About Genworth Group

Inspired by creativity

With a foundation built on time-tested experience and exceptional skills, Genworth has been designing and building some of Adelaide’s most prestigious homes and renovation projects. We offer a unique approach to creating custom-built homes that make a statement in Adelaide.

For Chris Diamantis, Managing Director and founder of Genworth Group, designing and building luxury homes is more than a profession—it’s a lifelong passion. With over 35 years of experience in crafting upscale homes, Chris brings a dedication to excellence that is evident in every detail.

Chris leads a talented team of design and construction professionals who share a deep passion for design and quality craftsmanship. Every project is carefully designed, developed, and constructed by our dynamic team, ensuring a level of quality and attention to detail that is never compromised.

Our team

Welcome to the heart of Genworth Group, where passion meets expertise and creativity combines with
meticulous planning and attention to detail. Our collaborative team approach brings together diverse talents to 
deliver an exceptional, holistic client experience and outstanding homes that stand the test of time.

Chris Diamantis
Founder/Managing Director

Mary Diamantis
Director

Damien Jenke
Director

Fotini Giamarelos
Senior Interior Designer

Nick Diamantis
Development Manager

Joanne Knapp
Financial Accountant

Tim Williams
Construction Manager

Second generation

The business now welcomes the second generation of directorship, with the future leadership injecting fresh ideas, enthusiasm, and passion for timeless design. In conjunction with Chris’ experience and leadership, the team will continue to evolve Genworth’s design ideology and relentlessly pursue perfection. 

Genworth has become a name synonymous with the highest standards in the industry today. Our commitment is to deliver outstanding quality for the best possible price, ensuring absolute customer satisfaction.

“Having your name associated with excellence inspires you and obligates you to always strive for perfection.”​
Chris Diamantis​
Founder/Director
“I am pleased to recommend Chris Diamantis and his firm Genworth as builders. Fifteen years ago Chris built a town house for my wife and I in Walkerville and time has proved the merits of the construction. I have no hesitation in stating that if you employ Chris Diamantis as your builder, you will indeed be fortunate.”​
Dr Robert Britten Jones
Walkerville
“We have lived in one of the Genworth homes for nearly three years and without question it has the look and feel of a brand new home. Much more than just proportions and brilliance, Genworth knows all there is to know about taste, quality, the client’s individual needs and after sales service.”​
Richard & Pamela Thomson
“The entire process from initial planning to completion was a fantastic journey and well handled by you and your professional team. From designer, draughtsman, supervisor and tradespeople – all have performed to a very high standard.

Your input in helping us create our overall vision cannot be underestimated. This is due in large part to your personal passion for excellence and attention to detail resulting in an outstanding final product.”​
Malcolm & Gail Wicks
Springfield
“As our new home has been completed we wanted to thank you and your team for building us such a beautiful home. Genworth has a reputation for quality and your team has produced a building of substance and quality.”​
Glen and Elspeth Cooper
Beaumont
“Our house is light filled and serene and it gives me pleasure to ring Chis every year or two, just to thank him for the beautiful house he built for us.

It must be a rare experience for a customer to become a friend of their builder, but that was our good luck and I can easily recommend Chris Diamantis to anyone who seeks a designer and builder who is a cut above the rest.”​
Darcy & Wendy Douglas
North Adelaide