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Building Award Winning Spaces

Sienns Developments have many years experience working in the building trade with the founder, Lee, starting his college tuition in the trade from 16 years old. Since starting out we have steadily grown,  just by word of mouth, thanks to our customers recommending us to others and cementing our good name. We are really proud of our reputation and we are now one of the area’s best known names in loft conversions and home developments. (See our testimonials page, we are really proud of ourselves!)

We believe that the reasons we are so highly recommended is twofold: our excellent building work, and our excellent customer relations. We believe it’s always best to meet face-to-face to discuss a client’s requirements so we offer an absolutely free, no-obligation quote service as standard.

Also, as most of the guys we employ are dads, we understand that we are often enlarging a busy family home and are respectful of your space, and your family’s needs.  We won’t interfere with a ton of questions or requests for cuppas when you’re trying to get the kids out of the door on the school run, and we won’t leave the place “looking like a building site” when you get back. We will keep you fully up to date with your build at every stage, the only surprise you will have is how smoothly it all runs for you.

Meet Our Team

I couldn’t be prouder of my dedicated team. Some of the best in their chosen fields, rest assured you’re in safe hands with the team at Sienns Developments.

Mr& Mrs Sienns
Mr& Mrs SiennsCompany Directors
One of us is the brains, the other the brawn, we’ll let you decide which is which!
JamesTeam Leader
Better known as ‘Bally’. Nothing beats this man! The joker of the team.
AshTeam Leader
Ash is the traveller of the team.
AlexTeam Leader
Starting them young, here with his apprentice!
JoeTeam Leader
The rugby player who likes to fish.
RyanTeam Leader
Always laughing and you can’t miss his laugh!
BradApprentice Team Leader
With Sienns since being a young, shy, college apprentice.
TomBuilding Team
Making his way up the ladder, loves a pose!
TyeBuilding Team
Another one making their way up that ladder. Mr image!
JakeBuilding Team
Relative newbie, coming along nicely… with celebrity connections!
TristanBuilding Team
Newest addition to our team. An A* attitude.
Lovely lad who loves a holiday! (Who doesn’t?!)
Keen golfer who is also prone to a selfie.
RyanRoofing Contractor
Nicest guy you will meet. Smart guy too…
BenRoofing Contractor
What can we say? ‘Mr Lead’ let’s leave it at that!
ShayStair Manufacturer
‘Tread’ carefully with this one, loves a bit of adrenaline…
Tilling of the highest standard

Project Gallery

Need some inspiration? Take a look at some of our most recently completed projects.



This is the reason I work hard! My beautiful daughter Sienna, the namesake of the company. I named my business after her because she means everything to me, and this makes me go the extra mile to keep the good name of Sienns Developments as well renowned as I do. I’m building for her future, not just my own. As I’ve said, this is a family operation, Louis the apprentice is my nephew, and I am lucky to have my wife Amy as my glamorous assistant looking after all the paperwork behind the scenes.


Our Achievements

Did we mention we’re award winning loft conversion specialists? We’re sorry, we don’t mean to go on but we are VERY proud of our achievements!

Creating award winning spaces

We’d love to help you make the most of your home. Get in touch to have a chat about your plans or to arrange a free, no obligation quote. We look forward to creating something amazing together!