Data CenterSpecialists

At the confluence of real estate and technology

Commercial property is all the same, isn’t it? If you’ve seen one warehouse, fulfilment centre or office block, you’ve seen them all. Do data centers really call for specialist expertise?

Actually, yes they do.

AC Niellsen Data Centers is a new breed of real estate advisory firm for the 21st century. We have delivered over 350 data centers, containerised solutions and computer rooms across Benelux, Europe more widely and other parts of the world. Our clients are national and international enterprises, cloud providers, governments and IT service companies.

So why focus on data centers, how is this new asset class best served and what are we doing about it?


At the confluence of real estate and technology, Data Center’s are a specialist asset class where values are acutely sensitive to location, power, cooling, connectivity and security.  Our principal focus is to provide strategic advice and real estate services for data centers to occupiers, investors and operators.

With a huge resource of knowledge, expertise and contacts we provide strategic advice to clients who need to secure the best colocation solutions within EMEA.


Investors in the data center market increasingly want a single point of contact to look after their investment. This has created the demand for a single-source company that combines know-how in the data center investment market with extensive knowledge about technical infrastructure. That company needs to be able to offer a full and comprehensive total package, including design and service teams to maintain data centers day to day.


We know the data center market inside out, having spent more than 25 years both on the investment side and on the technical and management side. Consequently, we are that unique, single-source company with the knowledge and service teams to provide expertise in multiple disciplines within the data center market. That combination means we are able to create synergies in fulfilling your requirements, resulting in a more cost-effective solution.


We are a specialist real estate and data center advisory company. We have expertise in all things ‘data center’, from design and construction to operation and maintenance. We distinguish ourselves by ensuring we are completely aligned with a client’s underlying business case for investing in datacentres, and understand how the data center may be used in the short, medium and longer terms. In addition to advisory services, we can also run the data center facility itself, providing design and service teams to offer a full and comprehensive total package.

AC Niellsen Data Centers holds an Uptime Institute Accredited Tier Designers (ATD) guarantee, which certifies that our data centers are designed as concurrent, maintainable and fault tolerant installations.

Site selection

Selecting the right site for your data center is a crucial step. We begin with a thorough analysis of your particular needs and preferences, and a detailed understanding how the data center will fit into your overall investment strategy.

We are proactive in identifying off market opportunities throughout EMEA, so if a suitable location exists, we will find it. Where appropriate, we will present multiple opportunities and offer detailed advice on the pros and cons of particular sites, so your decision is fully informed.

Acquisition and disposition

Whether you are looking to acquire a data center as an investment opportunity or liquidate existing data center assets, we have the market expertise and deal-making ability to undertake complex transactions on your behalf.

From initial acquisition appraisals to preparing a business plan for your new data center assets, we are there every step of the way, providing detailed cash flow modelling, overseeing due diligence analysis and providing recommendations as well as working with appointed third parties on technical due diligence.

If you are looking to sell a data center, we have the expertise to maximise your return while ensuring full compliance. We will undertake a proposed sale financial analysis and prepare the assets for sale. We will then liaise with appointed third party legal and technical advisors to complete the sale process and oversee the post-sale handover of documents and the data center itself.

Our fee is based on your success, so we are never less than fully committed to getting the best possible deal for your investment.

Technical due diligence

We have the expertise to oversee due diligence analysis for clients acquiring data centers and to provide recommendations accordingly, as well as working with appointed third parties, as required.

We can also provide technical vendor due diligence (VDD), overseeing everything from assessment of existing asset conditions to building management systems, energy efficiency, Capex and Opex and potential points of failure.

Asset and property management

The performance of your data center depends on careful management. Whether you require help with technical asset management and advice while you oversee the ’white space’ operations inside, or you are looking for someone to take on a landlord function, liaising with a tenant day-to-day on your behalf, we have the expertise to give you complete peace of mind.

Asset management

We can take care of the maintenance of your data center, including building management of exit and entry of existing and new tenants, as well as dilapidations and alterations, upgrades and modifications. And we can liaise with public bodies and relevant authorities on your behalf, including assisting with third party activities such as valuation, insurance and legal proceedings.

Property management

We can also take on data center site visits and tenant meetings, management of existing leases as well as lease renewals, extensions, surrenders and rent reviews. And we provide full Operational Technology (OT) and Information Technology (IT) services and expertise.

Whatever your investment management needs, we are on hand as your expert advisors.

Project management

From design and construction management to ongoing operations and maintenance, we have the expertise to take on full responsibility for any project related to your data center. From briefing to delivery, our project management services are comprehensive and results-focused, and we will keep you informed of progress from start to finish.


Qualified and reliable staff are crucial to the successful operation of any data center. We have the market knowledge and experience to recruit the right staff for your data center either directly or via a third party. And we can oversee smooth staff turnover and training where necessary in order to keep your data center running smoothly throughout the duration of your investment.

Ernst ter Meulen

M. +31 (0) 6 53 15 20 30

O. +44 (0) 20 7129 1187


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Frank de Frémery

M. +31 (0) 6 51 48 11 23

O. +31 (0) 20 215 40 54


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AC Niellsen Datacenters Ltd
33 St James’s Square
London SW1Y 4JS
United Kingdom

+44 (0) 20 7129 1187

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AC Niellsen Datacenters Ltd
Boeing Avenue 262
1119 PZ Schiphol-Rijk
The Netherlands

+31 (0) 20 215 40 54

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AC Niellsen (Ireland) Limited
64 Ulverton Road
Dalkey, Dublin
A96HE40, Ireland

+353 (1) 230 2748

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