One appfor landlords and tenants.

Finally, one app that brings both sides together: landlords and tenants. Collect rent by SEPA direct debit, create the Nebenkostenabrechnung in minutes, keep every deadline in view. Free forever for tenants.

I'm a landlord I'm a tenant
Data hosted in Germany GDPR-compliant No credit card needed
Both sides

One app. Two sides. Always fair.

Renting out and renting belong together. HausMaus gives both sides the same clear overview — transparent and fair.

For landlords

Rent out without the admin

The work of a property manager — in your hands, in one app. You keep the overview, HausMaus handles the routine.

  • Collect rent automatically via SEPA
  • Utility statements (Nebenkosten) in minutes
  • Anlage V tax data, export in minutes
  • Reviewed templates, approved by you
For tenants

Rent with a clear overview

Everything about your home in one place — no landlord invite required. You stay on top of deadlines, documents, and messages.

  • Upload and store your lease
  • Deadlines and dates tracked automatically
  • German letter templates for your landlord
Built on German property law

Every step is aligned with German tenancy law.

From the Nebenkostenabrechnung to deadlines and templates – HausMaus keeps the rules of German property law (BGB, BetrKV & more) in mind at every step. So everything stays transparent and fair for both sides.

Features

Everything at your fingertips — in one app on your phone

Rent, Nebenkosten, deadlines, messages and documents: six tools that work together. No spreadsheets, no paper stack — all of it a tap away.

Rent via SEPA

The rent arrives on its own. Set it up once, then it's collected on time every month by SEPA direct debit — straight between tenant and landlord.

Utility statements in minutes

Enter the usage, pick the allocation key, done. The Nebenkostenabrechnung takes shape as you type — clear for both sides.

Deadlines in view

Termination, rent increase, annual statement: HausMaus reminds you in good time, before a date creeps up — no stress.

Messages in one place

Landlord and tenant write directly in the app. Requests, dates, and agreements stay documented — nothing gets lost.

Move-in & move-out

Handover with photos and a protocol. The condition of the home, cleanly recorded — fairly documented for both.

Letters & templates

Reviewed German templates, drafted by AI and approved by you. You read, check, print — the wording is already there.

In three steps

It starts this simply

No data migration, no long setup. Everything's running in minutes.

1

Sign up

Download the app, add your home. One apartment or many — ready in minutes.

2

Set up

Add the lease, the rent, and the tenant. HausMaus arranges the rest and suggests the next steps.

3

Let it run

The rent comes in, deadlines are in view, the statement is prepared. You just look it over.

Pricing

Fair and simple

For landlords

Free up to 3 apartments

€0

Manage up to three apartments free. From the fourth apartment: from 1% of the cold rent (Kaltmiete) per apartment — a small, transparent monthly fee, kept separate from the rent and cancellable monthly.

  • Up to 3 apartments free · cancel monthly · no hidden fees
  • From 4 apartments: from 1% of cold rent per apartment — tax-deductible as Werbungskosten
Secure your spot
For tenants

Free

€0

The app is always free for tenants — pay rent, track Nebenkosten, store documents and message your landlord at no cost, ever.

  • No fees, no card required
  • Early access before HausMaus opens to everyone
Get early access
Data hosted in Germany GDPR-compliant Built on German property law Built for landlords and tenants together

HausMaus provides general information and templates — not legal advice. When in doubt: a tenants' association (Mieterverein) or a lawyer.

Frequently asked

Good to know

HausMaus is an app that brings renting and renting out together in one place: collect rent by SEPA direct debit, prepare utility statements, keep deadlines in view, exchange messages, and use reviewed templates — for private landlords and their tenants in Germany.
For private landlords with one or more apartments, and for their tenants. One app, two sides — both get the same clear overview.
Yes. Tenants can use HausMaus independently — upload your lease, track deadlines, use templates — with no invitation from the landlord. For tenants it's free.
You set up the SEPA direct debit once, then the rent arrives on time every month on its own. Rent is paid directly between tenant and landlord — HausMaus keeps none of it.
Your data is stored in Germany and processed in line with the GDPR.
No. HausMaus offers general information and templates, but not legal advice. When in doubt, contact a tenants' association (Mieterverein) or a lawyer.
For tenants it's free forever. Landlords with up to 3 apartments use HausMaus free too; from the fourth apartment it's from 1% of the cold rent per apartment.
With HausMaus you upload the utility statement and go through each item clearly. The app shows what was allocated and how — under §556 BGB and the German operating-costs regulation. Free for tenants.
Yes. HausMaus keeps the rules of German property law in mind at every step – from the Nebenkostenabrechnung (§556 BGB, operating-costs regulation) to deadlines and templates. So everything stays transparent and fair for both sides. Note: HausMaus offers general information and templates, not legal advice.

Guides

Knowledge for
both sides.

Plain-language guides to German tenancy law – what the rules actually say, and how to apply them. Free to read, no account needed.

For landlords

Renting out, handled.

Nebenkostenabrechnung: A Landlord's Guide for Germany → Mieterhöhung in Germany: A Landlord's Guide (§ 558 BGB) → Creating a Mietvertrag as a landlord → Landlord termination of a tenancy (§ 573 BGB) → Withholding or Returning the Kaution: Landlords → Rent increase after modernisation: pass on 8 % → Mietpreisbremse: What Landlords Must Know When Re-Letting → Rent Arrears and Mahnung: A Landlord's Guide → Übergabeprotokoll for Landlords: document it right → Taxing rental income: the Anlage V for landlords → Taxing rental income: the overview for landlords → Heizkostenabrechnung: A Landlord's Guide for Germany → Pass Grundsteuer on to Tenants: Guide → Staffelmiete or Indexmiete: how to agree it → Eigenbedarfskündigung: How to Justify It → Räumungsklage for Rent Arrears: Guide → How to Hold and Invest a Mietkaution → Move-in handover: the Übergabeprotokoll for landlords → Allow or Refuse Untervermietung? Landlord Guide → When may a landlord enter the rented flat? →
All landlord guides →
For tenants

Rent with a clear overview.

Mietminderung: Your Rights as a Tenant in Germany → How to Check Your Nebenkostenabrechnung as a Tenant → Reclaiming your Kaution: when do you get it back? → Mietpreisbremse check: Am I paying too much rent? → Check a Mieterhöhung: Is the rent increase legal? → Ending Your Lease as a Tenant: Notice and Form → Wohnungsübergabe at Move-Out: Tenant Checklist → Shared flat and subletting: when can I sublet? → Schönheitsreparaturen: Must I Renovate When Moving Out? → Register your address after moving in Germany → Check your Mietvertrag before signing → Schimmel (Mould) in a Rented Flat: Your Rights → Eigenbedarfskündigung: What Tenants Can Do → Mietkaution: how much is allowed? → Leaving Your Lease Early: Nachmieter → How to Check Your Heizkostenabrechnung as a Tenant → Checking a Staffelmiete or Indexmiete → Modernisierung: tenant rights & rent increase → Taking In a Subtenant: Getting Permission → Can My Landlord Enter the Apartment? →
All tenant guides →
Early access

Early access.

Sign up for early access to the HausMaus app.

  • Early access, before HausMaus opens to everyone
  • For tenants and landlords

No spam. We'll be in touch in good time for launch. Unsubscribe anytime.