Rocío Baselga pays €950 a month for a typical four-bedroom flat in Bilbao. Rather than renting it as a whole, she furnishes each room and leases them individually for about €400 each. When all four are occupied, the property brings in €1,600 monthly, leaving a gross spread of €650 before expenses. Once utilities, maintenance and other costs are deducted, Baselga targets a minimum net profit of €410 per flat.
Her approach, known as rent-to-rent, requires an upfront investment of roughly €3,000 to furnish and prepare each apartment. Baselga says she usually recovers this outlay within six or seven months, though occupancy and unexpected costs can affect the payback period. At the stated €410 monthly net target, recovering €3,000 takes about 7.3 months. The shorter 4.6-month calculation assumes she keeps the entire €650 spread before operating costs. She currently manages 75 rooms under this model, alongside five traditional rental properties.
Calculating the Margin
The numbers are straightforward, but the model requires discipline. Four rooms at €400 each bring in €1,600 a month. Subtracting the €950 rent paid to the owner leaves €650, not net profit: utilities, repairs, cleaning, furnishing replacement, taxes, tenant turnover and management costs all cut into that spread. If one €400 room is vacant, receipts fall to €1,200 and the difference before other costs shrinks to €250. Baselga aims to clear at least €410 per month, but that target depends on occupancy and on which recurring and irregular expenses are included.
Choosing the Right Properties
Baselga focuses on working-class neighborhoods, looking for flats with three bedrooms and a separate living room that can be converted into a fourth rentable space. She favors buildings without elevators and properties needing only basic upgrades. Major renovations, especially to bathrooms, can quickly eat into profits and delay returns.
Her offer to landlords is simple: she handles daily management, equips the flat and takes responsibility for tenants. For renters, the appeal is a move-in-ready room. But vacancies, repairs, tenant turnover, unpaid bills and wear and tear all threaten the bottom line. Bilbao City Council reported that more than 29,600 people were seeking housing in the city in the final quarter of 2024, including 23,000 looking to rent and 6,600 seeking to buy. That citywide demand provides market context, but does not establish the rent or occupancy a particular flat can achieve. Location, room size and shared facilities still matter.
Legal Structure and Contract Nuances
Under Article 8.2 of Spain’s Urban Leases Act (LAU), partial subletting of a dwelling requires the landlord’s written consent. Unauthorized subletting can give the landlord grounds to terminate the basic lease under Article 27.2.c. The LAU also caps the sublet price at the rent applicable to the part of the dwelling being sublet. For a rent-to-rent arrangement, the owner’s written authorization should expressly allow the operator to let rooms separately, and the basic lease must align with the room agreements.
The legal structure for room rentals can also depend on the contract’s actual purpose and the applicable statutory rules. Room leases have often been treated under the Civil Code when they do not fall within the LAU’s residential-lease structure. A contract for a room does not, by itself, settle its legal status. Whether a stay is genuinely temporary or meets a permanent housing need can also matter. These distinctions matter when assessing a plan to collect €1,600 in room rents on a €950 basic lease: the gross arithmetic alone does not determine whether the arrangement complies with the contract and applicable law.
Market Trends and Gender Shift
Information from a recent CBRE report, Spanish real estate investment reached €12 billion in the first half of 2026, with annual growth expected to surpass 15%. That signals strong interest in property, but does not guarantee rent-to-rent models will be profitable everywhere. Success depends on local demand, costs, occupancy and regulatory compliance.
Women are increasingly active in alternative property investment. The SegoFinance Barometer estimates that women now make up about 43% of its 45,000-strong investor community, though that is not a full picture of the Spanish market. Baselga’s experience shows a lower-capital entry point than buying, but also the need for constant oversight and clear contractual terms.
Anyone considering similar strategies needs to understand the legal and financial risks. Contract details can also carry impressive financial consequences in other sectors, as a recent court ruling on retirement bonuses illustrates in a report by russpain.com. In property, as in employment, the details matter.
