Part II: Pre-Purchase Preparation
4. Understanding the Sales Contract
The sales contract (Verkaufsvertrag / Contrat de vente) is one of the most important documents in the entire buying process. Once notarised, it is legally binding and determines not only the purchase price, but also construction specifications, timelines, and your rights in case of delays or defects.
4.1 What’s Included in a Contract
A typical new-build apartment sales contract in Switzerland will cover:
- Identification of the buyer and seller (usually the developer as Bauherr)
- Description of the property: lot number, unit, floor, and PPE share (condominium ownership)
- Legal form and land registry details (e.g., Grundbuch / registre foncier)
- Purchase price and VAT treatment (if applicable)
- Payment schedule and conditions
- Reference to technical documents and plans
- Warranty and defect liability clauses
- Estimated delivery date or time window
- Conditions for withdrawal or cancellation
4.2 Understanding Technical Documents and Annexes
Annexes and attachments can include:
- Floor plans, building cross-sections, and site plans
- Material and equipment specifications (brands, models, finishes)
- PPE regulations (condominium ownership rules)
- Storage and parking assignments
- Energy efficiency certificates (e.g., Minergie, GEAK)
- Customisation budget or upgrade options (if applicable)
Be cautious of vague descriptions like high-quality kitchen or Swiss-standard bathroom without brand or model references. These are harder to enforce later.
4.3 Key Clauses to Watch Out For
- Delivery date wording – Avoid soft phrases like targeted completion or expected delivery, which do not legally bind the developer.
- Change clauses – Some contracts let developers substitute materials or layouts; ensure changes require your consent.
- Liability exclusions – Beware of clauses removing responsibility if a subcontractor goes bankrupt.
- Penalty clauses – Rare in Switzerland, but sometimes offered for serious delays — check if they are meaningful.
4.4 Payment Schedule vs. Construction Milestones
Payments should correspond to visible, verifiable milestones, such as:
- Completion of foundation and structural shell
- Roof and windows installed (weatherproof stage)
- Interior work completion (flooring, kitchen, plumbing)
- Final inspection and acceptance (Abnahme / réception)
In some French-speaking cantons, payment schedules are legally regulated for off-plan purchases (VEFA). In Zurich and other cantons, developers may request full payment only at handover — verify what’s required early.
Avoid schedules requiring large sums far in advance of actual progress.
4.5 Conditions for Withdrawal or Cancellation
Key aspects to review:
- Conditions under which you can withdraw (e.g. failure to secure financing, construction delays)
- Whether the deposit is refundable, and under what circumstances
- Whether the deposit is held in escrow or transferred directly to the developer
- Remedies if the developer defaults or declares bankruptcy
- Applicable legal process: mediation, arbitration, or court
Always clarify where your deposit is held (escrow vs. developer’s account). Escrow adds a layer of protection if the developer faces financial trouble.
4.6 Contract Language and Translation Requirements
Notarial contracts must be drafted in an official language of the canton (German, French, or Italian). If you are not fluent, you are entitled to have a sworn translator present during the signing. This ensures you fully understand your obligations before committing.
You can use the Huusli Sales Contract Checker to analyse your draft contract and flag potential issues — such as vague material specs, liability gaps, or payment schedules that heavily favor the developer. It’s a good way to prepare questions before meeting the notary.