Residential Development · Marbella

Homes Built
to Last
in Marbella

Discover our portfolio

One Development

Fewer projects.
Higher standard.

Eleven years of work across premium design, interiors and residential development shaped one conviction: the quality of a home is determined before the first wall goes up.

One Development works on a deliberately small number of projects — so that each one gets the full depth of attention it deserves, from site selection through to the final finish.


About One Development
One Development interior — open-plan living room
11
Years of experience
8+
Exclusive projects
35k
Square metres delivered
Featured Projects

Our Villas


Villa MADRISA
Nueva Andalucía MADRISA
4 beds262 m²
Villa RITA
El Paraíso Alto RITA
4 beds385 m²
Villa SANDRA
La Heredia, Benahavis SANDRA
Approach

How we work

Architecture — Villa RITA exterior

Architecture Sets the Tone

The concept is set before anything else — shaped by the specific site, orientation, views and surrounding context.

Material Honesty — Villa RITA kitchen

Material Honesty

We use materials that age well and perform honestly — stone, oak, plaster and steel sourced from trusted European suppliers.

End-to-End Control — Villa MADRISA living room

End-to-End Control

Design, procurement and construction are managed in-house. That alignment is what prevents quality from slipping.

Interiors

Every room, considered

Mihail Guscin — CEO One Development
Founder

Mihail Guscin

Founder & CEO — One Development

Since 2013, Mihail has worked at the intersection of premium interiors, architecture and residential development — accumulating a depth of knowledge that informs every decision One Development makes.

His track record spans 8 completed projects and over 35,000 square metres in Riga, where he developed a reputation for projects that are as well-executed as they are well-designed.

Marbella is a deliberate next step — a market where those same standards can be applied to homes of genuine architectural ambition.

"A home should be designed to be lived in well — not just to photograph well."

Meet the Founder

Co-invest in
Marbella development

Each project is structured through a dedicated SPV, combining senior financing with private investor capital. Returns are clearly defined, capital is asset-backed, and One Development receives its profit share only after investors are repaid in full.

View Investment Structure
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