Untervermietung
Complete rental management for sublandlords

Subletting. Without paperwork.

Done with spreadsheets, printed protocols, forgotten meter readings and move-out disputes. Fully digital – from first tenant to final billing.

Start for free
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★★★★★

20 min instead of 1 hr – Handover with protocol & signature

GDPR compliant
EU hosting
No installation
Start free
Untervermietung mobile app: apartment overview with tenant, cold rent and furniture surcharge
5-step handover wizard
Digital signature
Automatic utility billing

5

steps to a complete protocol

20 min

average handover time

100%

digital – no paper needed

€0

cost to get started

How a tenancy works

From first invitation to final billing – everything in one app, no switching tools.

01

Invite tenant

Enter email, share link. Tenant registers for free – you see instantly when they've accepted.

Invitation · 7 days valid · No app needed
02

Handover in 20 min

Wizard starts: furniture, photos, meter readings, keys, digital signature. Both parties sign on the same device – or tenant signs later from home.

5 steps · Legally valid · PDF automatic
03

Share documents

Rental agreement, protocol PDF and billing statements are automatically in the app. Tenant sees everything anytime – no more WhatsApp chaos.

PDF · Automatic · Visible to tenant
04

Billing at the push of a button

Meter readings from the handover flow in directly. Electricity, gas, water – pro-rated, with price periods. Refund or surcharge calculated automatically.

No double entry · Forecast · History

Everything you need

No unnecessary features. No hidden costs. No overhead.

Protocols

Guided handover protocols

The 5-step wizard guides you through move-in and move-out. Furniture, meter readings, keys and photos in one place – nothing missed.

  • Move-in & move-out
  • Furniture with condition rating
  • Photos directly in the protocol
  • Automatic PDF export
Utilities

Meter readings & billing

Meter readings from the protocol flow directly into billing – no double entry. Multi-period pricing for electricity, gas, water. Refund or surcharge calculated automatically.

  • Auto-imported from protocol
  • Multi-period pricing model
  • Refund / surcharge calculation
  • Forecast to end of tenancy
Signatures

Digital signatures from both parties

Landlord signs first, then the tenant – even later from their own device. Both signatures with timestamps. PDF saved automatically.

  • Landlord signs on-site
  • Tenant countersigns digitally
  • Timestamps for both signatures
  • Automatic PDF export
Documents

All documents in one place

Upload and share rental agreements, protocols and utility bills. Tenants can view and download all relevant documents at any time.

  • PDF, Word, JPG, PNG
  • Categories: Contract, Protocol, Other
  • Viewable by tenant
  • Secure cloud storage
Invitation

Invite tenants via link

Enter email address, copy invitation link, done. The tenant registers for free and immediately gets access to all relevant documents and the protocol.

  • Link valid 7 days
  • Free registration for tenant
  • Immediate document access
  • No app required
Templates

Templates

Sublease agreement, handover protocol, termination letter and more – as a starting point for your own documents. Accessible directly, without external searching.

  • Sublease agreement
  • Handover protocol
  • Termination letter
  • Utility billing statement

For landlords and tenants

Both sides get exactly the features they need – nothing more, nothing less.

Landlord

Manage everything, forget nothing.

  • Create & manage apartments
  • Invite tenants via link
  • Start protocol wizard
  • Document furniture, meters & keys
  • Take photos on-site
  • Sign digitally
  • Upload & share documents
  • Configure & calculate utilities
  • Save PDF protocol automatically
  • Use template library
Start as Landlord

Tenant

Simple and transparent.

  • Accept invitation link
  • View & review protocol
  • Countersign digitally
  • Download all documents
  • View meter readings
  • Track utility billing
  • Access all documents anytime
Access via invitation link · Free

What landlords say

★★★★★
"Move-in used to take me an hour – paper, pen, forgot something again. Now we're done in 20 minutes and both have the signed PDF on our phones."
T

Thomas K.

Rents 2 apartments · Munich

★★★★★
"The meter reading feature alone is worth gold. I used to have values on some piece of paper. Now I see the trend at a glance and the billing almost calculates itself."
S

Sarah M.

Sublandlord · Berlin

★★★★★
"When my last tenant moved out there wasn't a single argument. We opened the move-in protocol, compared, done. Everything was documented, all photos were there."
M

Mehmet A.

Main tenant · Hamburg

Simple pricing

No fine print. No hidden subscription.

Free

€0 / forever

For a risk-free start

  • 1 apartment & 1 tenancy
  • Dashboard & tenant management
  • Tenant invitation
Start for free
Most popular

Pro

€3 / per month

or €20 / per year

Save 45%

Everything you need for professional rental management

  • Unlimited apartments & tenancies
  • Handover protocols (move-in & move-out)
  • Digital signature & photo upload
  • Document management & PDF export
  • Utility billing
  • Consumption charts & forecast
  • Contract & document templates
Start Pro

Frequently asked questions

Is the digital protocol legally recognized?

A handover protocol with digital signatures from both parties is legally recognized in Germany and serves as documentary evidence. In disputes about the apartment's condition, a complete, signed protocol with photos is the strongest piece of evidence.

Does my tenant need to install the app?

No – there's nothing to install. The app runs as a Progressive Web App directly in the browser. Your tenant opens the invitation link, registers for free in under a minute, and can start immediately.

What if the tenant can't sign on-site?

No problem. The landlord signs first on-site, the tenant can provide their digital signature later from their own device – for example the next day from home.

Where is my data stored?

All data is stored on servers in the EU (Frankfurt). We are fully GDPR compliant and do not share data with third parties. Photos and documents are encrypted in Supabase Storage.

Can I edit protocols after the fact?

As long as the tenant hasn't signed yet, the landlord can edit all sections (furniture, meter readings, keys, notes). After both parties have signed, the protocol is locked – which is intentional for legal reasons.

How are meter readings from the protocol used for utility billing?

Meter readings captured in the protocol automatically flow into utility management. You see consumption charts, costs per period and a forecast to the end of tenancy – without double data entry.

Ready for your first stress-free handover?

Start free – no risk, no credit card, no deadline.

Start for free

Free forever · No app download · Runs in the browser