Plan Smarter. Build Better. We've got you

Enjoy a seamless, professionally managed home addition or major renovation in Sydney.

Design to Completion.
Clear Build Scope & Pricing.
Quality Guaranteed.

Let’s plan your next home upgrade. Professionally managed, with confidence.

Projects

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Homes Built

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Our process for home additions & extensions works better for clients

Step 1
Site Appraisal

Site appraisal.
Review objectives, budget & design opportunities

Step 2
Design & Approval

Detailed review of design & buildability

Step 3
Tender

Prepare Detailed Scope of Works & Get Fixed Price Quotes from Quality Builders

Step 4
Project Management

Professional on site management so budget, timeframe and quality is met

Meet John Lianos, Sydney’s Home Building Advisor. With over 25 years of experience as an independent Class 2 builder and client-side project manager, John has become a household name for quality-managed design and construction of custom homes, second-storey additions, and major renovations across Sydney’s Inner West, Inner City, Eastern Suburbs, North Shore, and Northern Beaches.

At HBA, we put clients first. We provide honest, reliable project management and we support you every step of the way, ensuring your design is flawless and your home is crafted to the highest standard.

John Lianos – Founder and Director

"Our expert designers know how create space for growing families. Our licensed builders offer early stage solutions to save on build costs"

What Our Clients Say

I’m grateful to have engaged John from HomeBuildingAdvisor to help get our home renovation project back on track after it was left abandoned with defects and quality issues by our first builder. HBA obtained the necessary CC approvals and provided us with tender management and on-site project management services. John developed a tailored and detailed scope of works that captured every element of our bespoke terrace renovation and ensured these details were built into the construction contract. Throughout the process, John helped deliver our home with care, precision, and professionalism. Each site meeting was purposeful, and his advice and building recommendations were consistently helpful. Thanks to HBA’s thorough approach, variations were minimal and the entire build ran smoothly. I highly recommend John from HomeBuildingAdvisor to anyone seeking a quality build and a positive, well-managed renovation experience.

Lachlan Clough

Paddington - Nov 2025

We highly recommend John and his team from Home Building Advisor. We have recently worked with John to design a bespoke renovation and first floor addition which had to take into consideration our family needs, site challenges and budget. We were very happy with the whole approach undertaken by John as he had an unbiased approach to solving problems whilst being conscious and balanced about our desired outcome. This was proven throughout the discovery, design and tender process. John was generous with his time and with instilling his knowledge from previous projects he had undertaken. Based on the timeliness and responsiveness of the varying professionals called upon to undertake aspects of design work and to tender for the build, it was very clear that John has access to a great network of building professionals.

Donna P

Mascot - 2024

John and the team at Home Building Advisor are an incredibly diligent, hardworking, knowledgeable and professional team. John had assisted me in completing and navigating on my first duplex development project in the East of Sydney. I cannot be more grateful that I was able to work with John. Along with the team of professionals he had recommended, he has guided us throughout the entire process from design, tender management, to construction certificate, whilst providing many cost and time saving solutions. He has gone above and beyond, and has spent weeks of unpaid hours on behalf of myself and my family working on our development project. If you are a first-time developer reach out to John and the team.

Matthew Phelps

Eastlakes - 2024

We were grateful to have engaged John for our home renovation after being referred to him by a friend who built their new home through Home Building Advisor. After conducting a thorough assessment of our home and initial consultation, the design and detailed scope of works were tailored to suit our budget and requirements. Our home is nearly 100 years old and John was always open and honest about the challenges. He showed extensive knowledge in overcoming issues that come with older buildings and was able to find practical solutions that saved us thousands. He made sure our home was built within the timeframe and always checked that the work was of the highest standard. This was our first major renovation and we were initially nervous about such a large undertaking, but having John systematically take us through each step of the design and building process gave us confidence we were in good hands...

Brendan W

Northbridge - 2024

Paddington Terrace - Before

"We engaged John at HBA for advice on the terrible workmanship on our abandoned terrace project in Paddington.
He helped us obtain necessary Council approvals to undertake both internal and external additions." Lachlan C

Paddington - After

"He successfully managed the design & approval process at Woollahra Council and saved us over $32,000 with the correct project scoping process. Things that the last builder missed.
We had his expert support through the renovation works and our terrace was delivered to the highest standard." Lachlan C

Surry Hills Terrace Addition - Before

Sydney's Inner City and Inner West tight access sites are HBA's specialty.
"We engaged John after being rejected on our original application to create rear and upper level additions to our terrace home in Surry Hills." Leigh G

Surry Hills - After

"On John's advice, we engaged a fire engineer to prepare a performance solutions report that enabled creation of an additional attic bedroom and significantly larger living spaces on ground floor.
We had peace of mind that with John's expertise, our project ran smoothly while we were overseas." Leigh G

Mascot 1st floor addition - Before

"We approached John and his team because we wanted to maintain the current setback on our home and to create additional first floor bedrooms and living areas. We originally had a local builder tender on the project but he could not meet their budget. John helped make our project a reality." Donna P

Mascot - After

"Through his trusted network and clever project scoping, our tender price came in $180,000 lower than our original builders estimate.
We were ecstatic that our project was completed to the highest quality under John's supervision." Donna P

Mascot - Joinery

"We also saved over $22,000 using HBA's exclusive joinery contractors.
They delivered our custom kitchen, laundry and wardrobe to perfection." Donna P

Luxury Duplex - Sydney East

"John from HBA helped me unlock the development potential in my property. His thorough understanding of Sydney's property development ecosystem helped us achieve the best possible yield on our investment." Matthew P

Need to build another level or extend your home in Sydney's Inner West, Eastern Suburbs or Northern Beaches

Why You Will Love Our Design & Building Journey

clients come First

We believe that with professional, honest and fair conduct, home building becomes a positive and rewarding journey for both clients and building professionals alike. As independent client side licensed builders and project managers, we manage the design and build from the clients point of view.

save Time & money

Our extensive supplier network and building experience allows us to find cost savings with savvy procurement or by suggesting smarter, more efficient ways of building right from the design stage. This helps mitigate expensive surprises on site.

25 Years Experience

John is a fully licensed Class 2 builder and client side project manager with 25 years experience in custom new homes, major additions and medium density projects across Sydney. His tailored process ensures you, the client are safeguarded from any pitfalls through both the design and construction stages of the projects life cycle.

Quality Control

Nothing makes us happier than seeing our happy clients move into a home they love. We take pride in our projects and have quality control systems in place to ensure your home is delivered with the highest level of precision and craftsmanship. It is our attention to detail that sets us apart.

Experience an exclusive client side building journey from concept to completion

Home Design & Approval

Home Additions & Extensions

Custom New Homes

Duplexes & Townhouses

The key difference with our custom new homes and additions is that they are built around what our clients want. We are experts in our field and know how to provide the most cost-effective quality homes and additions in Sydney.

What makes building through us better?

Clients come First

We believe that with professional, honest and fair conduct, home building becomes a positive and rewarding journey for both clients and building professionals alike. As independent client side licensed builders and project managers, we represent you and manage the design and build with the primary focus on the projects success.

Early design advice

Before talking to an architect. Talk to us. We ensure your home design suits your budget and lifestyle before you commit. If you don't have plans, we will appoint the right architect or designer depending on your specific council and situation. Our value is in that we check the design work along the way for cost saving opportunities, buildability and potential risks. As experienced project managers on active projects in the construction cycle, we find that we have a better feel of actual build costs than designers. We make sure you don't overdesign a home that you can't afford to build.

Consultant & council collaboration

We will coordinate and engage your surveyor, geotechnical, stormwater, landscape and structural engineer to name a few. Depending on your council requirements, we may also need to engage a quantity surveyor, arborist, heritage consultant, bushfire consultant, fire engineer or Water Servicing Coordinator (WSC). We have a good collaborative relationship with each consultant and council to ensure your project gets approved within the best possible timeframe.

Don't risk going building contract blind

You might be thinking about engaging a builder from the start. But how do you know you are getting the best builder, the best deal and that they haven't deliberately left a bunch of necessary items out of the contract? Your expert building advisor prepares a detailed scope of works with everything you want and ensures your quotes come in on an apples for apples basis. This way, you can rest assure that you have done as much as you possibly can to avoid nasty variations or other surprises when you are on site.

We represent you and keep your project running smoothly

We are licensed builders and client side project managers with 25 years of experience in residential construction. Our residential expertise and project management tools ensure that your timeline, project finances, certificates and quality are all effectively managed. Our technical skills means we workshop solutions, mitigate risks and provide independent advice when you are on site so your project runs smoothly.

Ready for a seamless and stress free Building journey?

Sydney NSW 2000