Why compare interest with rent rather than the whole payment?

Because part of a mortgage payment comes back to you as equity, while all of the rent is gone. Setting the full payment against rent flatters renting; setting the interest against it is the fairer pairing.

Are these asking prices?

No. Rents come from deposits lodged with INCASÒL and sale prices from registered transactions, so both are what people actually signed, not what was advertised.

Which neighbourhoods are missing?

Any barri without both a rent and a sale figure for the same quarter. Pairing figures from different quarters would make the comparison meaningless, so those are left out rather than patched.

Rent or buy, in your neighbourhood

Comparing a rent to a mortgage is easy to do badly. This uses the registered rent and the registered sale price for the same barri and the same quarter — 68 neighbourhoods, Q1 2026 — and shows what each option costs in cash. Gross yields run from 8.30% in la Trinitat Vella down to 2.97% in Sarrià, so which side is cheaper is very much a question about where.

Neighbourhood

Size (m²)

Deposit (%)

Of the purchase price

Mortgage rate (%)

Term (years)

Purchase costs (%)

Transfer tax, notary, registry and fees. Check the current rate — it varies by price and buyer.

Why there is no break-even year

A break-even date only exists once you assume how fast prices will rise, and that assumption decides the answer. This site publishes what has been registered, so instead of inventing a growth rate it shows the numbers you can actually check: the cash needed up front, the monthly payment, and how much of it is interest.

Widest and narrowest gap

la Trinitat Vella: €15.59 · €2,255
Sarrià: €19.51 · €7,873

→ Every barri ranked by yield → Is my rent above average?

Questions

Why compare interest with rent rather than the whole payment?: Because part of a mortgage payment comes back to you as equity, while all of the rent is gone. Setting the full payment against rent flatters renting; setting the interest against it is the fairer pairing.
Are these asking prices?: No. Rents come from deposits lodged with INCASÒL and sale prices from registered transactions, so both are what people actually signed, not what was advertised.
Which neighbourhoods are missing?: Any barri without both a rent and a sale figure for the same quarter. Pairing figures from different quarters would make the comparison meaningless, so those are left out rather than patched.