Mortgage underwriting: what it is and how it works

When you submit a mortgage application, the bank does not respond right away with a yes or a no. It first begins an internal process called underwriting, during which it gathers and verifies all the information needed to decide whether to grant you the loan and on what terms. Knowing this phase allows you to arrive with the right documents, realistic expectations about timing, and fewer surprises along the way.

What underwriting means

Underwriting is the set of checks the lender carries out on the applicant and on the property being financed. The goal is to assess two distinct aspects: the borrower's repayment capacity and the value of the asset that will be put up as collateral. Only after completing this analysis does the bank issue its mortgage offer, which may be accepted, modified in its terms, or declined.

The documents you will be asked for

The list varies from bank to bank, but in general you will need to provide:

• Personal documents: identity card, tax code, family status certificate, certificate of residence.
• Income documents: for employees, the most recent payslips and the CU tax form; for self-employed professionals and business owners, the most recent tax returns and financial statements.
• Property documents: the preliminary contract or signed purchase offer, the cadastral floor plan, the mortgage registry search, and the title deed where applicable.
• Bank statements from recent months, useful for showing the regularity of your income and the absence of heavy financial commitments.

Having these documents ready when you submit your application significantly reduces waiting times.

The creditworthiness assessment

The bank reviews your credit history through credit bureaus (such as CRIF or Experian), where any ongoing loans, late payments, or past defaults are recorded. It then analyses the instalment-to-income ratio: as a rule, the monthly mortgage instalment should not exceed a certain percentage of your net disposable income, although the exact threshold depends on each institution's policy. If you already have other active loans, these weigh on the overall calculation.

The property appraisal

Alongside the income analysis, the bank appoints an independent surveyor to estimate the property's market value. The appraisal result determines the value on which the LTV (Loan to Value) is calculated, that is, the ratio between the mortgage amount and the value of the asset. As a general rule, banks finance a percentage of the appraised value, rarely one hundred per cent. If you are buying a home in an area like Todi or inland Umbria, where the market features historic properties that often carry long-standing cadastral irregularities, it is wise to resolve any discrepancies before starting your application: an appraisal that uncovers technical issues can extend the timeline or complicate the outcome.

Underwriting times and costs

Timelines vary: some banks complete underwriting in a few weeks, others take longer, especially if the documentation is incomplete or the appraisal requires additional checks. As for costs, banks normally charge an underwriting fee, which may be a fixed amount or a percentage of the amount requested. This cost is due even if the application is unsuccessful, so it is worth finding out in advance before proceeding.

If you are considering a purchase in the Todi area and have doubts about the path to follow — from choosing the property to submitting your mortgage application — we are available for a no-obligation consultation. Knowing the territory helps avoid setbacks, and we have been working here for years.