ZüriKey
ZRHRental dossier engine · Zürich

The dossier that wins you the apartment.

Profile, documents, affordability score, a flawless German cover letter and a print-ready PDF — assembled into the one application Zürich property managers actually want to read. Built for expats.

Free to build
Data stays on your device
ZüriKey
No. 2026-0413
MR

Marco Rossi

Software Engineer · Permit B · Italy

Application strengthSTRONG

88 / 100 · Rent ceiling CHF 3'150/mo at 33% of income

Passport & permit B
3× payslips
Betreibungsauszug
Employment contract
German cover letter

„Sehr geehrte Damen und Herren, mit grossem Interesse bewerbe ich mich um die 3.5-Zimmer-Wohnung an der Seestrasse…“

Ready to sendPDF · DE letter · e-mail
BewerbungsdossierBetreibungsauszugWohnungsbewerbungMietzinsHausratversicherungMietkautionVerwaltungPrivathaftpflichtSelbstauskunftReferenzschreibenBewerbungsdossierBetreibungsauszugWohnungsbewerbungMietzinsHausratversicherungMietkautionVerwaltungPrivathaftpflichtSelbstauskunftReferenzschreiben

< 0.1%

Vacancy rate, city of Zürich

100+

Applications per popular listing

Of income — the Swiss rent rule

3 mo.

Max age of a Betreibungsauszug

01—06How it works

Six steps to a dossier that stands out.

No templates to wrestle, no German to second-guess. The engine turns scattered paperwork into a single, confident application.

Start building — it's free
  • 01

    Build your profile

    Who you are, your job, your income, your permit and your household — guided, one field at a time.

  • 02

    Gather your documents

    Tick off your ID, payslips, employment contract and Betreibungsauszug. We flag exactly what's still missing.

  • 03

    Set your preferences

    Where in Zürich, how many rooms, your budget and move-in date — so the dossier speaks to the right flat.

  • 04

    Get your affordability score

    See your application through a landlord's eyes: a strength rating and the exact rent ceiling you qualify for.

  • 05

    Generate the German letter

    A formal, flawless Bewerbungsschreiben written in proper Swiss German — tailored to your story.

  • 06

    Send it in one move

    Export a print-ready PDF dossier and a ready-to-paste e-mail to the Verwaltung. Done.

The dossier engine

Everything that makes a Swiss landlord say yes.

Each feature is built around one question a Verwaltung silently asks: can we trust this tenant?

Affordability score

See your file the way a property manager does — a strength rating and the precise monthly rent ceiling you qualify for under the one-third rule.

German cover-letter generator

A formal Bewerbungsschreiben in proper Swiss German, tailored to your profile and the flat — the part most expats can't write themselves.

„…verfüge ich über ein unbefristetes Arbeitsverhältnis und ein geregeltes Einkommen.“

One-click PDF dossier

A clean, indexed, unmistakably Swiss PDF — readable in 30 seconds.

Application tracker

Every flat you apply to: sent, viewing, shortlisted, accepted.

Document alerts

Your Betreibungsauszug expires in 3 months. We remind you before it does.

Co-tenant mode

Couples and flatshares: combine two incomes into one stronger file.

Landlord-ready format

Structured exactly the way Zürich Verwaltungen expect — same order, same fields, every time. No guessing what to attach.

Private by design

Your IDs, payslips and debt-collection extract stay in your browser. Nothing is uploaded to a server until you decide to send it.

Pricing

Build for free. Pay only when you're ready to send.

No subscription. You assemble the whole dossier and see your score at no cost — you only pay, once, to export and send the finished file.

Build

Free

The full engine. Build your entire dossier and see your score — no card needed.

  • Guided multi-step builder
  • Affordability score & rent ceiling
  • German cover letter preview
  • Watermarked dossier preview
Popular

Unlock

CHF 199one-time

Everything you need to send a winning application today.

  • Print-ready PDF dossier (no watermark)
  • Final German cover letter
  • Ready-to-paste Verwaltung e-mail
  • Application tracker & document alerts

Premium

CHF 490one-time

A relocation expert refines your file by hand before you send it.

  • Everything in Unlock
  • Human-written, personalised DE letter
  • Profile & wording optimisation
  • Priority turnaround

Concierge

from CHF 2'500+ success fee

We search, view and apply on your behalf — all the way to signing.

  • Off-market & Hauswart network
  • Viewings + 4K video on your behalf
  • Applications sent for you
  • Support until the contract is signed

Prices in Swiss francs · One-time, per dossier · Concierge billed after a free intro call

Privacy & trust

You're handing over your most sensitive papers. We treat them that way.

IDs, payslips, a debt-collection extract — this is exactly the data Swiss law protects most strictly. Privacy isn't a footer here; it's the architecture.

Read the full privacy approach

On-device by default

Your documents are read in your browser to build the dossier. Nothing is uploaded to a server until you choose to send.

Encrypted when sent

Any data you do transmit travels over encrypted connections, handled under appropriate technical safeguards.

Delete in one click

It's your data. Wipe everything from this device instantly, any time — no account, no trace left behind.

Swiss data law (nFADP)

Built around the revised Federal Act on Data Protection in force since 1 September 2023.

FAQ

Straight answers.

The questions every expat asks before trusting a service with their paperwork.

Do you guarantee I'll get the apartment?

No one honestly can — the final call is the landlord's. What we guarantee is that your application is complete, correct, affordable on paper and effortless to read, which is exactly what gets you onto the shortlist instead of the reject pile.

What documents do I actually need?

Typically a passport or ID, your residence permit, your last three payslips, your employment contract, a recent Betreibungsauszug (debt-collection extract, ideally under three months old) and a reference from a previous landlord. The builder tells you exactly what's required and flags what's missing.

Is the German cover letter genuinely good?

Yes. It's written in formal, correct Swiss-standard German, structured the way property managers expect, and tailored to your profile and the flat. On Premium, a human reviews and personalises it before you send.

What happens to my personal data?

Your documents are processed in your browser to assemble the dossier — nothing is uploaded until you choose to send. You can delete everything from your device in one click. We build around the revised Swiss Federal Act on Data Protection (nFADP).

Can my partner and I apply together?

Yes. Co-tenant mode combines two applicants and two incomes into a single, stronger file — ideal for couples and flatshares, since two salaries lift your affordability score.

How does payment work?

Building your dossier and seeing your score is completely free. You only pay once — a one-time fee — when you're ready to export the print-ready PDF and send it. No subscription.

Which areas do you cover?

We're focused on the city of Zürich and Winterthur first, with the wider Greater Zürich area (including Zug) supported. The dossier itself works for any Swiss application.

Your next viewing is coming

Be the easy yes.

Build a dossier so clear and complete that choosing you is the simplest decision the landlord makes all week. Free to start.