Why should I work with a broker for my mortgage?

Published on: June 9, 2025 | Reading time: 10 minutes

A mortgage is, for most people, the largest debt of their lives, and it stays with them for decades. A mere quarter of a percentage point less interest on a mortgage of eight hundred thousand francs adds up to around twenty thousand francs over ten years, a sum you have to work hard for elsewhere. And yet many sign with the institution where they are already a customer, their own house bank, and barely compare. This is precisely where a broker comes in. What such a partnership actually delivers, and for whom it pays off, comes down to a handful of points.

A single bank shows only part of the picture

Anyone who asks their bank for a mortgage receives the offer of that one bank. The market, however, is considerably larger. Alongside the cantonal and big banks, insurers, pension funds and institutional investors also grant mortgages, and each of these lenders follows its own policy. One is currently chasing volume and quotes sharply, another is reticent, a third prefers certain properties or income profiles over others. For one and the same borrower, the conditions can differ noticeably from lender to lender. A broker approaches not one but many, and so makes visible what otherwise stays hidden, namely whether an offer is genuinely good or merely familiar.

Better conditions, because someone negotiates

The interest rate a bank displays in its window is rarely the best it is willing to grant. Room to move arises through competition, and that is exactly what a broker brings to the table. They know the current margins, know where there is space to negotiate, and arrive with a certain volume that individual clients cannot offer. The moment a lender senses that it is competing, the price begins to move. Over a long term even a small reduction becomes substantial, and it is this effect that makes the collaboration worthwhile for many in the first place.

Time, paperwork and nerves

A mortgage has to be documented. Salary statements, tax papers, details on equity and pension assets, and on top of that every document relating to the property. Anyone who approaches several lenders on their own assembles these papers again and again, answers the same questions repeatedly and, in the end, compares offers that are structured in barely comparable ways. A broker bundles all of this. They prepare the dossier once and cleanly, gather the offers and lay them side by side so that the differences stand out clearly. What costs an individual weeks of back and forth becomes a manageable decision.

The right structure is more than the rate

The interest rate is the most conspicuous figure, but not the only one that counts. Just as important is how a financing arrangement is built. Should the mortgage be split into several tranches with staggered terms, so that not everything has to be renewed at once and perhaps at the least favourable moment? Does a fixed rate mortgage with its planning certainty suit better, or a money market mortgage whose rate tracks the SARON on an ongoing basis? Should repayment be direct, or indirect via pillar 3a, which brings tax advantages? And how can affordability, which is assessed with a notional interest rate of around five percent, be presented as comfortably as possible? These questions determine cost and flexibility for years to come. An experienced broker thinks them through as a whole rather than simply naming a number.

Especially valuable in special situations

For the salaried employee with a secure income and a standard apartment, a mortgage is usually arranged quickly. It becomes tricky with anything that departs from the template. The self employed whose income fluctuates, newly founded companies, borrowers shortly before retirement, a high share of borrowing against the property or unusual objects are judged very differently by the various lenders. Here a rejection from one bank can feel like a dead end, while another provider finances the very same project without difficulty. A broker knows which lender suits which profile, and so spares the client many a disappointment.

The same holds for a moment that is often underestimated, the renewal. Many continue their expiring mortgage with their existing bank out of convenience and overpay year after year. Yet the refinancing is the ideal moment to test the whole market once again. Anyone who keeps an eye on the notice periods and compares in good time negotiates from a comfortable position.

What does the brokerage cost?

The most common question first. In many cases the broker is compensated by the lender, so that no direct costs arise for the client. Others work for a fee. Both models can be fair, and what matters is transparency. Ask openly how your counterpart is paid, because only then can you judge how independent the advice really is. In the end, what counts is not the commission but the total burden over the term, and against a noticeably lower rate a brokerage fee usually weighs little.

What to look for when choosing

Broker is not a protected title, and not everyone compares the whole market. Some are tied to a single provider and, in the end, always recommend the same house. So ask how many lenders are actually approached, whether the advice is documented and where your counterpart earns its money. A reputable partner sets out its recommendation in a way you can follow, points to alternatives and does not push. Where the impression arises that only a single product is meant to be sold, caution is in order.

How HYPOHAUS supports you

This is precisely the work HYPOHAUS takes on. As an independent broker, we compare more than fifty lenders for you, from the regionally rooted institution to the nationally active provider, and draw from that competition the solution that fits you. We prepare your mortgage dossier, conduct the negotiations with banks, insurers and pension funds, and present the offers in a way that lets you weigh them side by side at your leisure. The decision always remains yours.

Behind HYPOHAUS stands a team of specialists with many years of experience in the banking industry, who know the Swiss mortgage market from their own practice. Instead of a standard product, we work out your personal mortgage profile together with you and align the model, the term and the structure with your situation, your financial room to manoeuvre and your appetite for risk. Whether you are financing for the first time or refinancing an expiring mortgage, we accompany you from the first conversation to the signature.

And the question of cost? Our service is free of charge and without obligation for you. HYPOHAUS is compensated by the financing partners, not by you. Those who compare their rates through us save, on average, around two thousand five hundred francs a year, money that would otherwise quietly remain with the bank.

Conclusion

A mortgage runs for decades, and the few hours that a careful comparison costs pay off many times over across that span. The real question, therefore, is rarely whether to compare, but how thoroughly. Leave the negotiation to the specialists, and in the end it will not be familiarity that sets your interest rate, but the best available offer. Request a consultation from HYPOHAUS without obligation and find out what your financing should really cost.