I'm Building a Tenant Rights Tool for Korea's Unique Rental System

Source: Dev.to

Korea’s Rental System, Explained in 60 Seconds

In most countries you rent an apartment by paying monthly. Korea also has a monthly‑rent system called Wolse (월세), but the dominant system for decades has been Jeonse (전세):

• You give your landlord a massive lump‑sum deposit — often 50‑80 % of the property’s value (roughly $100 K–$300 K USD for a typical apartment).
• You pay zero monthly rent; the landlord invests the deposit and keeps the returns.
• When the lease ends (usually after 2 years) you receive 100 % of your deposit back.

Sounds great in theory, but in practice it can be a minefield.

The Problems I’m Facing Right Now

I’m a tenant in Seoul and dealing with several issues as my lease ends:

1. Landlord Gone Silent

My landlord is completely unreachable—no calls, no texts. This is terrifyingly common in Korea.

2. Automatic Lease Renewal Trap (묵시적 갱신)

If neither party gives notice before the lease ends, the lease automatically renews under the same terms. While it sounds tenant‑friendly, it creates a grey zone that landlords exploit, delaying the return of the deposit.

3. Sending Legal Notices (내용증명)

To protect your rights you need to send a certified legal notice (내용증명). The process is confusing, templates are hard to find, and many tenants don’t even know they need to do this.

4. Getting Your Deposit Back

Even after following the proper steps, recovering the deposit can take months or years. Some tenants end up in court; others never get it back, especially when landlords are over‑leveraged or the property value has dropped below the deposit amount.

The Idea: DoNotPay, But for Korean Tenants

I’m building a tool that helps Korean tenants navigate and fight back—think of it as DoNotPay tailored to Korea’s rental system. The initial features include:

• Legal notice generator – Fill in your details and get a proper 내용증명 ready to send.
• Deadline tracker – Know exactly when to send notices, when your rights kick in, and what happens if you miss a date.
• Step‑by‑step guides – Plain‑language walkthroughs of the deposit recovery process.
• AI‑powered Q&A – Ask questions about your specific situation in natural language.

Tech stack (so far): Next.js + TypeScript on the frontend, with plans for a Korean legal NLP layer.

Why I’m Building in Public

This problem affects millions of Koreans, yet existing resources are:

• Scattered across government websites
• Written in dense legal Korean
• Practically impossible for younger or first‑time tenants to navigate

I want to document the journey—the legal research, technical decisions, wins, and losses—so others can benefit.

Want to Follow Along?

If you’re curious about Korea’s unique rental system, interested in legal‑tech, or building something in public yourself, follow me on Dev.to. I’ll post updates as I build.

If you’ve dealt with similar tenant issues anywhere in the world, I’d love to hear your story in the comments.

Building something that matters, one commit at a time. 🚀