HelvAddress — Swiss Address Validation & Normalization API

The Real Cost of Bad Address Data

Every failed delivery starts with a bad address

Incorrect addresses cost Swiss businesses thousands of CHF per year — in returns, manual corrections, and lost customers.

Generic APIs don't understand Switzerland

Google Maps and global address services were not built for Swiss specifics: dual postal codes, merged municipalities, 4-language formats, and cantons with their own conventions.

Pay-per-request pricing kills your budget

Volume-based billing from major providers turns every checkout into a variable cost. Impossible to forecast, impossible to scale confidently.

Building it yourself is a trap

Swiss postal rules are deceptively complex. Maintaining your own address database means constant updates, edge cases, and hidden engineering costs.

The Solution

The address API built exclusively for Switzerland

HelvAddress gives your application the same address quality that Swiss post offices use — via a single REST API call.

Fewer delivery failures

Validate every address at the point of entry. Catch errors before they become returns, complaints, or lost parcels.

Official federal data — always current

Sourced directly from the Federal Building Register (RegBL) and the swisstopo locality register. Not scraped. Not approximated.

Fixed monthly cost — zero surprises

One flat price per month. No per-request fees, no overage charges, no annual lock-in required. Budget with precision.

Integrate in under an hour

Standard REST API, OAuth 2.0 authentication, structured JSON responses. Full documentation included.

What You Get

Everything your application needs for Swiss addresses

A complete address intelligence layer for Swiss-focused products.

Address normalization

Send any free-text address and receive a fully structured, validated Swiss address in return — corrected spelling, standardized format, matched against official federal registers.

Discover how normalization works →

Confidence scoring

Every result includes a match confidence score. Flag uncertain addresses for manual review before they cause problems downstream.

Real-time autocomplete

Sub-20 ms address suggestions as users type. Reduce checkout abandonment and data entry errors at the source.

Official Swiss data sources

Federal Building Register (RegBL) and swisstopo locality register. The same authoritative data used by Swiss federal authorities.

Swiss hosting — data sovereignty

All data processed and stored exclusively in Switzerland. Compliant with the Swiss FADP and GDPR. No cross-border data transfers.

See the Swiss-only architecture →

Performance built in

Details lookup in under 10 ms. Autocomplete under 20 ms. Normalization under 50 ms. Designed for real-time, user-facing workloads.

Developer Experience

One endpoint. Clean results.

A single GET request returns ranked, structured Swiss address matches — no post-processing required.

Request

GET /api/addresses/autocomplete?query=gare%20lausanne&limit=5&threshold=0.5

Response

{
  "content": [
    {
      "id": 100001234,
      "streetName": "Avenue de la Gare",
      "houseNumber": "42",
      "zip4": 1003,
      "zipa": 0,
      "locality": "Lausanne",
      "municipality": "Lausanne",
      "canton": "VD",
      "score": 0.9965
    },
    {
      "id": 100001235,
      "streetName": "Avenue de la Gare",
      "houseNumber": "40",
      "zip4": 1003,
      "zipa": 0,
      "locality": "Lausanne",
      "municipality": "Lausanne",
      "canton": "VD",
      "score": 0.9912
    }
  ],
  "pageNumber": 0,
  "pageSize": 5,
  "totalElements": 2,
  "totalPages": 1
}

Full API reference and integration guides available in the Developer Portal

Pricing

Simple, fixed pricing

Pay a flat monthly fee. No metering, no overages, no surprises. Annual billing saves you two months.

Starter

CHF 39 / month · CHF 390 / year

address:autocomplete endpoint
address:get endpoint
1,000 queries / day
Essential address lookup scope

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Professional

CHF 129 / month · CHF 1,290 / year

Everything in the Starter scope
Query & get endpoints: address:query, canton:*, district:*, locality:*, municipality:*
10,000 queries / day
Swiss QR-bill validation: address:qrbill

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Business

CHF 349 / month · CHF 3,490 / year

Everything in the Professional scope
Single address normalization: address:normalize
Unlimited queries / day
Async batch normalization: address:job:normalize + address:job:read

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Enterprise

From CHF 1,500 / month

Dedicated instance
SLA & support contract
Typical clients: Bank, ERP, Real estate SaaS, Marketplace

Annual billing = 10 monthly payments — 2 months free — Contact us for Enterprise pricing

Why Businesses Choose HelvAddress

Swiss precision you can rely on

Every design decision prioritizes reliability, accuracy, and data sovereignty.

Hosted in Switzerland

100% Swiss infrastructure. Your data — and your customers' data — never leaves the country.

Official federal data

Sourced from Swiss federal registers. The most authoritative address dataset available for Switzerland.

FADP & GDPR compliant

Fully aligned with the Swiss Federal Act on Data Protection and European GDPR requirements.

Swiss-built, Swiss-focused

Clean Swiss address data, starting today

Create your account in minutes. No credit card required to start.

Get Started Now See Live Demo

Hosted in Switzerland • No credit card required. Cancel anytime.