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Industry
Property Sales

From listing to mortgage math to LINE handoff.

Condos, new builds, land — fully supported. Floor plans, full photo galleries, mortgage simulator with adjustable years and rates, school-walk and POI maps, side-by-side comparison, auto-mailed PDF brochures, and one-tap LINE handoff to your agent.

Modern luxury home with large windows photographed at dusk
LIVE DEMO

月々支払いシミュレーター — 港区赤坂タワーレジデンス 中古マンション

Real mock of the screen we'd ship for your business. Live, clickable.

What we build (full list)

What we build (full list)

Property Catalog

Used condos, new/used houses, land — hi-res galleries, floor-plan viewer, 360° panoramas, faceted search by station walk time, building age, area and price.

Mortgage Simulator

Drag sliders for principal, rate, term and bonus payments to see monthly and total payments in real time, with fixed vs. variable rate toggle.

School & District Info

Walking minutes to the nearest public elementary/junior-high, district boundaries and distance to private schools rendered on Mapbox.

Neighborhood POI Map

Supermarkets, convenience stores, hospitals, parks and daycares within walking radius, auto-attached to every listing page.

Inquiry → Agent LINE Handoff

Leads from the web form fire instantly into the assigned agent's personal LINE for direct chat continuation.

Auto-Mailed Brochure PDF

Server-generated document combining listing details, floor plan, neighborhood map and mortgage results, emailed the moment the form is submitted.

Side-by-Side Comparison

2-3 properties: price, exclusive area, age, management fees, nearest station and yield in a diff-highlighted table.

Seller Submission Portal

Sellers enter property data, get a quick appraisal, then book an on-site valuation and sign the brokerage contract.

Closed-Price Market Trends

Public REINS Market Information and similar feeds plotted by area and floor plan to show price evolution over time.

Tech stack
Next.js 16 (ISR)PostgreSQL + PostGISMapbox GL JSPuppeteer / @react-pdf/rendererLINE Messaging APICloudflare R2 / S3Stripe / KomojuResend
Timeline

Discovery & spec 1 week → design + listing schema 2 weeks → catalog, search and maps 3 weeks → mortgage simulator, comparison, PDF and LINE integration 2 weeks → seller portal and market-trend chart 1 week → QA and launch 1 week. ≈10 weeks total.

Reach out on LINE or WhatsApp.

No form to fill. Just message us — first reply within 5 minutes.

LINE
@yibi_jp
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LINE QR: yibi_jp
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