Sell your property privately or hire a professional?

What the decision really hinges on

Anyone selling a flat or a house soon asks whether an agent's commission is worth paying. The honest answer depends less on the property than on three factors: how well you know the local market, how much time you really have over the coming months, and how complete your documents already are.

Criterion	Private sale	Professional marketing
Time	Listing, enquiries, viewings and follow-ups are all on you	Coordinated by the agent, you decide at the key points
Pricing	Your own market view, possibly backed by an online estimate	Valuation and positioning against comparable properties
Reach	Your own listings and personal network	Portals, a database of active buyers and targeted outreach
Negotiation	Direct and often emotional	Led by a third party with a clear line
Costs	Listings, photos, documents, possibly a valuation	Fee as agreed in the contract, usually success-based

What matters is not whether you save the commission, but what is left once all costs, taxes and your own effort are deducted.

What a private sale actually involves

Many owners underestimate the workload. A sale is not a single listing but a chain of tasks that stretches over weeks or months.

Gather the documents: a current land register extract, floor plans, building specifications, the building insurance policy, details of renovations and service charges; for condominiums also the regulations, the renewal fund balance and minutes of recent owners' meetings.
Set a price you can justify to prospective buyers.
Create a listing with good photos and accurate floor areas.
Answer enquiries promptly and pre-screen prospects.
Prepare and hold viewings, often in the evening or on Saturdays.
Check buyers' proof of financing.
Negotiate, handle any reservation agreement and prepare the purchase contract with the notary.

In Switzerland, a contract for the sale of real estate must be publicly notarised (Art. 216 of the Code of Obligations). The notary drafts the deed, but you still have to agree on points such as the handover date, warranty, payment terms and any furniture included with the buyer beforehand.

Plan realistically

Expect several hours a week for the entire marketing period. If you have a demanding job or live far from the property, factor that honestly into your decision.

Valuation and asking price: the most delicate point

The first published price shapes how the market perceives a property. Set it too high and enquiries dry up, the listing stays online for weeks and starts to look stale. Buyers notice every later price cut and use it as leverage. Set it too low and you give away money you will hardly recover.

Online estimates based on statistical models give a first order of magnitude, but they capture condition, views, noise or an awkward layout only to a limited extent. A valuation by an independent professional costs something, yet it provides a reasoned figure that also helps in negotiations, whether you later sell yourself or hire an agent.

Warning signs that the price is off

Hardly any enquiries in the first weeks despite a good presentation.
Plenty of viewings but no offers.
Feedback keeps mentioning the same shortcomings or comparable properties.

Common mistakes when selling yourself

Most problems stem less from a lack of expertise than from poor preparation and structure.

The price reflects past investments or a wish figure rather than comparable sales.
Floor areas are imprecise or contradict the plans.
Documents are only supplied once buyers ask for them, which erodes trust.
Viewings happen spontaneously, without prepared answers on service charges, heating or renovation needs.
Verbal promises to several prospects lead to disputes.
The buyer's financing is not checked and the deal collapses shortly before notarisation.
Tax consequences are only calculated after the sale.

Clarify taxes early

Selling real estate usually triggers a cantonal real estate gains tax, and in some cantons a property transfer tax as well. Rates, deductions and deferral options, for instance when you reinvest in a new owner-occupied home, are set by each canton and can change. Have the figures checked by a tax adviser or the cantonal tax office before you sell.

Alone, partial mandate or agent: how to decide

A private sale tends to suit you if you know the local market and comparable sales well, the property is mainstream and demand is predictable, the documents are complete, and you have enough time and composure for negotiations.

Professional marketing tends to pay off for unusual properties, a difficult market, time pressure, or for heirs and separating couples, where a neutral third party can defuse tension. In between there are partial mandates: you commission only the valuation, the sales documentation or the contract preparation and handle the rest yourself.

What to check in an agency contract

How high is the fee, and is it due only on success or also if you withdraw?
Which services are included, and who conducts the viewings?
Is there an exclusivity clause, a minimum term or a cost reimbursement on termination?
Who pays for listings, photos and documents?
Is the fee also due if you find a buyer yourself?
What references does the agent have in your region and property category?

Frequently asked questions

Which properties are best suited to a private sale?

Standard flats and single-family homes in sought-after locations, where the price can be read easily from comparable properties. The more unusual the location, condition or use, the more a sound valuation and targeted marketing matter.

Does the commission pay for itself?

Only a case-by-case comparison can tell. Compare the expected net proceeds of both options: if professional pricing and negotiation lead to a higher price or a safer closing, the fee may be covered. There is no guarantee of that.

How early should I start preparing?

As soon as a sale is on the horizon, ideally a few months before the first listing. Valuation, documents and tax questions are easier to settle without time pressure than during ongoing viewings.

Can I terminate an agency contract?

Under Swiss law, brokerage contracts can in principle be terminated at any time. However, contracts may contain cost reimbursements or clauses that remain effective after termination. Read these points carefully before signing and have them reviewed if in doubt.

Do I need a lawyer for a private sale?

Not necessarily, as the purchase contract is publicly notarised. With special circumstances such as easements, known defects, rights of residence or several owners, legal advice before notarisation is sensible.

If you assess market value, time requirements and documents soberly, you can usually decide clearly whether a private sale is enough or whether professional support better protects your net proceeds.