5 Mistakes That Lower Your Property's Selling Price

Selling a property is not complicated. Selling at the right price, within a reasonable timeframe, and without surprises — that is.

After more than one hundred transactions in Madrid’s prime areas, these are the mistakes that cost homeowners the most money.

1. Setting an emotional price, not a market price

This is the most expensive and the most common mistake. The owner sets a price based on what they “feel” the property is worth, not on what the market is willing to pay.

“I paid this much,” “I invested this much in the renovation,” “the neighbour upstairs sold for this much” — none of these arguments determine the real price. The price is determined by what a qualified buyer is willing to pay today, compared with the alternatives available to them.

What it costs: An overpriced property — 10-15% above market — receives no offers in the first 30-45 days (which are the most critical). When the owner lowers the price weeks later, the property is already “burned” — buyers who saw it dismiss it, and new ones see a property that has been sitting on the market for weeks and negotiate downward.

Result: the owner ends up selling 8-12% below what they would have achieved with the right price from day one.

The solution: A professional valuation based on actual comparable transactions, not on listing prices from property portals (which are inflated by 15-20% on average).

2. Not preparing the property for sale

We are not talking about a full renovation. We are talking about presenting the property so that the buyer can picture themselves living in it.

A property with dated furniture, peeling walls, odours, and clutter creates a first impression that no discount can compensate for. The high-end buyer expects a minimum standard of presentation.

What it costs: Basic home staging can cost between €2,000 and €5,000. Not doing it can cost you between €20,000 and €50,000 on the final price. It is the investment with the highest return in the entire sales process.

The basics:

• Depersonalise (remove family photos, very personal objects)
• Deep clean (including repainting if the walls are deteriorated)
• Fix visible defects (taps, switches, doors)
• Good lighting (all bulbs working, blinds open)
• No odours (kitchen, pets, damp)

3. Photos taken with a mobile phone

In the high-end segment, professional photography is not a luxury — it is the bare minimum. A buyer spending €800,000 is not going to book a viewing for a property whose photos look like they were taken with a 2015 smartphone.

What it costs: Professional real estate photography costs between €300 and €600 for a 150-250 m² apartment. Skipping it drastically reduces the number of qualified viewings, which lengthens the time to sale and pushes the price downward.

What makes the difference:

• Photography with a professional wide-angle lens
• Light and colour retouching
• Floor plans of the property
• For premium properties: video or virtual tour

4. Not screening viewings

Every unqualified viewing is wasted time, inconvenience for the owner, and wear on the process. When a property receives 20 viewings and zero offers, something is wrong — and usually it is that the viewings were not screened.

What it costs: Weeks or months of process with no results, leading the owner to believe their property “won’t sell” when the problem is not the property — it is the quality of the buyers visiting it.

How to screen:

• Verify financial capacity before the viewing (bank pre-approval or proof of funds)
• Understand the buyer’s real motivation (are they actively searching or just browsing?)
• Confirm that the property fits what they are looking for (area, size, budget)

A good advisor does not measure their work by the number of viewings. They measure it by the ratio of viewings that convert into offers.

5. Negotiating without a strategy

Negotiation does not begin when an offer arrives. It begins when you decide the asking price.

The most common mistake: accepting the first offer out of fear of losing it, or rejecting it out of pride without making a counteroffer. Both positions cost money.

What it costs: A poorly managed negotiation can mean between 3% and 7% of the final price. On a €1M property, that is between €30,000 and €70,000.

Principles of good negotiation:

• Know the real market (comparables, stock, demand) to argue with data
• Be clear about your minimum acceptable price before receiving offers
• Never negotiate from urgency
• Let a professional handle the negotiation — emotional distance is an advantage

The common denominator

All five mistakes share one thing: they are avoided with professional advice from day one. Not when you have been listed for three months with no offers. Not when you have already turned down two reasonable offers. From day one.

The difference between a well-executed sale and an improvised one is not luck. It is preparation, strategy, and professionalism.