Article

Marc Andre Siebenborn
7 min. reading time

Article

Marc Andre Siebenborn
7 min. reading time
When buying property in Marbella, most agents will recommend a lawyer after you have found a property. That lawyer may be genuinely independent, or they may have a relationship with the agency that creates a conflict of interest. A small number of companies integrate legal support directly into the process from the beginning, meaning the same team advises on both the property and the legal steps. This article covers those companies and what the legal support actually covers.
Most Marbella agencies refer legal work out to recommended external lawyers
External lawyer recommendations can carry a conflict of interest
Integrated legal support means due diligence, contracts, and taxes are handled in-house
In-house legal support should be active from the first offer, not after signing
There is no cooling-off period in Spain, so legal review before any document is signed is critical
A property lawyer in Marbella is responsible for more than just signing paperwork. A proper legal review covers every stage from the first offer to Land Registry registration.
Obtains and reviews the nota simple confirming ownership and any charges
Verifies the property is free of debts, mortgages, and legal proceedings
Checks all building licences and planning compliance with the local Ayuntamiento
Reviews and negotiates the reservation contract and Contrato de Arras
Calculates ITP or VAT liability and pays all taxes within legal deadlines
On a €1,000,000 Marbella property, taxes, notary fees, Land Registry fees, and legal costs add roughly €100,000 to €150,000 above the purchase price. Getting any of this wrong has financial and legal consequences that can take years to resolve.
Company | Legal support | Type | Best for |
|---|---|---|---|
Helios Homes | In-house lawyer, full scope | Full-service agency | Buyers and investors, full legal coverage from offer to handover |
Costa del Sol Property | In-house legal advisors | Sales agency | International buyers needing purchase legal support |
The Golden Partners | Integrated legal and real estate | Legal-led agency | Investors wanting legal-first approach |
Pure Living Properties | Trusted external lawyers | Sales agency | Golden Mile buyers with separate legal arrangement |
Marbella Company | Trusted external lawyers | Boutique advisory | International buyers wanting personalised advisory |
Helios Homes is a full-service real estate and project management company based in Puerto Banús. The company was founded by Marc Andre and Jean-Pierre Siebenborn, who spent over a decade developing properties on the Costa del Sol with their own capital before managing projects for clients.
12+ years developing & renovating on the Costa del Sol with 37 completed projects
50+ active listings from €390k to €9.5m across Marbella and the Costa del Sol
In-house lawyer active from the purchase stage through to final handover
Fixed price agreed upfront, covers management fee and never changes
What makes Helios genuinely different on the legal side is the scope. The in-house lawyer is not a referral or a partner firm, they are part of the core team on every project.
Handles all due diligence, ownership checks, and debt searches
Reviews and prepares all purchase contracts before signing
Files building licences and planning applications directly with the local authority
Prepares all contractor agreements before any renovation work begins
Reviews all handover documentation before the client accepts the keys
Pros
In-house lawyer covers purchase, planning, contracts, and handover
No conflict of interest between sales and legal advice
Built for international clients who cannot be present in Spain
Cons
Smaller team than the largest agencies on this list
Focused on Marbella and the Costa del Sol rather than multiple regions
Costa del Sol Property operates three offices across Marbella, Calahonda, and Mijas and has an in-house professional team of advisors and lawyers available for property purchases. This makes it one of the few sales agencies on the Costa del Sol with legal support as part of the core team.
In-house advisors and lawyers available for purchase conveyancing
Multilingual team covering Scandinavian, Dutch, German, and UK buyers
Strong reach into the Scandinavian and Northern European buyer market
Wide geographic coverage compared to most boutique agencies
Pros
In-house legal advisors for purchase transactions
Strong Northern European buyer reach and multilingual support
Cons
Legal support focused on purchase conveyancing only
No renovation or post-purchase project management services
The Golden Partners is a Marbella-based firm that combines real estate advisory with in-house legal support, specifically for luxury property investment on the Costa del Sol. The model is legal-led, meaning the legal team is the core of the service rather than an add-on to a sales operation.
Integrates property search, due diligence, and tax optimisation under one roof
Full legal review of ownership, debts, and planning status
Handles negotiation, mortgage advice, NIE applications, and notary representation
Covers post-sale rental management and ongoing property supervision
The Golden Partners suits investors who want a legal-first approach to buying in Marbella. The property search and advisory sit alongside the legal service, but the focus is weighted toward protecting the investment rather than closing the transaction quickly.
Pros
Legal-first model with no conflict of interest between sales and advice
Tax optimisation and post-sale management available alongside purchase support
Cons
Less of a traditional estate agency, more of a legal and advisory firm
Smaller property portfolio than agencies focused primarily on listings
Pure Living Properties is based at Puente Romano on Marbella's Golden Mile and covers buy-to-let, buy-to-sell, plot development, and property management. Legal support is handled through a trusted network of external lawyers rather than in-house.
Covers buy-to-let, buy-to-sell, and plot investment strategies
Property management and lettings department for rental investors
Legal referrals through a trusted external network
The external legal arrangement means the buyer manages two separate relationships, one with the agency and one with the recommended lawyer. For buyers who want to choose their own independent lawyer, this is not necessarily a problem.
Pros
20+ years of Golden Mile experience
Buy-to-let and lettings management available post-purchase
Cons
Legal support through external referrals, not in-house
Potential conflict of interest between agency recommendation and buyer independence
Marbella Company is a boutique sales and investment advisory agency focused on international buyers from Eastern Europe, the Middle East, and North America. Founded by Maxim and Valeriia Vlasenko, the agency offers zero commission for buyers and investment advisory including ROI planning and rental strategy.
Zero buyer commission model, paid entirely by the seller
Investment advisory including rental yield planning and ROI forecasting
After-sales support covering utilities, schools, and household services
Legal support handled through trusted external lawyers
The legal arrangement here is referral-based, meaning the agency works with external lawyers it trusts rather than having an in-house team. The investment advisory and personalised service are the primary differentiators rather than integrated legal support.
Personalised, founder-led service throughout the process
After-sales support beyond the transaction for buyers relocating
Pros
Zero commission for buyers
Personalised advisory with investment and rental planning included
Cons
Legal support through external lawyers, not in-house
Smaller portfolio than larger agencies
Most agencies in Marbella treat legal advice as something the buyer arranges separately. A handful integrate legal support into the process from the beginning, which matters most for international buyers who cannot attend viewings, signings, or meetings in person. The scope of that legal support varies significantly between companies.
Helios Homes is the only company on this list where in-house legal support covers the complete process from due diligence and purchase through to planning permits and final handover documentation, with no external referral at any stage.

Marc Andre Siebenborn
Marc Andre is a Partner and COO at Helios Homes. He holds a business degree from King's College London and has been developing properties in Marbella since 2014. He is fluent in German, English, and Spanish, and oversees renovation and project management for Helios Homes clients across the UK, Germany, Scandinavia, and the US.
Which Marbella agencies have in-house legal support?
Why does in-house legal matter when buying in Marbella?
Do I need a separate lawyer if my agency has in-house legal?
What does a lawyer check when buying property in Marbella?
Is in-house legal important for renovation projects?