Amela
Toshi Share Inc. — Platform Development Story

ℹ︎For confidentiality, company names, project names, and system images have been replaced with pseudonyms and mock-ups.

Monetizing idle spaces, built in-house from scratch.

PlaceLink is a three-sided marketplace for transacting idle, unused spaces — meeting rooms, studios, event venues and more — by the hour or by the day. It is one of Japan's leading space-sharing platforms, connecting guests, hosts, and operations.

Monetization, space search, in-app payments, and trusted transactions — the story of launching a new platform that satisfies all four pillars the sharing economy needs at once, built in-house from scratch in nine months.

Booking conversion
+40%
Search-to-booking conversion
Vacancy utilization
+35%
Monetizing idle spaces
Payment lead time
-60%
Complete the process in-app
Platform delivered
3 apps
Guest / Host / Operations
Hello, Guest
Find nearby spaces
Shibuya · meeting room · 8 people
Meeting room Studio Event
Shibuya glass-walled meeting room
★ 4.9 · 8 people ¥1,200/hr
Book now
Shinjuku photo studio
01
CLIENT
About the client

Toshi Share Inc., one of Japan's leading players driving the sharing economy.

Toshi Share Inc. runs a space-sharing business that turns the city's idle, unused spaces into value. It offers a marketplace where diverse spaces — meeting rooms, studios, event venues, shops, and shared kitchens — can be transacted by the hour or by the day.

The business model is a three-sided marketplace. Hosts who want to lend space, guests who want to rent it, and the operations team that keeps transactions safe all meet on a single platform, completing search, booking, payment, and reviews end to end.

Listed spaces
Thousands-scale
Coverage area
Major metro areas
Surfaces
3 apps
BUSINESS FLOW
1
STEP 01 · Host
List a space

List vacant spaces with photos, pricing, and amenities.

2
STEP 02 · Guest
Search & booking

Search by area, use, and capacity, pick a date and time, and book.

3
STEP 03 · Guest
In-app payment

Complete card payment with Stripe.

4
STEP 04 · All three parties
Use & review

Two-way reviews after use, with operations ensuring safety.

02
CHALLENGE
Design challenges to solve

The four structural requirements demanded of the platform.

None of these were questions of technology choice; they were business requirements tied directly to revenue, customer satisfaction, and market competitiveness. Building anew from scratch demanded a design that made them all hold true at once.

Fail to monetize vacant spaces, and lost opportunity becomes the norm

Design a flow that lets hosts list idle spaces easily and earn recurring revenue, and bring buried inventory to market.

Without easy discovery, guests never reach a booking

Get the design that instantly surfaces 'nearby, matching' spaces by area, use, and capacity wrong, and search abandonment rises.

If payment is disjointed, booking completion rates fall

Unless booking through payment flows seamlessly within the app, the hassle of inquiries and on-site payment means guests drop off midway.

Without guaranteed safety, transactions simply don't happen

Unless identity verification, reporting, blocking, and two-way reviews are built in from the start, trouble erodes trust in the platform.

03
ARCHITECTURE
The architecture we built together

Turning space transactions into an 'unstoppable foundation' across four domains.

We built all three surfaces — the guest app, the host app, and the admin console — entirely in-house from scratch on a shared API foundation. Location matching, Stripe payments, messaging, reviews, and moderation are bound into one seamless experience, crafting the core of the sharing business from the very start.

Amela
EXECUTION
9 months
Duration
54 person-months
Total effort
Domain ①
Search & matching
Challenge

The need to instantly surface 'nearby, matching' spaces by area, use, and capacity.

Solution
Location-based matching search

Maximize discoverability with area × use × capacity filters and nearest-first ordering.

Domain ②
Booking & payment
Challenge

The need to complete hourly and daily bookings through payment entirely within the app.

Solution
Stripe seamless payment

Automatic fee and tax calculation with Stripe payments, integrated into the booking flow.

Domain ③
Communication
Challenge

The need to keep pre- and post-transaction exchanges and reviews inside the platform.

Solution
In-app messaging + two-way reviews

Make trust visible through push-notification-linked chat and two-way reviews.

Domain ④
Safety & operations
Challenge

A mechanism is needed to remove bad actors and let operations keep the community healthy.

Solution
Reporting & blocking + CMS moderation

Establish identity verification, reporting, and blocking, plus an admin-console review flow.

TECH STACK
Frontend
React NativeNuxt.jsVuetify
Backend
ExpressTypeORMMySQLRedis
Infra & integrations
StripeAWS S3OneSignal
04
IMPACT
The value the platform creates

Toshi Share Inc.'s space utilization accelerates.

This foundation continuously produces business outcomes — monetization, a smooth booking experience, and transaction trust — rather than mere technical metrics.

A foundation that monetizes idle spaces

Put unused spaces on the market so hosts can earn revenue.

Find matching spaces right away

Location matching can lift conversion from search to booking.

A design that maximizes booking completion

In-app payment removes process fragmentation and curbs drop-off.

Transact with peace of mind

Identity verification, reporting, and reviews sustain a healthy community.

🔑
STAKEHOLDER
Host (lender)
Space provider
Generally

Vacant spaces tend to stay dormant instead of generating revenue.

At Toshi Share

List in minutes and earn recurring revenue through hourly and daily rentals.

Business impact
Vacant-space utilization +35%

Idle inventory becomes a revenue source.

🔍
STAKEHOLDER
Guest (renter)
Space user
Generally

Guests easily give up booking due to the hassle of inquiries and on-site payment.

At Toshi Share

Everything from search to payment is completed in-app for instant booking.

Business impact
Booking conversion +40%

Search-to-booking conversion improves.

🛡️
STAKEHOLDER
Operations team
Platform management
Generally

Trouble handling lags behind, and trust is easily eroded.

At Toshi Share

Reporting, blocking, and CMS review keep the community healthy.

Business impact
Booking-to-payment lead time -60%

Scalable while keeping operational load low.

05
DEMO
Three scenarios

Experience PlaceLink through a live, working demo.