House Renovation Builder Sunshine Coast

Welcome to Coastal Building & Extensions, your trusted partner in construction on the Sunshine Coast. With over 40 years of industry experience, we specialise in a wide range of services including carpentry, deck building, renovations, patios, home maintenance, insurance work, and new home construction. Our team is committed to delivering top-quality craftsmanship and exceptional customer service, ensuring every project is completed to the highest standards. Why choose Coastal Building & Extensions? Our extensive experience and dedication to excellence set us apart. We prioritise client satisfaction, going above and beyond to meet and exceed your expectations. Our services offer outstanding value for money, combining affordability with superior quality. At Coastal Building & Extensions, we are passionate about turning your vision into reality, creating lasting results that enhance your home and lifestyle.
our benefits

Why We Should Be Your Top Choice


Over 39 Years of experience


We Value Our Reputation and We Will Meet Our Clients Expectations


We Deliver Value
For Money


We Go The Extra Mile

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About us

Experienced Builders Offering Quality Building Services

Coastal Building & Extensions has over 40 years in the building industry. We are located on the Sunshine Coast and specialise in Carpentry – Decks – Renovations – Patios – Home Maintenance – Insurance Work.

Home Building Services Sunshine Coast

At Coastal Building & Extensions, we are dedicated to enhancing your living spaces with our comprehensive home building services. Our expertise covers a wide range of construction needs, including custom decks, garages, granny flats, pergolas, and carports. Each project is crafted with meticulous attention to detail, ensuring a seamless blend of functionality and aesthetic appeal. Whether you want to create a stunning outdoor entertainment area or add a secure and stylish storage solution, our team is here to bring your vision to life. Our commitment to quality and customer satisfaction drives everything we do. With decades of experience in the industry, we understand the unique requirements of home building on the Sunshine Coast. From luxurious granny flats that offer unparalleled comfort to beautifully designed pergolas perfect for enjoying the coastal weather, we provide tailored solutions that enhance the value and enjoyment of your property. Trust Coastal Building & Extensions to deliver exceptional results that transform your home.

Experience leading building quality encompassed


If you drive through a housing development

Granny Flats
Granny Flats

Space. Light. Unparalleled luxury


We create gorgeous pergolas via design


Looking for custom built carport?

Home Renovation Services Sunshine Coast

At Coastal Building & Extensions, we specialise in transforming homes through our comprehensive renovation services. Whether you're looking to modernise your kitchen, upgrade your bathroom, or convert your attic into a functional storage space, our team is dedicated to delivering exceptional results. We handle all aspects of home renovation, from minor updates to major overhauls, ensuring that every project is completed to the highest standards of quality and craftsmanship. Our goal is to create beautiful, functional spaces that enhance your lifestyle and add value to your property. Our home renovation services are tailored to meet your unique needs and preferences. With a focus on client satisfaction, we work closely with you to understand your vision and bring it to life. From garage conversions that provide additional living space to luxurious bedroom renovations and practical laundry upgrades, we offer solutions that combine style and functionality. At Coastal Building & Extensions, we are passionate about turning your existing home into your dream home, delivering results that exceed your expectations and stand the test of time.
Home Renovations
Home Renovations

When it comes to creating amazing homes

Roof Attic Conversions
Roof Attic Conversions

At some point in every homeowner’s life

Garage Conversions
Garage Conversions

Give your home added space & value with a carport or garage conversion!

Laundry Renovations
Laundry Renovations

Upgrade your old laundry to your new dream laundry at a competitive price

Bedroom Renovations
Bedroom Renovations

Renovating your Master Bedroom on a Budget

Kitchen Renovations
Kitchen Renovations

A Worthwhile Investment

Bathroom Renovations
Bathroom Renovations

Renovate an existing bathroom or convert any existing space into a bathroom


Home extensions that locals are eager to contact


Clients Say

Hi Mick,

Just a quick note to say thanks for the great work you have done for us over the years. Right from the start of a job we know exactly were we stand, with regards to price, what is being done and when the job will be started and finished. This has been the case without exception and has made our experiences with you a very pleasant one. We would have no hesitation in recommending you to any one who was considering your services.

We have used Mick (Barry Thompson Building Service) on a number of occasions, these have included renovations , extensions, rebuilding or adding stairs, general decking and pool decking. Projects Mick has complete for us include entire room additions or jobs as small as adding a wardrobe. On each occasion we have found Mick to be honest, reliable and creative in his approach to quoting and completing a job. We have no hesitation in using Mick for future projects or recommending him to other customers.

I am happy to provide comments re Barry Thompson and the standard of work he
has performed at our home. Barry has carried out work for us on a number of occasions over a long
period of time. Examples of the work carried out are The building of a pergola. Complete renovation of our second bathroom Rebuild of kitchen cupboards to accommodate installation of a dishwasher

Barry is very fussy about his work. Jobs are done properly and promptly. We
have been very happy with the work performed and haven’t had to call him
back for rework.

He is easy to deal with and very approachable.

We will be calling him back for any future building jobs we want done

We had a master bedroom extension built by Mick in the middle of 2013. We were highly impressed by Mick’s honesty, efficiency, expertise, work ethic and overwhelming flexibility throughout the entire process, not to mention that we are over the moon with the final result. We could not be happier with the overall service and craftsmanship provided by Mick and his team of subcontractors, all of whom were selected by Mick. Our tiny three bedroom, one bathroom, home is now a four bedroom home with a gorgeous ensuite and huge walk in robe from the master bedroom, along with a private deck overlooking our pool. Thank you Mick for our haven!

“Finding reliable and competent tradespeople is a bit of a lottery. Mick was recommended to us and we can happily say that the recommendation was well deserved. It is such a relief when undertaking renovations to know that you can trust your builder to do the job right, use quality tradespeople and manage the project so that price and timeframes are all under control. Mick also understands that it is your home, not just a building site. He is mindful of that fact and keeps the job tidy and coordinated with your needs while being flexible with any changes of scope or unforeseen issues. Mick completed a quality laundry/bathroom conversion as well as multiple internal reconfigurations on budget and within our schedule. We will be using him again in the future and have no hesitation in recommending Mick Thompson for any building project”.

To Whom It may Concern

Over the past 10 years we have used Mick for numerous jobs around our previous home and also at our current residence.

Micks attention to detail has always been one of his strengths and combined with his own reliable team of sub-contractors has meant that the jobs have always been finished in a timely and professional manner.

We have no hesitation in recommending ‘Coastal Building & Extensions’ for projects around your home

To Whom it may concern
Barry Thompson has being doing our renovations off and on since 2010. He has done bathroom renovations, laundry renovations, kitchen upgrades, cupboard installations, laundry upgrades and decking.
After years of dealing with builders we now consider him to be our “go to guy” due to the fact that he is reliable and trustworthy. His quality of workmanship is next to none and he brings a wealth of knowledge to each project in terms of feasibility and practicality.
The sub-contractors that he uses are always respectful, pleasant and trustworthy.
We wouldn’t hesitate to recommend Barry for any renovation or building contract that you may have.

My wife and I recently decided to renovate our outdoor area and requested several quotes. We finally settled on Barry Thompson of “Coastal Building and Extensions” as Barry, or Mick, as he prefers to be called, arrived on time to give the quote, was strongly against shortcuts and acted in a very professional manner. Mick spelt out every detail of the quote and even renegotiated his price when he agreed to allow me to be his labourer, which reduced the cost of the project considerably. Before anything started we entered into a very professional and precise contract which left no doubt as to the conditions, guidelines and cost of the job. I believe that Mick and I worked as a good team and all through the project I found Mick to be very innovative and a great problem solver. I believe that he also became a good friend to my wife and I. The finished product was nothing short of exceptional and was finished in a very timely manner, well within the contract period. My wife and I would have no hesitation in recommending Mick for any tasks that he took on.

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