Independent advisory for international investors and premium property owners seeking structured execution and capital protection.
If you're looking to sell your luxury property without dealing with multiple agents or unqualified buyers, you're in the right place. I offer an exclusive service backed by an international network and innovative marketing strategies that ensure an effective sale.
Sell your exclusive property quickly, discreetly, and hassle-free.
Stable European legal framework
Controlled supply in prime districts
Strong mid-to-long-term appreciation
International liquidity
Exit clarity in consolidated neighborhoods
FROM UNCERTAINTY AND CHAOS TO A FAST, DISCREET, AND EFFICIENT SALE.
I do not promote listings.
I protect investment decisions.
I do not compete on volume.
I operate with structured selection.
I analyse risk, liquidity and positioning before acquisition or sale.
I negotiate with long-term strategy in mind.
WHO I WORK WITH
• INTERNATIONAL INVESTORS ALLOCATING €800K–€1.5M
• PROPERTY OWNERS SEEKING CONTROLLED EXCLUSIVE REPRESENTATION
• BUYERS PRIORITIZING CAPITAL PRESERVATION
• CLIENTS WHO VALUE STRUCTURE OVER SPECULATION
Eixample Dreta
High liquidity profile. Architectural scarcity. Strong resale demand.
Sant Gervasi
Stable family-driven demand. Low volatility exposure.
Sarrià
Controlled supply. High exit consistency.
Sant Cugat
International family relocation market. Defensive positioning.
A STRUCTURED ADVISORY PROCESS
01 Strategic Alignment
We define objectives, budget or valuation range, timeline and risk considerations before taking action.
02 Market Positioning
Assets are analyzed against real transaction data and liquidity factors, not listing noise.
03 Structural Review
Legal, tax and documentation elements are clarified before negotiation begins.
04 Negotiation & Closing
Offers are structured, timing is controlled and execution is supervised through completion.
EXCLUSIVE REPRESENTATION FOR PREMIUM PROPERTY OWNERS
For owners seeking price coherence, privacy protection and structured market positioning, I offer controlled exclusive mandates designed to preserve value and avoid fragmentation.
Every sale follows a disciplined framework, from valuation architecture to negotiation and closing supervision.
• EU legal integration
• International buyer depth
• Limited new premium supply
• Established prime neighborhoods
• Long-term urban demand

HELLO
I'M CARLOS CARSTENS

Strategic Property Advisor based in Barcelona.
With over 30 years advising private clients across Panama, the United States and Spain, I operate at the intersection of structure, discretion and long-term value protection.
My work is not driven by volume or listings.
It is driven by alignment, analysis and disciplined execution.
Affiliated with Century 21 Spain, I combine local market intelligence with international perspective, guiding both investors and premium property owners through controlled, data-informed transactions..
Carlos Carstens
Strategic Property Advisor
Barcelona · Century 21 Spain