Legal · Do this yourself

Help renters get their security deposit back.

On X, 69 posts matched our search for this problem in the 7 days to 2026-10-15.

🔥 69 posts this week · 286 likes

Based on @SpinJinx on X (opens in new tab)

The problem (from X)

Renters regularly post about landlords keeping their security deposits with weak excuses.

69 posts matched our search in the 7 days to Oct 15, 2026; the top matching posts drew 286 likes, 32 reposts and 31 replies.

What people are posting (in our words)

The business below is our own idea for solving this problem, not a company described in these posts.

Who it’s for

Renters, students and tenant groups.

Adapt it to your industry

  • Start with one city, niche or customer type, then expand.
  • Ask your first 10 customers what they would pay before you build more.
  • Keep a human check on anything that is sent in a customer’s name.

Step by step

  1. Make a free move-in photo checklist as a lead magnet.
  2. Write a prompt that drafts a deposit demand letter using the renter’s facts and their state’s deposit rules (linked official sources).
  3. Offer a paid “letter + deadline tracker” by Stripe.
  4. Share it with student housing groups and renter subreddits, following rules.
  5. Always tell users to check their local law; offer small-claims guides, not legal advice.
  6. Collect feedback on outcomes (with permission) to improve.

Ready-to-copy prompt

I moved out of my apartment in [city, state] on [date]. My deposit was $[amount]; my landlord kept $[amount] for [reasons]. Here are my move-in and move-out notes: [paste]. Draft a firm, polite demand letter citing the state deposit deadline rules (tell me which to verify).

Start with AI

Opens the AI with this guide and the prompt filled in.

Open in ChatGPT (opens in new tab)Open in Claude (opens in new tab)Open in Grok (opens in new tab)
Time
1–3 hoursOur estimate

Your launch plan

Everything to build it, get customers and get paid, in order. Prices are public list prices, checked Oct 15, 2026.

  1. Sign up for Claude (incl. Claude Code) (opens in new tab) (Free tier · Pro $20/mo).
  2. Sign up for Carrd one-page site (opens in new tab) (Free tier · Pro Standard $19/yr (≈$1.58/mo, custom domain)).
  3. Build the first version: follow the steps above, or press “Open in ChatGPT/Claude/Grok” to get help.
  4. Set up payments with Stripe payments (opens in new tab) (No monthly fee · 2.9% + 30¢ per card payment) and put the payment link on your page.
  5. Get customers. Reddit: answer questions in the subreddits your customers read; follow each subreddit’s self-promo rules (free).
  6. Get customers. SEO: one helpful page per question your customers search for (free).
  7. Get customers. Communities: Facebook groups, Discord and Slack groups in your niche (free).
  8. Offer your first 3 customers a “founding” price for honest feedback and a testimonial.
  9. Charge $29 per letter (fixed price per letter), and ask every happy customer for one introduction.
Monthly cost$0–$22/monthFree tiers → paid plans of the tools above. Card fees come out of each sale.
What you could earn · EstimateEstimate: 25 letters a month × $29 = $725/moOur estimate, not a fact or a promise. It’s simple math if you land these customers at this price.
Details: source, numbers and tags

What they did

A move-in/move-out photo checklist plus an AI-drafted deposit demand letter based on local rules. We designed this business around a problem people post about on X; it is an idea, not a report of an existing company.

How it went

On X, 69 posts matched our search for this problem in the 7 days to 2026-10-15. The 22 top matching posts we checked drew 286 likes, 32 reposts and 31 replies.

Worth knowing

Self-help writing, not legal advice. Link official state sources and let users verify.

Difficulty
BeginnerOur rating
Time to build
Not reportedOur estimate
Monthly cost
Not reported
Revenue
Not reportedWe only show revenue the source states
Engagement
No public countThe source shows no number
X buzz
43.9 · 69 posts in 7 days286 likes, 32 reposts, 31 replies, 2 quotes on 22 top posts · fetched Oct 15, 2026 · query: "security deposit" (landlord OR "get it back" OR kept OR withholding OR "won't return") -is:retweet lang:en

Posted · Added Oct 15, 2026

Original builder recipe

  • ChatGPT
  • Claude
  1. Make a free move-in photo checklist as a lead magnet.
  2. Write a prompt that drafts a deposit demand letter using the renter’s facts and their state’s deposit rules (linked official sources).
  3. Offer a paid “letter + deadline tracker” by Stripe.
  4. Share it with student housing groups and renter subreddits, following rules.
  5. Always tell users to check their local law; offer small-claims guides, not legal advice.
  6. Collect feedback on outcomes (with permission) to improve.

Tags

Read the original

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