Mortgage application: the complete document checklist

A complete and well-structured mortgage application is the key to quickly obtaining the best financing conditions. Banks evaluate your solvency, repayment capacity, and the quality of the property. Every missing document delays the process. Here is the exhaustive checklist to prepare your application.

Documents relating to your personal situation

Identity and civil status

• Valid identity document (ID card or passport)
• Residence permit (for foreign nationals: B, C, or L permit)
• Civil status attestation or family book
• Marriage contract or registered partnership agreement (if applicable)
• Divorce decree (if applicable)

Employment situation - Employees

• Last 3 salary slips (or last 12 if income is variable)
• Salary certificate from the previous year
• Employment contract (stating base salary, bonus, employment rate)
• Employer attestation if recent position change
• Confirmation that the probation period is completed

Employment situation - Self-employed

• Financial statements and profit & loss accounts for the last 3 fiscal years
• Tax returns for the last 3 years with tax assessments
• Commercial register extract
• Business description and outlook
• AHV/AVS attestation

Documents relating to your assets

Savings and investments

• Statements for all bank accounts (last 3 months)
• Securities portfolio statements (latest statement)
• Surrender value of life insurance policies (pillar 3b)
• Proof of other assets (property, vehicles of value)

Pension provision

• LPP pension certificate (most recent pension statement) showing retirement savings, amount available for EPL withdrawal, and insured benefits
• Pillar 3a statement(s) (statement for each account or policy)
• Vested benefits statement (if applicable)

Other equity sources

• Gift attestation signed by the donor, confirming the irrevocable nature
• Proof of funds origin (AMLA compliance)
• Family loan agreement (if applicable)

Documents relating to your liabilities

• Latest tax return with tax assessment
• Current leasing contracts (vehicle, equipment)
• Current consumer loans
• Alimony payments (court order)
• Current rent (to calculate savings capacity)
• Co-ownership charges for current property (if already an owner)

Documents relating to the property

For all property types

• Property description: documentation from seller or agency
• Property plans: floor plans with surface areas
• Land registry extract (recent, less than 3 months old)
• Cadastral plan and site plan
• Photos of the property (interior and exterior)
• CECB energy certificate (if available)
• Year of construction and renovation history

For a condominium (PPE)

• Management and usage regulations
• Minutes of the last 2-3 general assemblies
• Co-ownership charge breakdown
• Renovation fund balance
• Share quota allocation plan
• Planned or voted works

For new construction

• Building permit
• Architect's plans and construction specifications
• Detailed quote or general contractor agreement
• Construction schedule with payment milestones
• Construction insurance

Summary table by priority

Tips for an effective application

Prepare a digital file

Most banks now accept applications in electronic form. Scan all your documents as PDFs, name files clearly (e.g. "Salary_slip_January_2026.pdf"), and organise them into thematic folders.

Anticipate additional requests

It is better to provide too many documents than too few. An ultra-complete file from the outset reduces back-and-forth and speeds up processing. Banks appreciate well-prepared applications, and this can even positively influence the conditions offered.

Request a pre-approval

Even before finding a property, you can submit your financial file to obtain a confirmation of financing in principle. This pre-approval tells you the maximum amount the bank is willing to lend and strengthens your credibility with sellers.

Submit to multiple institutions

Prepare your file once and send it to 3 to 5 different institutions. Comparing offers is the best way to obtain optimal conditions. Rate differences, even small ones (0.1% to 0.2%), represent thousands of francs over the mortgage term.

Common mistakes to avoid

• Outdated documents: provide recent statements and attestations (generally less than 3 months old)
• Inconsistencies: amounts must match across different documents (salary on payslip vs tax return)
• Omissions: declare all your debts, even small loans. The bank will discover them during verification and an omission can compromise trust
• Illegible documents: ensure scans are clear and complete
• Missing spouse: for a married couple, the bank needs documents from both spouses