Nestled amidst the historic charms and modern skyscrapers of Sydney are some truly remarkable home extensions, build by creators who are as ambitious and diverse as the city itself. From airy open-plan extensions in the city centre to sleek, modern renovations with views of the iconic Sydney Harbour Bridge, there're numerous businesses in the construction and trades sector that can transform your home into a beautiful haven that meets all your needs.
New to this? Read our guide to home extensions
The score beside each business comes from a single ranking calculated on 21 August 2026. It has not been recalculated since, so it reflects the Google review data we held on that date, not today's.
That calculation is our launch method, and we are replacing it. A fuller explanation of how scores are produced will be published alongside the new method, and these pages will be re-ranked when it lands.
Every one of these 32 businesses shares a score with at least one other. They fall into just 3 scoring groups, marked "=", and businesses in the same group are not ranked above or below each other. We had to list them in some order, so we put the one with the most Google reviews first; that order does not mean one is better.
Rossmark Building Designers specialize in home renovations and extensions in Sydney, offering quality workmanship.
Rossmark Building Designers is highly rated for their quality workmanship and customer-focused approach, making them a reliable choice for home extensions in Sydney.
32 Degrees Building Pty Ltd is a reputable provider of home extensions in Sydney, known for their efficient project handling.
32 Degrees Building Pty Ltd is a well-regarded choice for home extensions in Sydney, excelling in work quality and customer satisfaction.
Brickwood Homes specializes in providing home extension services in Sydney.
Brickwood Homes is a well-regarded choice for home extensions in Sydney, known for reliable project completion and quality craftsmanship.
Keystone Home Additions specializes in home extensions, offering services in Sydney, NSW.
Keystone Home Additions is a well-regarded choice for home extensions in Sydney, offering quality work, good communication, and overall customer satisfaction.
Extend a Home provides home extension services in Sydney, offering speedy and quality project delivery.
Extend a Home is a reliable choice for home extensions in Sydney, known for quality work and effective communication.
Practical Homes offers home extension services in Sydney, focusing on delivering quality and timely projects.
Practical Homes is a well-regarded choice for home extensions in Sydney, known for its reliable timeline, excellent workmanship, and strong customer relations.
Sydney Extensions and Design offers home extension services in Sydney with a focus on quality and customer satisfaction.
Sydney Extensions and Design is a reputable choice for home extensions in Sydney, with strong performance in quality and communication.
Apex Alterations & Additions is a reputed home extensions company in Sydney known for quality craftsmanship.
Apex Alterations & Additions offers high-quality home extensions in Sydney, with effective communication and overall customer satisfaction.
Elite Additions is a leading provider of home extensions in Sydney, known for its commitment to quality and customer satisfaction.
Elite Additions stands out for its quality and customer-centric approach, making it a top choice for home extensions in Sydney.
Smith & Sons Renovations & Extensions Hornsby offers comprehensive home extension services in Sydney, focusing on quality workmanship and customer satisfaction.
Smith & Sons Renovations & Extensions Hornsby is a highly rated provider for home extensions in Sydney, commended for quality, responsiveness, and effective communication.
Hills Homes is a Sydney-based company specializing in home extensions, known for its efficient project management and quality craftsmanship.
Hills Homes excels in providing quality home extensions with timely project completion and strong customer communications, making them a top choice in Sydney.
345 Construction & Project Management is a Sydney-based firm specializing in home extensions, known for their customer-focused approach and professionalism.
345 Construction & Project Management is well-regarded in Sydney for their timely project completion, high work quality, and effective communication, making them a reliable choice for home extensions.
Sacred Homes in Sydney offers home extension services with a focus on quality and customer satisfaction.
Sacred Homes is well-regarded for its quality home extensions, strong communication, and customer focus, making it a trusted choice in Sydney.
Inhaus Living specializes in high-quality home extensions in Sydney, NSW.
Inhaus Living stands out for its quality work in home extensions, with efficient project management and strong customer satisfaction.
Esteem Constructions specializes in home additions, extensions, and renovations in Sydney.
Esteem Constructions is highly recommended for home extensions, offering quality work and good communication, resulting in satisfied customers.
Specialized in home renovations, additions, and extensions in Sydney, Mitroteam Projects is known for delivering effective solutions tailored to clients' needs.
Mitroteam Projects consistently delivers quality home extensions with effective communication and responsiveness, making them a reliable choice in Sydney.
RB Sydney Builders is a home extension service provider in Sydney known for delivering well-executed projects.
RB Sydney Builders is a reliable choice for home extensions, offering efficient service, high-quality work, and positive communication experiences.
Trade Industries Group offers home and apartment renovations in Sydney, focusing on quality and timely project completion.
Trade Industries Group is a reliable choice for home extensions in Sydney, with strong performance across all key areas.
Addbuild Master Builders offers home extension services in Sydney, ensuring quality craftsmanship.
Addbuild Master Builders is well-regarded in Sydney for their reliable home extension services, offering quality work and effective communication, leading to high customer satisfaction.
Cape Cod Australia offers comprehensive home extension services in Sydney, known for its skilled craftsmanship and customer-centric approach.
Cape Cod Australia stands out for its excellent quality of work and efficient project execution, making it a top choice for home extensions in Sydney.
Jonathan Homes Pty Ltd in Sydney is known for providing home extension services.
Jonathan Homes Pty Ltd is a well-regarded company in Sydney for home extensions, providing efficient, high-quality services with good communication and responsiveness, leading to high customer satisfaction.
Refresh Renovations Sydney & Eastern Suburbs specializes in home extensions, offering a range of renovation services in Sydney.
Refresh Renovations Sydney & Eastern Suburbs is a reliable choice for home extensions, with strengths in timely project delivery, quality workmanship, and effective communication, earning strong customer satisfaction.
Emerald Projects specializes in home additions, extensions, and renovations in Western Sydney.
Emerald Projects in Western Sydney is well-regarded for its efficient and quality-focused home extension services, with strong communication and customer satisfaction.
Kooshk Bespoke Builder specializes in high-quality home extensions, offering tailored solutions to customers in Sydney.
Kooshk Bespoke Builder is lauded for its skillful home extensions and effective communication, making it a strong choice in Sydney.
Lumiere Home Renovations offers comprehensive home extension services in Sydney, NSW, focusing on high-quality craftsmanship and effective customer communication.
Lumiere Home Renovations is highly regarded for its quality of work and customer service, making it a top choice for home extensions in Sydney.
SPH Built is a custom home builder in Sydney, known for home extensions that enhance living spaces.
SPH Built provides high-quality home extensions in Sydney with excellent customer satisfaction, although slight improvements could be made in project speed.
Ferrari Constructions Sydney specializes in home renovations and extensions in the Northern Beaches area.
Ferrari Constructions Sydney is well-regarded for both its quality of work and effective project delivery, making it a competitive choice for home extensions in Sydney.
Kay Build offers a wide range of services in Sydney, including complete home renovations, kitchen and bathroom renovations, extensions, custom builds, and granny flats.
Kay Build is a reliable provider of home extensions in Sydney, acknowledged for quality work, excellent communication, and speedy project delivery.
Smart Home Additions is a trusted provider of home extension services in Sydney, known for its professionalism and customer-centric approach.
Smart Home Additions consistently delivers high-quality home extension services with efficient project management, making it a commendable choice for homeowners in Sydney.
Smith & Sons Ryde offers reliable home extension services in Sydney.
Smith & Sons Renovations & Extensions Ryde provides efficient, high-quality home extensions with strong communication and responsive service, resulting in high customer satisfaction.
First Floor Additions offers professional home extension services in Sydney.
First Floor Additions is a trusted service provider in Sydney known for timely, high-quality home extensions, effective communication, and strong customer satisfaction.
Hamptons Homes Sydney - Luxury Home Builders specializes in premium home extensions, offering quality construction services in Sydney.
Hamptons Homes Sydney - Luxury Home Builders is well-respected for quality home extensions, with high marks in quality, communication, and customer satisfaction.
Sydney is a city with a vibrant mix of old and new, where architectural innovation shines bright. Embrace this atmospheric city's charm and entrust your home extension project to one of these highly skilled construction and trades businesses. Whether you seek to add a modern touch to an existing space or create an entire new extension, these experts can provide the craftsmanship and expertise that ensures your project mirror's Sydney's unique blend of tradition and modernity.