Construction Company Sydney

Transform your home into a space that finally fits your lifestyle. MB9 Australia Pty Ltd specialises in professional house alterations and additions across Sydney, helping homeowners reconfigure outdated layouts, add more living space, improve functionality and increase property value—without the stress and uncertainty that often come with major building works.

Every suburb in Sydney has its own building style, council requirements and structural challenges, and MB9 understands how to design and build alterations and additions that suit each area. In the Inner West—Newtown, Marrickville, Annandale, Stanmore and Ashfield—many homes are older terraces or federation houses with tight floor plans. We excel at opening up closed layouts, improving natural light, adding rear extensions, reconfiguring internal walls and creating modern open-plan living while respecting the original architecture.

On the North Shore, including Turramurra, Wahroonga, Killara, Lindfield and St Ives, families often extend homes to create larger kitchens, extra bedrooms, second-storey additions or multi-functional living spaces. These homes typically benefit from structural upgrades, improved flow and premium finishes, and MB9 delivers high-quality additions designed for long-term family living.

In the Eastern Suburbs—Bondi, Randwick, Coogee, Maroubra and Rose Bay—coastal homes often require careful planning due to limited land size, older structures and exposure to the elements. Whether it’s extending upwards, building a rear pavilion, converting unused rooms or opening up living areas to outdoor spaces, we create renovations that feel airy, durable and perfectly suited to beachside living.

Across the Hills District—Castle Hill, Baulkham Hills, Kellyville and Glenhaven—homes tend to be larger but often need smarter layouts or expanded living zones. MB9 frequently builds ground-floor extensions, family-room additions, alfresco integrations and redesigned internal layouts that support busy household routines.

In Western Sydney—Parramatta, Westmead, Auburn, Blacktown, Lidcombe and surrounding suburbs—homeowners often want practical, cost-effective alterations to improve space and functionality. We deliver well-planned extensions, wall removals, structural changes, garage conversions and layout upgrades that maximise every square metre.

Whether you’re turning an old dining room into a larger kitchen, adding a new master suite, building a second-storey addition, opening up your living area, or reconfiguring the entire layout of your home, MB9 provides end-to-end project management, including design coordination, structural planning, approvals, licensed trades and quality construction.

Our alteration & addition services include:

  • Ground-floor extensions and rear additions

  • Second-storey additions

  • Internal wall removal and structural reconfigurations

  • Open-plan conversions

  • Additional bedrooms, living spaces and bathrooms

  • Heritage-sensitive alterations for older homes

  • Layout redesigns for modern living

  • Terrace house extensions and structural upgrades

  • Garage conversions and functional space additions

With strong experience in Sydney’s diverse housing stock and a NSW Kitchen, Bathroom & Laundry (KBL) renovation licence, MB9 ensures all structural, plumbing and electrical work is completed by qualified, compliant trades. Our process is built on clear communication, reliable timelines and meticulous attention to detail.

From heritage terraces in Balmain to brick homes in Ryde, contemporary houses in Turramurra, family homes in Castle Hill and classic cottages across the Inner West, MB9 Australia Pty Ltd delivers house alterations and additions that elevate your lifestyle and enhance your home for the future.

Refer to sections below to find out more details about our specific services.

Eco-friendly / sustainable renovation solutions Sydney

Transform your home responsibly with our Eco-friendly and Sustainable Renovation Solutions in Sydney. At MB9, we specialize in renovations that reduce environmental impact, using energy-efficient materials, water-saving fixtures, and sustainable building practices. From kitchens and bathrooms to full home upgrades, our expert team delivers stylish, functional spaces while prioritizing the planet. Choose renovations that are good for your home and the environment. Contact us today for a consultation and make your Sydney home greener, smarter, and more sustainable. Click Eco-friendly / sustainable renovation solutions Sydney for details.

Renovation project management Sydney

Take the stress out of home renovations with our Renovation Project Management in Sydney. MB9 provides expert oversight from start to finish, coordinating trades, managing timelines, and ensuring quality workmanship for kitchens, bathrooms, laundries, and full home renovations. Our experienced team handles every detail, keeping your project on budget and on schedule while delivering stunning results. Whether it’s a small upgrade or a large-scale renovation, trust us to turn your vision into reality with professional, reliable project management in Sydney. Click Renovation project management Sydney for details.

Interior renovation consulting Sydney

Elevate your home with expert Interior Renovation Consulting in Sydney. MB9 offers professional guidance on design, layout, materials, and finishes for kitchens, bathrooms, laundries, and full-home renovations. Our consultants help you make informed decisions, maximize space, and achieve a stylish, functional interior tailored to your lifestyle. From concept to completion, we provide practical solutions and creative ideas to ensure your renovation runs smoothly and delivers outstanding results. Transform your Sydney home with trusted interior renovation advice from MB9. Click Interior renovation consulting Sydney for details.

Renovation site supervision & coordination Sydney

Ensure a smooth, stress-free renovation with professional Renovation Site Supervision & Coordination in Sydney. MB9 oversees every aspect of your project, coordinating trades, managing schedules, and monitoring quality on-site for kitchens, bathrooms, laundries, and full-home renovations. Our experienced team keeps your renovation on track, on budget, and to the highest standards, while you enjoy peace of mind. From minor upgrades to major transformations, trust MB9 to deliver expert site supervision and seamless coordination for your Sydney home renovation. Click Renovation site supervision & coordination Sydney for details.

Kitchen and bathroom painting / wall finishes Sydney

Refresh your home with professional Kitchen and Bathroom Painting & Wall Finishes in Sydney. MB9 specializes in high-quality painting, textured wall finishes, and durable coatings tailored for kitchens and bathrooms. Our expert team ensures a flawless, long-lasting finish that enhances your space’s style and protects surfaces from moisture and wear. Whether it’s a modern update or a full renovation, we deliver precise, professional results that transform your Sydney home. Trust MB9 for expert painting and wall finishes that combine beauty, durability, and attention to detail. Click Kitchen and bathroom painting / wall finishes Sydney for details.

Waterproofing certification for council inspections Sydney

Ensure your renovation meets council requirements with professional Waterproofing Certification for Council Inspections in Sydney. MB9 provides certified waterproofing inspections and documentation for bathrooms, laundries, and wet areas, giving you peace of mind and compliance with local regulations. Our experienced team works with licensed waterproofers to verify quality and safety, helping your renovation pass council inspections smoothly. Trust MB9 to deliver reliable, timely waterproofing certification and expert guidance for your Sydney home renovation projects. Click Waterproofing certification for council inspections Sydney for details.