Velux Specialist Northern Ireland - Roofspace Conversions and Extensions

Welsh Property Developments  have been converting roofspaces for 35 years, our extensive knowledge of building control and planning requirements ensure we can advise you on any potential development. We work with three architectural practices specialising in the Velux concept of daylight to life to ensure well planned rooms that are functional practical and inspiring. We offer free consultation and initial costings with a no hard sell policy. Appointments with a consultant are free, including practical advise on any development using a Velux concept.

On request, we will be pleased to send you a list of reference projects appropriate to you and your property, including property addresses and contact details. To get in touch, just use our contact form.


 Simply call us on:


Landline: 028 25646777

Mobile: 07775538013


You can also use our contact form.

Office hours are 9am to 9pm Mon to Sat

1pm to 6 pm sundays


Welsh Property Developments

35 Galgorm Road

Ballymena BT43 5HA


Belfast BT9 7DS


Ballymoney BT53 7DA




Velux  Installers academy trained and certified 

Trust mark endorsed

Velux certified 

Qualified Building contractors 

Welsh property developments team include 


time served joiners ,plasterers, electricians ,plumbers,tilers and painters to cover all your project  requirements  ,our teams are also suplemented by structural engineers and  architectural designs .