How to sell an apartment step by step

Martyna Gabryszewska · real estate agent, licence 16071 · updated: June 2026

A well-run apartment sale is no accident — it is an orderly process. Below we walk you through it step by step, exactly the way we run every transaction at MG Broker.

In short: selling an apartment takes 8 steps — valuation → preparation → photos → listing → viewings → negotiations → legal verification → notary. The whole process usually takes 2–4 months, and the most important factors are an accurate price and a strong presentation of the listing.

1. Valuation and pricing strategy

It all starts with the right price. Too high scares buyers off; too low means a loss. We set the value based on transaction and asking prices in the area — more in our guide on how to value an apartment.

2. Preparing the apartment (home staging)

A tidy, clean and neutrally furnished interior sells faster and for more. Small repairs, depersonalisation and good lighting make a huge difference — we have gathered them in our guide on how to prepare an apartment for sale.

3. A professional photo session

Photos are the first thing a buyer sees. A professional session (and often also a floor plan and a visualisation) determines how many enquiries you get. This is our standard with every sale listing.

4. Description and listing

We prepare an honest description and publish the listing where the buyers are — on the Otodom and OLX portals and in our own database. A good description answers questions before they are even asked.

5. Viewings and presentations

We organise and run viewings, fitting the timing to your schedule. We highlight the property's strengths and answer prospective buyers' questions.

6. Negotiations

We negotiate on your behalf — calmly and matter-of-factly. The goal is the best possible price with a genuine buyer who is ready to close.

7. Legal verification and documents

We check the land and mortgage register, any encumbrances and the legal status of the property, and we compile the documents. The most commonly required items are:

the land and mortgage register number,
the basis of acquisition (notarial deed, inheritance ruling or deed of gift),
a certificate of no arrears and of registered residents,
for a cooperative ownership right to the unit — a certificate from the housing cooperative,
with a mortgage — a certificate from the bank stating the payoff amount.

8. Closing at the notary

We arrange the appointment, coordinate the payment (including any mortgage payoff) and are present at the signing of the notarial deed. Once ownership is transferred, what remains is the settlement — see tax on the sale of an apartment.

How long does it take to sell an apartment?

With an accurate price and a strong presentation — usually between 2 and 4 months. In Mysłowice it averages around 3–4 months. Attractive listings in sought-after locations find a buyer faster.

The role of the real estate agency

We take over the entire process: valuation, marketing, viewings, negotiations, legal verification and coordination at the notary — also in Katowice, Mysłowice and Sosnowiec. Every transaction is handled personally by Martyna Gabryszewska.

How to value an apartment → How to prepare an apartment → Tax on the sale of an apartment →

FAQ

Frequently asked questions — selling an apartment

How long does it take to sell an apartment?

With a well-set price and professional presentation, selling an apartment usually takes between 2 and 4 months. In Mysłowice it averages around 3–4 months. The price and location matter most.

What documents are needed to sell an apartment?

The most commonly required items are: the land and mortgage register number, the basis of acquisition (notarial deed, inheritance ruling or deed of gift), a certificate of no arrears and of registered residents, and, for a cooperative ownership right, a certificate from the housing cooperative. We compile the documents together with the client.

Can I sell an apartment that has a mortgage on it?

Yes. The bank issues a certificate of the outstanding balance and the full payoff amount, and part of the price from the buyer goes directly toward repaying the loan; the remainder goes to the seller. We coordinate the whole process with the bank and the notary.

Is it better to sell on your own or with a real estate agency?

An agency takes over the valuation, marketing, viewings, negotiations and legal verification, plus coordination at the notary, which usually shortens the sale and increases transaction security. Selling on your own can be cheaper, but it takes time and know-how.

What is the most common mistake when selling an apartment?

Overpricing at the start. An overpriced listing loses the most interest in the first weeks, and later price cuts breed mistrust. That is why a sound valuation and good photos are key.

Planning to sell your apartment?

We will guide you through all 8 steps — from valuation to the notary. We reply within one business day.

Call: 511 514 673 Contact form