Property Investment, Development &
Strategic Business Growth

Building long-term value across real estate, healthcare, education, and global ventures.

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Projects

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Years Experience

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Different Locations

About Us

Sirer Property Investments is a trading name that encompasses the Sirer Property Group, headed by Ersin Sirer, a London-based businessman with 40 years of property and business experience. The Sirer Property Group covers all aspects of property-based investments, from high-end bespoke residential developments, new builds, and office/warehouse to residential conversions, to long-term high-yielding rental investments.

We also provide strategic business development advice to facilitate companies to expand into international market through a network of credible partners.
SGI is actively involved in the education sector through the development and international expansion of Skylango, a next-generation online language and professional skills academy.

SGI has a philanthropic arm, Sirer Global Giving and the Sirer Global Giving Institute—organisations established to drive positive change through acts of giving. Their work spans mentoring, coaching, volunteering, and connecting individuals with charitable organisations in the UK and around the world, helping to improve lives and strengthen communities.

Property developments & Investments

With over 25 years of experience in real estate investment, SGI has successfully delivered more than 100 projects. Its work ranges from high-end bespoke residential homes and new builds to the transformation of warehouses and offices into multi-unit residential spaces, alongside long-term rental investments that create lasting value.

Sirer HMO Residential Investments

Long term residential investments incorporating sourcing residential opportunities, planning and development process into operational House of Multiple Occupation properties which can produce a up to Gross rents increases of 300%.

Sirer HMO Residences is an upscale HMO Private Rental Sector owner, operator, and advisor with a growing portfolio across London and key towns in Southern England, delivering professionally managed shared living assets that combine strong investment performance with affordable, high-quality accommodation for modern urban residents.

Message from the founder

After four decades in property and international business, I have learned that true success is not measured only by financial performance, but by the value we create for people, partners, and communities. At Sirer Global Investments, we invest with integrity, think long-term, and remain committed to building platforms that drive sustainable growth and positive change.

Ersin Sirer

Founder of Sirer Global Investments.

Strategic Busines Development

Sirer Global Investments is a strategic business development partner for International companies creating enhanced market share in international markets. SGI through its global partners geographically covers West Africa, East Africa, North Africa, Middle East, Turkey, South East Europe, The Gulf and Far East markets. Through our executive-level B2B relationships and networks, we facilitate expansion into new markets and sectors including Healthcare and Construction.

International Healthcare

Business development partner for Healthcare Groups to provide services from key specialist healthcare, diagnostics, training and tele-health.

Group Florence Nightingale Hospitals

Turkey’s premier private hospital group founded in 1989. Sirer Global Investments is a global business development partner for Turkey’s most established and prominent private hospital group Florence Nightingale.

As one of the leading private healthcare institutions in Turkey, GFN operates with four general hospitals, a medical centre, a teaching hospital and a clinical research centre in Istanbul. The flagship hospital, Istanbul Florence Nightingale Hospital (IFNH) started its operations in January 2013.

Genomed Turn-Key Laboratories

Genomed is a world leader in molecular diagnostic laboratories. These include diagnostic tests, turnkey laboratories, support and training.

Over 20 years’ experience in the field of Clinical Genetics and DNA-based Forensic testing has resulted in an extensive company knowledge base, putting Genomed at the forefront of these technologies.

AFRICA HEALTHCARE & DEVELOPMENT

Innovation, Access, and Growth

Sirer Global Investments Healthcare & Development in Africa

At Sirer Global Investments, we believe that access to quality healthcare is the cornerstone of human dignity and sustainable development. That is why we are actively engaged in advancing healthcare and development initiatives across Africa, working in partnership with governments, private investors, and international organizations.

Our mission is simple: to provide, create lasting impact by improving lives, strengthening communities, and fostering growth.

Facilitating the business development of international healthcare companies, hospitals, diagnostic centres and generic medicines across Africa.

Our Focus Areas:

Healthcare Infrastructure

Generic Medicines & Pharma

Diagnostics & Technology

Training & Development

Our Vision

Every project we undertake is about more than bricks and mortar – it is about hope, opportunity, and resilience. By combining international expertise with local knowledge, we create solutions that respond to today’s needs while building a foundation for tomorrow’s prosperity.

Through healthcare and development, Sirer Global Investments is investing not just in projects, but in people, communities and Africa’s future.

SGI Education

Skylango Online Language & Skills Hub

Through SGI Education, Sirer Global Investments supports the development and international expansion of Skylango, a next-generation online language and professional skills academy designed to meet the evolving needs of individuals, professionals, and corporate clients worldwide.

Skylango delivers high-quality language training alongside online coaching in communication, public speaking, leadership, soft skills, and AI-enabled learning solutions, combining expert instruction with advanced digital platforms. Backed by SGI’s strategic guidance, operational support, and global network, Skylango is positioned as a scalable education platform empowering learners with the skills, confidence, and digital fluency required to succeed in today’s global economy.

Key People

Ersin Sirer

Founder & Managing, Director SGI Group

Ersin Sirer is a London-based businessman with over four decades of experience in property investment and international business development. He leads Sirer Global Investments Group, overseeing high-end residential developments, commercial-to-residential conversions, long-term rental portfolios, and strategic advisory services across the UK and global markets. His work extends across Africa, the Middle East, the Gulf region, and Asia, focusing on funding, partnerships, and sustainable growth initiatives. Ersin is also a published author, mentor, and active philanthropist, and is the founder of global education and charitable initiatives supporting leadership and professional development.

Robert Mumby

Chief Architect

Robert is a qualified architect with over 25 years of experience specialising in high-end residential design. He began his career at Weldon Walshe Architects, leading prestigious private residential projects in Mayfair, Belgravia, and Kensington. He later joined Archer Humphryes, working on major UK and international developments including luxury residences, hotels, and hospitality projects. Since 2015, Robert has collaborated with Paul Williams Design, delivering high-quality residential refurbishments across West London, with extensive experience in Listed Buildings and Conservation Areas.

Ethem Berk Turkover

Group Chief Financial Advisor and Brokerage

With over 25 years of experience in international banking, Ethem Berk Turkover is exceptionally well positioned to advise on both straightforward and complex funding requirements. Independent financial consultant specialising in finance solutions for businesses, property investors, and international clients. Connecting borrowers with private lenders both in the UK and globally managing the full funding process from initial enquiry through to completion. Services include commercial and property loans, development and bridging finance.

Sami Ounzar

Head of Real Estate

Sami Ounzar is an experienced real estate professional with over a decade in the industry, specializing in sourcing premium residential properties in Prime Central London and France. He identifies high-value opportunities and secures exclusive deals across prestigious areas including Belgravia, Knightsbridge, Chelsea, Kensington, and South Kensington. With more than seven years at Foxtons and senior roles at Berkshire Hathaway HomeServices and Angel Riviera Partners, Sami brings strong market insight and negotiation expertise. Multilingual in French, English, Arabic, and Italian, and educated in Nice, he combines analytical rigor with a client-first approach to deliver tailored, results-driven property sourcing.

Amine Zougagh

Director of Strategic Support

Amine Zougagh brings extensive cross-sector experience spanning senior leadership roles in security services, private education, and commercial operations. He supports the Founder by delivering in-depth market analysis, overseeing project evaluations, and managing operational and administrative processes from concept through completion. With strong expertise in strategy, communication, and digital engagement, Amine plays a key role in ensuring informed decision-making and effective execution across UK and international markets, contributing to the group’s strategic alignment and long-term growth objectives.

Clare B Wright

Chartered Town Planner

Claire Wright brings several decades of experience in Town Planning across London and the Home Counties, providing comprehensive planning and development services to private individuals, developers, investors, community organisations, and the film industry. Her expertise spans Lawful Development Certificates for permitted development, including the conversion of office and commercial properties to residential use, HMOs, and full planning applications for new developments. She also has extensive experience in reviewing and renegotiating planning refusals. In addition, Claire provides feasibility and valuation appraisals, pre-application development advice, and a wide range of other specialist planning services, delivering practical, commercially informed solutions tailored to each project.

Matt Perfection

Head of Construction

Matt has over 20 years of construction experience, in all aspects of the build industry. Matt and his Team of contractors provide a comprehensive range of construction, new build, home improvement, refurbishment services in London and home counties. Large or small, they have the depth of experience to handle any build project. They have an expert team of specialists, offering Plumbing, Carpentry, Electrical Services, Painting & Decorating, Carpets & Flooring, Tiling, Roof Repairs, Kitchen & Bathroom Fitting, Room Renovations, and any other home repair and maintenance needs you may have. Matt's aim is perfection of care and service to his valued clients.

Paul Williams

Head of Interior Design & Project Management

With over 35 years of experience, Paul Williams offers a comprehensive design service, re-imagining spatial layouts to suit any brief. Having worked extensively in interior design and property reconfiguration — from large mansions to compact residential units — he brings exceptional knowledge and expertise to every project. Once a budget is established, Paul sources high-quality fixtures and fittings to transform spaces into unique internal environments, consistently maintaining impeccable standards of finish and delivering projects on schedule.

PHILANTHROPY

SIRER GLOBAL GIVING

Sirer Global Giving reflects our commitment to giving back and creating lasting impact through purposeful philanthropy. Through mentoring, coaching, volunteering, and partnerships with charitable organisations in the UK and internationally, we support initiatives that empower individuals, strengthen communities, and promote opportunity.

By sharing knowledge, experience, and resources, we aim to inspire positive change and improve lives through thoughtful and responsible engagement.

Publications

Property Development & HMO Investment Success

Through 30 years as clients and working with colleagues, this book is a guide about property investments and developments which focuses not just on how to make money but also explains in detail the systems and strategies which build long-term wealth. The book goes through all aspects of investing in property covering creative strategies, taking you from place to a different part of the investment world, how to place an offer, financing and its merits, how to source investments, deal with asset management and much more.

This property book will give you the confidence and insider knowledge to create wealth for the future.

It is a business model that has worked for Ersin Sirer and he now wants to share this with others.

The Power of Giving

Most people associate giving with charity and donating money. There are many ways to give and participate, and you don’t have to be wealthy to give.

Whether it is mentoring and coaching, sharing your knowledge and expertise, or helping others to realise their potential.

We are givers. It is what we do. Generosity and compassion are at the core of the values that we live by every day.

Giving the right thing, at the right time and in the right way. People give not because they have to but because they want to.

to be published soon...

Give Yourself Time

Time, meaning, and the art of conscious living

Time is the most valuable resource we have. Unlike money, possessions, or opportunities, once time is gone, it is gone forever. It cannot be paused, stored, or reclaimed. Every passing moment is unique, and it is this uniqueness that makes time priceless. How we choose to use our time ultimately shapes the quality of our lives, our relationships, and the legacy we leave behind.

To give yourself time is not a passive act. It is a conscious decision—to live deliberately, to value each moment, and to engage fully with life rather than rushing through it. When we fail to recognise the value of time, we drift. When we honour it, we awaken.

National Press

Industry Recognition and Media Coverage

Ersin Sirer has been featured in leading national and international publications, highlighting his four decades of experience in property investment, business development, and global entrepreneurship.