Built to last.
The Sydney builder that gets it right the first time. Licensed, insured and 5-star rated — trusted by homeowners in Mosman, Double Bay and the Eastern Suburbs.
Serving Sydney since 2018 · Licensed & Insured · Free Quotes
“The best in the business. Carpentry to perfection and detail.” — John Kandylas, Google Review ★★★★★
We don't cut corners.
We build them properly.
Licensed, insured and 5-star rated — building across Sydney's finest homes since 2018.
Custom carpentry & timber fit-outs
Hand-crafted timber, precision fit-outs and cedar cladding. Made and installed properly — no shortcuts, no flat-pack.
Outdoor saunas & backyard retreats
Sydney's authorised NordicWellness installer. Indoor, outdoor and pod saunas — delivered, positioned and fully installed. Every job licensed and insured.
Outdoor Install · Sydney
Sauna installs that speak for themselves
25 five-star reviews. Every install handled end to end — site prep, delivery, positioning, electrical coordination and final fit-out.
Full renovations & custom builds
From kitchens and bathrooms to full structural builds. One licensed builder managing the whole job — no trade juggling, no surprises.
Custom Build · Blakehurst
What Sydney clients
say about us
“The best in the business. Carpentry to perfection and detail. Some call him OCD — it’s what we need. Well done.”
“What an amazing job Alexander did for my home. We had recently purchased a sauna that Alexander installed very neatly in our backyard and I am more than happy with the final result. Beautiful work Alex!”
“Great work from Alex! Our friend Jean-Paul recommended Alexander to refit & install doors at our new place and they came out perfect! Highly recommend.”
“Alexander consistently delivers high quality carpentry with great attention to detail. Reliable, professional, and easy to work with. Highly recommend!”
“Highly recommend BuiltByAJ. Fantastic bloke and very respectful. His attention to detail is unreal and he puts his customers first every time.”
“Top work skills. Knows how to deal with customers, treats people with respect and most importantly delivers quality work. Highly recommend — jobs will be quality and fast.”
“Great experience from start to finish. He was professional, reliable, and paid close attention to detail.”
“Would highly recommend AJ to anyone. An extremely skilled carpenter who always does a fantastic job and works very hard.”
“Reliable, everything explained clearly. Highly recommended — a pleasure working together.”
“I engaged BuiltByAJ to do some repairs around the house and I couldn’t be happier. Alex was professional and on time.”
“Quality workmanship and professionalism.”
“Highly recommend Alexander — his work is of exceptional quality and he is very reliable. He takes great pride in everything he does and communicates clearly throughout the entire process.”
“Alex is unreal! Attention to detail, communication and quality of work. You will not find anyone better.”
“Did some carpentry work for me and did some great work. Highly recommend.”
“We had Alex install a sauna at our place and we couldn’t be more pleased with his quality of work. Alex has a lot of care and attention to detail.”
“AJ was a pleasure to deal with & his work is of extremely high quality. AJ was efficient, clean and professional.”
“Great work and easy to work with.”
“We had our sauna installed and are very happy with the process and results. The communication was good throughout and the team were reliable.”
“Alex was super polite and efficient. His communication in the lead up to his arrival was excellent. Great operator!”
“Alex was on time as planned, explained himself well about the service call to our sauna and carried out the service promptly and efficiently.”
“I’ve been working with AJ for some time now, and I couldn’t recommend them more. They have a fantastic working system and always deliver.”
“Alex was very punctual, communicated well and did a great job.”
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