support after launch | Launch support | 30 days of post-launch support | Dedicated team throughout | Ongoing dedicated support |
| Contact channels | Inquiry form | Inquiry form | Inquiry form + social channels | Inquiry form + social channels |
| Starting price | KRW 300,000 | KRW 500,000 | KRW 1,000,000 | Custom quote |
| Monthly fee starts | Month 2 ( free in month 1) | Month 2 ( free in month 1) | Month 4 (months 1 to 3 free) | Month 4 (months 1 to 3 free) |
A studio, not an agency roster
Based in Seoul, working everywhere
Studio Expertise is the web design, development, and SEO practice of Expert Sapiens, building considered, high-performing websites for clients across Korea and the English-speaking world.
No templates, no subcontracted freelancers, no shortcuts. The people who scope your project are the people who build it.
Questions, answered
Everything prospective clients ask before starting a project.
Do you build bilingual English and Korean websites?
Yes. Bilingual delivery is core to how we work. Every project gets native English and Korean copywriting and UX adapted per market, not machine translation, handled by one team fluent in both.
Do you subcontract work to freelancers?
No. Studio Expertise doesn't use templates or outside freelancers. The same team that scopes your project designs and builds it, start to finish.
How long does a website project take?
It depends on scope. The Basic plan is built for a fast launch: weeks, not months. Premium and Pro projects run longer to cover bilingual and custom integrations.
Is Studio Expertise part of Expert Sapiens?
Yes. Studio Expertise is the web design, development, and practice of Expert Sapiens, based in Seoul.
What's included in the Basic, Premium, and Pro plans?
All three are fully custom coded, not a or . Basic covers a single-page or few-page site with mobile-first design and core on-page . Premium adds a multi-page site, bilingual EN/KO , , , and 30 days of post-launch support. Pro adds custom features and integrations, a dedicated team throughout, and ongoing SEO and growth support.
Do you handle SEO, or is that a separate service?
is built in from the first commit, not added on afterward. , , and fast are part of every build.
Is there a monthly fee after launch?
Yes. Basic, Premium, and Pro are a one-time build fee plus a monthly fee of KRW 50,000 (1 update) or KRW 100,000 (4 updates), covering , upkeep, and work. On Basic and Premium, month 1 is the build fee only with SEO at no charge, and the monthly fee starts in month 2. On Pro and Custom, months 1 to 3 carry no monthly fee and it starts in month 4. The monthly fee is billed regardless of how many inquiries come in. Custom's monthly amount is scoped after reviewing your project.
Where is Studio Expertise based, and do you work with clients outside Korea?
We're based in Seoul and work with clients across both Korea and English-speaking markets.
How many websites has Studio Expertise built?
22 live client websites to date, spanning real estate, legal & immigration, translation, tax, health, retail, and marketing.
Do you offer support after the site launches?
Yes. Premium includes 30 days of post-launch support, and Pro includes ongoing and growth support for as long as you need it.
How do I get started?
Send a project inquiry through the contact form. We reply within one business day.














