More space doesn't always add value. Sometimes it lowers it.

A large apartment almost always impresses on the showing.

But impressing isn't the same as selling well.

Past a certain point, size stops adding value — and starts costing.

"More space, higher price" works only as far as there are people who want that space.

A unit much larger than what its area calls for becomes a niche product. Fewer buyers can afford it. Fewer need it.

And what has few buyers sells more slowly — and often for less per square meter.

The buyer doesn't pay for space they won't use. A huge apartment, in an area where demand is for one- and two-bedrooms, competes with few and waits longer.

Here's a detail almost no one looks at: price per square meter.

In many buildings, a very large unit ends up selling for less per square meter than one of average size.

The total impresses.

The price per meter, often, tells another story.

That's why I'm skeptical of "it's huge, so it's worth more." Square footage adds value when there's demand for it. When there isn't, size stops being an asset and becomes a drag: fewer interested buyers, more months, more pressure to drop the price.

This isn't "big doesn't sell." For a large family, or someone who wants space and plans to stay, a spacious unit is exactly right. The problem is buying it believing that size makes it easier to resell. It's usually the opposite.

Before paying for extra space, it's worth asking who the buyer for this is the day you need to sell — and how many like them there are in this area.

Size impresses on the showing. In the resale, something else rules: how many people want it.