DAK & Tulp Group

New proposition Groene Hart Hypotheken

groenehart_main-1300×600 groenehart_main-1300×600


on the first day


mortgages granted
since launch

‘Re-using’ a successful website with new branding

Sustainable living can be made easier and more accessible for every homeowner. Groene Hart Hypotheken is a new proposition that launched recently, which focuses on comprehensive advice for the mortgage and sustainability of the home. They needed an effective website on short notice to make this known to a greater audience.


The challenge

Groene Hart Hypotheken originated via the active collaboration of DAK Intermediairscollectief with Tulp Hypotheken and De Energiebespaarders. They believe that every Dutch person should be easily able to make their home more sustainable. Through their mortgages, they improve sustainable living by making it easier and more accessible for every homeowner. With this, Groene Hart Hypotheken helps the Netherlands to live energy-efficiently.

They asked SowiesoDigital to develop a website that includes all mortgage advisors on short notice.

After all, they are the key to the right energy advice and sustainability. Furthermore, they can also look at how to finance this sustainability in the best way.

As Groene Hart Hypotheken is a collaboration with Tulp Hypotheken, which SowiesoDigital developed a website for as well, we were asked to use that website as a template and ‘remake’ it. To then customise it to fit the visual identity of Groene Hart Hypotheken. Entirely in line with the idea behind sustainable mortgages, the website also had to reflect sustainability.

Groene hart

The solution

SowiesoDigital made a new design based on the website of Tulp Hypotheken and customised it to fit the new brand identity of Groene Hart Hypotheken. We have applied this design to the concept of the WordPress website of Tulp Hypotheken. Compared to the initial website, we implemented some minor changes to ensure we can place all content in the template.

Besides that, we immediately optimised the technical aspect of the website to ensure it is up to par and the client can work with it for years to come.

The Bespaarcheck is also included in the website as an iFrame. Via user management in the CMS, we enabled collaborating partners to update their share of the information, whether this concerns mortgage information, new sustainability improvements or current interest rates. On a second iFrame, ‘search an advisor’ is shown, which solely reveals advisors that keep sustainability in the back of their minds. This is a first in the market.

The result

On short notice, a new website is ‘re-‘made using a current website design as a foundation. By applying Groene Hart Hypothekens branding to it, the website has a completely different look than the original. In short: a successful launch of this new proposition, all on a website that can tell everybody the sustainable message to everyone that wants a ‘green mortgage’. And soon after the website’s launch, Groene Hart Hypotheek granted the first loans and the first sustainability trajectories of De Energiebespaarders started. To a more sustainable Netherlands!

Services we used to realise this website


Or as they say themselves

Jean Paul Hoogmans

Manager Marketing DAK Intermediairscollectief

“The website Groene Hart Hypotheken has come about on short notice due to this pleasantly surprising cooperation. During this period, I got to know SowiesoDigital as being solution and performance orientated. This website is a foundation for further collaboration. For example, SowiesoDigital has developed Binco’s brand identity and website and will renew the DAK website.”

Getting started with

Need a new website to launch a new product or proposition on short notice? We can most likely help you realise this. Based on our smart WordPress starter theme and your visual identity, we can ensure we finish the website you need in time!

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