We are Cornerstonelofts, The Award Winning Building and Construction Co.

Cornerstone Roofing and Construction Co. has over 30 years experience in the Western Australian building industry. We have consistently worked on substantial projects ranging from small home improvements such as installing patio enclosures, to much more advanced home improvements such as attic conversions & second story additions. Our group of experienced construction contractors and tradesmen have developed the ability to work hand in hand with our clients to provide them with their dream homes.

What We Do

(for more information, click on photos)

Attic/Lofts Conversions

Use your waste roof space to make a beautiful game room, music room, storage ...

Roof Windows and Sky Lights

We have an abundance of creative ideas to assist you with the design of roof windows and skylights...

Building Construction

Our group of experienced construction contractors and tradesmen have developed the ability to .....

Roof AND ATTIC ConversionS

Convert your wasted attic roof space into a great storage area or a room you can use.....

Why Convert with Cornerstone?

Our company prides itself on professionalism, workmanship and safety. We do not only focus on how we carry out the work but also the quality of the end product. We have the ability to explore new and innovative ideas for construction and development regarding all different styles of home conversion. With our experience and expertise we know how essential it is to understand the specification of what the customer wants. What can seem like an overwhelming step can be made so much easier when working with our team of loft and attic conversion specialists. Why waste the roof space in your home when we can help you convert the unused space into an extra room that will also add to the value of your property in the future.

Read more

Our Motive

The most important thing for us is achieving complete customer satisfaction. We understand that we are not working on a construction site but we are working in your home. You can be assured that your home is in safe hands with our team. We are the most experienced skilled construction contractors in Perth and have done all kinds of loft extensions, which cost a fraction of the price in comparison with any typical renovation or extension. With your dreams and aspirations well in mind, our enthusiastic and helpful team are more than equipped to complete your dream homes. We do everything in our power to ensure that we come up with a competitively priced and more importantly, a convenient solution for you.

Read more

Additional Services

Garage Conversion

Garage conversions are ideal for creating extra space such as a games room, bedroom, granny ...

House Hold Extension

Most of our clients decide to enlarge their home to add much needed space for a growing family, Cornerstone will look at your...

Home Improvement

We meet a large variety of home improvement needs including electrical, plastering, brickwork, carpentry work and eave replacements....


Decks provide the perfect place for outdoor entertaining and add extra space to your home's floor space..


"I have always been super impressed with the service level of Cornerstone Lofts. They have competitive prices but the reason I keep recommending Cornerstone to friends and family is that their tradespeople are the most professional tradies I have ever had in our house. They turn up on time, work quickly, are unfailingly polite and clean up after themselves. I was pleasantly surprised at how quickly the building work was completed at an excellent quality, when so many times it's hard to even get builders to do quotes on jobs on old houses." -31st July 2014 9:36 am -RebeccaP
Click Here To Read or Write a Review

"We had a loft conversion done, with one bedroom, one bathroom and a storage space. Also we had a formal lounge which was an open-plan design, Rick's team enclosed it and added French doors. Rick and his team were very professional, punctual and extremely well organised. The job was done in about half the time that was originally estimated as Rick did such a good job of co-ordinating the various tradies. Rick always responded to missed calls and messages, and when he said he will do something he always got it done. Rick also managed to spot a few places where we could save money on the job. We are extremely pleased with the job done by Cornerstone and have recommended them to everyone who has asked. We have had a lot of fun showing off our new loft to visitors :)" 23rd February 2015 11:38 pm -MandR
Click Here To Read or Write a Review

"Rick came out and gave us a quote on enclosing our carport into a room. As his quote was the cheapest, and he was willing to do the job as we wanted it done, we went with him. The main tradesman who worked on the job was professional, always cleaned up, was on time, worked quickly and was a really nice man. Other tradesman who came to the house were very professional. Any concerns we had was sorted out quickly by Rick and the finished product speaks for itself. We now have an extra room in the house for our son and we are very pleased." 1st September 2014 10:53 pm Athenaw
Click Here To Read or Write a Review

"I got Rick out to provide a solution for storage space in our roof. He took the time to discuss several options and listened to what our needs were for the space. His final recommendation was to build a simple loft storage only space of about 9.5 square metres. This was not the most profitable option for him but was the most suitable for us! His tradesman were clean, friendly and professional. I was really impressed!" 31st August 2014 4:06 pm ruthh6
Click Here To Read or Write a Review

Owner's Message

"Hi, My name is Rick. Here at Cornerstone Lofts , We are a team of professional tradesmen with an excellent reputation in Perth for Building and Renovation. I would love to help you with professional advice on building inquiries. Please call me on 0419 910 416 or send me a message for consultation. Thank You!!!"