Can a foreign investor buy a trastero?

Yes — same NIE + notary process as any Spanish property. Cash purchase standard (mortgages rarely available for under-€30k assets).

Is the market becoming saturated?

In central Madrid and Barcelona, supply is approaching mature-market density. The Costa Blanca remains chronically under-supplied — current penetration is ~15% of UK levels. Saturation is at least 8–12 years away on current build pace.

Are platforms like Necker or Bluespace accepting outside capital?

Bluespace and Necker are largely institutionally funded but accept JV co-investment on specific sites. Smaller operators more often partner with private capital on individual developments.

Passive income

Self-Storage Investment on the Costa Blanca

Self-storage is Spain's fastest-growing real-estate asset class — 14–18% per year supply growth, 92%+ average occupancy across mature markets and double-digit IRRs for well-located new builds. The Costa Blanca's transient foreign population and underbuilt provincial market make it one of the most attractive sub-regions in the country.

Last updated 1 June 2026

Market structure in 2026

Spain has roughly 1.1 million m² of modern self-storage, growing fast but still only 0.023 m² per capita — vs 0.4 m² in the UK and 1.0 m² in the US. The Costa Blanca specifically has Bluespace, Necker, Box & Cube, Sergeants and a long tail of local independents. Most established sites operate at 88–95% occupancy.

Demand drivers are structural: dense urban housing with limited storage, high foreign-resident turnover, digital-nomad arrivals needing flexible storage, e-commerce micro-fulfilment from storage units. None of these reverses in any plausible 5-year scenario.

Investment routes

Route	Ticket	IRR (typical)	Effort	Risk
Trastero (single storage unit, resi)	€8k–€25k	5–8%	Very low	Low
Industrial unit re-let as storage	€80k–€350k	7–10%	Medium	Medium
Small self-storage build (200–600 m²)	€350k–€1.2M	10–14%	High (active)	Medium-high
Stake in operator-led platform	€50k–€500k	8–12%	Low	Operator risk
JV with established operator	€500k–€3M+	11–16%	Low-medium	Counterparty risk

Single-trastero economics (the entry point)

A 6–10 m² trastero in central Alicante or Torrevieja rents for €40–€85/month. Purchase typically €10–€20k. Gross yield 5–7%, net yield 4–6% after IBI and community. Vacancy near zero in good locations.

These work as portfolio additions, not as primary investments — but a stack of 8–15 trasteros across the province can deliver €4–€9k/year net with effectively zero workload.

Self-storage build — the higher-return play

✦Site: 300–800 m² industrial / mixed-use plot near urban demand catchment.
✦Build cost: €700–€1,000/m² for partitioned, climate-controlled, alarmed facility.
✦Stabilisation: 12–24 months to reach 85%+ occupancy.
✦Stabilised yield-on-cost: 9–12% per year before financing.
✦Operating model: automated access (Nokē, PTI), card-payment portal, 1–2 hours/week of remote management.
✦Exit: institutional / platform buyers actively acquiring stabilised assets at 6–7% cap rates.

Operational, not passive (at first)

Building self-storage is genuinely operational work — site identification, planning, fit-out, marketing, operational systems. Once stabilised (typically year 2–3), the asset becomes near-passive, but underwriting it as 'passive from day one' is the most common mistake.

Passive income hub

All income strategies.

Parking spaces

Adjacent low-ticket asset.

Real-estate cashflow

Portfolio context.

Commercial property

Industrial / mixed-use angle.

Investor taxes

Storage tax treatment.