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Flatte - Rental Management Platform

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Flatte logo
See the case study of Flatte
IndustryPropTech
Headcount10-50

Making rental property management effortless for everyone, from owners and tenants to property managers.

Flatte offers comprehensive rental property management services supported by a digital platform for owners, tenants, and employees. The solution streamlines rental operations, automates settlements, and simplifies property management through integrated tools.

Making rental property management effortless for everyone, from owners and tenants to property managers.

Flatte offers comprehensive rental property management services supported by a digital platform for owners, tenants, and employees. The solution streamlines rental operations, automates settlements, and simplifies property management through integrated tools.
3
apps built: a Flutter tenant app, a web landlord portal, a back-office CRM for operators
3
apps built: a Flutter tenant app, a web landlord portal, a back-office CRM for operators
4
Polish cities where Flatte offers its services
4
Polish cities where Flatte offers its services
8
months to take over Flatte’s rental management platform and deliver the rent settlement system
8
months to take over Flatte’s rental management platform and deliver the rent settlement system
See the case study of Flatte
Polish PropTech company

About the Client

Flatte is a Polish PropTech company offering comprehensive, tech-driven rental property management services in Warsaw, Wrocław, Kraków and Łódź. Combining professional property management with innovative IT tools, Flatte handles the entire long-term rental process, from tenant acquisition and rent collection to ongoing property maintenance, cost management and monthly financial settlements.
Smarter rental management

About the App

Flatte offers three dedicated apps for tenants, property owners, and employees. The tenant mobile app simplifies rent payments and maintenance requests. The owner web app provides access to contracts, financial settlements, and tax reporting data. The employee web app streamlines property management, automates settlements, and enables full control over rental operations.

Challenges

 rent settlement system

No rent settlement system in a growing rental management platform

No rent settlement system in a growing rental management platform

In property management, one utility invoice can be paid by the tenant, by the owner, split between them when a lease starts mid-month, or covered by an earlier overpayment. Rent and commission change over time, and some owners rent out several apartments. The rental management platform Flatte had did not settle any of this. Flatte needed clear settlement rules and a system that applies them to every apartment, tenant and owner.
Automation of flat rental operations

Automation of flat rental operations

Automation of flat rental operations

Flatte's operators logged into each client's account with water suppliers, housing administrations and other providers, downloaded the bills and retyped the amounts into the platform. This work grew with every new apartment under management, so operating costs rose with the rental portfolio instead of staying flat. We needed to automate the entire process.
Live rental management platform

Taking over a live rental management platform from another vendor

Taking over a live rental management platform from another vendor

We took over development of the Flatte platform from the previous provider, whose work the client was dissatisfied with. During the audit, we identified key areas of technical debt hindering effective product development. At the same time, Flatte planned to expand the application with additional features to address business challenges
Gradual app refactoring of Flatte

Gradual refactoring over a rental platform rewrite

Gradual refactoring over a rental platform rewrite

A rewrite would have frozen new features for months while Flatte was growing its portfolio and partnerships. We chose to reduce technical debt step by step: whenever a feature touched an older part of the rental management platform, the team redesigned that part. The platform stayed live for tenants and owners; we spread the cost across regular development, and Flatte decided with us which areas to fix first.

All settlements are completed within the Flatte system. Full transparency and consistency. Significant time savings through process automation.

Key features of Flatte

Features list

Solutions

Design a rent settlement system that covers all edge cases

Automated utility bill retrieval with BillTech integration

Online rent and utility payments in a single payment basket

Gradual technical debt reduction in the rental management platform

Design a rent settlement system that covers all edge cases

LeanCode defined the settlement rules with Flatte and built them into the rental management platform. Each tenant, owner and Flatte itself has a virtual account. The system handles rent and commission changes over time, utilities that affect the tenant's balance, provider overpayments split between the parties, one-off and maintenance fees, VAT and owners with several apartments. Operators now close every settlement in one system instead of side files.

Flatte App Features 1 & 2

Results

Save the client's time and money

We are particularly proud of the automation features we built into Flatte's rental management platform. The BillTech integration automatically fetches utility bills, and the rent settlement system calculates each party's balance without spreadsheets. Together, they have significantly reduced Flatte's operational workload and streamlined daily processes, so operators spend their time on tenants and owners.

Less manual work for property managers thanks to automation

Thanks to our previous experience integrating the BillTech service, we connected it to Flatte's rental management platform at a fraction of the cost and in record time compared to building the integration from scratch. Property managers no longer log into provider accounts to download bills and retype the amounts. Each bill now arrives automatically and lands in the right apartment's settlement.

New PropTech features delivered while reducing technical debt

Flatte was a challenging project because we took over a rental management platform we hadn't designed or built from the ground up. We had to balance developing new features, improving existing functionality and reducing technical debt. Together with the client, we agreed on priorities each cycle, so Flatte accepted every change and it delivered real business value for tenants and owners.

Review of our work

Flatte logo

LeanCode smoothly took over the development of our platform and helped us move rent settlements into a single system, automate bill payments via a BillTech integration, and introduce clearer settlement summaries for owners of multiple properties.

Patrick Kamiński Flatte
Patrick KamińskiCEOFlatte
5.0
Reviewed onClutch
Flatte logo

LeanCode smoothly took over the development of our platform and helped us move rent settlements into a single system, automate bill payments via a BillTech integration, and introduce clearer settlement summaries for owners of multiple properties.

Patrick Kamiński Flatte
Patrick KamińskiCEOFlatte
5.0
Reviewed onClutch

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Łukasz Kosman / CEO at LeanCode
Łukasz Kosman, CEO LeanCode
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Łukasz KosmanCEO at LeanCode