Custom Home Builders &
Renovation Architects in Mosman
The complete renovation approach - Ballast Point brings design, construction, and DA approvals under one roof
With Ballast Point, you don’t need to juggle separate contractors. Our team of registered architects and licensed builders delivers high-quality design, cost clarity, and DA approvals expertise - all under one roof, trusted by homeowners across Mosman and Inner Sydney.
“We’ll help you make something truly amazing, with creative designs and local insights in planning and heritage”
Registered Architects & Licensed Builders: One team for both design and construction
High-Quality Design & Execution: Stylish, functional, and built to last
Cost Clarity: Transparent budgets, fixed-price consultations, no surprises
DA Approvals & Compliance Handled: Smoother council process, less stress
10+ Years Inner West Experience: Trusted knowledge of Mosman’s character homes and unique sites
Tailored Solutions: Every renovation is customized, never one-size-fits-all
Why Choose Us?
Design & Build Experts
Our Core Services
Ballast Point offer six key services that guide your renovation or custom build from first consultation through to construction and ongoing care.
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1. Feasibility & Design Consultations
Our architects and builders evaluate your site and budget, guiding you through approvals so you can move forward with clarity.
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2. Architectural Design for Renovations & Custom Homes
We create beautiful, practical, and compliant designs that suit the Northshore, from heritage streetscapes to sloped blocks. Our team guides you from concept to council approval and beyond.
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3. Construction for Renovations & New Homes
Licensed and experienced builders delivering high-quality renovations and custom homes, compliant with Mosman council and site requirements.
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4. Fixed-Fee Property Maintenance & Repairs
Quick, fixed-fee repairs for your home. We take care of leaks, moisture, and general wear with practical solutions and a clear plan for what’s next.
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5. Support for Buyers & Real Estate Agents
Feasibility checks and 3D renders that help buyers and agents assess potential and market homes with clarity.
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6. Site Feasibility & Planning
Feasibility checks that clarify what’s possible on your site, from planning rules to concept layouts and early cost estimates.
Need a hand deciding what’s right for you? Get in touch!
Renovation Success Stories!
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Case Study 1: Terrace home transformation for light and connection: Once a narrow, disjointed terrace with limited access to the outdoors, this home was reimagined for space and connection. The redesign opened up the lower level to create a seamless indoor–outdoor living area linked to a landscaped garden and deck, added a second bathroom, and introduced flexible spaces for work and relaxation.
Case Study 2 - Contemporary family home renovation: Originally a three-bedroom home with enclosed rooms and underutilised space, this residence was transformed into a bright, multi-level design. The layout now features two generous living areas, four bedrooms, and three bathrooms, all connected by a feature staircase that enhances light, flow, and connection throughout the home.
What Our Mosman Client Says
“We recently engaged Ballast Point Architects to design a new ensuite in our master bedroom, redesign our existing bathroom, and assist us in obtaining a Complying Development Certificate (CDC) for the works to our apartment. Peter and the team had in-depth knowledge of the CDC process, the NSW Planning Portal and the challenges that come with obtaining development consent for a Class 2 apartment building. The team were very responsive, coordinated seamlessly with the other practitioners, had great attention to detail and helped us achieve approval smoothly and efficiently. Highly recommended.”
Frequently Asked Questions
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We offer a full range of services tailored for apartment renovations in Mosman — from early-stage design consultation and feasibility advice to construction and post-completion support. Our team provides architectural design, building services, heritage guidance, and support with planning approvals.
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We specialise in high-quality home renovations in Mosman, especially those involving apartments with structural limitations, heritage overlays, or strata requirements. Whether it’s redesigning interiors for modern living or carefully reconfiguring layouts, we help you get more out of your space.
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Hiring an architectural builder means you’re working with one team from design to completion — helping you save time, reduce risk, and achieve better outcomes. As experienced architect and builder professionals, we deliver creative, practical solutions tailored to your lifestyle, budget, and the unique constraints of apartment renovation. While based in the Inner West, we’re proud to support projects beyond it — bringing the same standard of care that’s made us trusted Inner West Architects to Mosman’s diverse homes.
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Many properties in Mosman fall under heritage or conservation controls, especially those with character facades or within historic apartment buildings. We can help you understand what rules apply and design accordingly, ensuring your renovation stays compliant.
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It depends. Some minor internal apartment renovations may be approved through strata or exempt from needing a DA, while others — like external works or changes affecting common property — may require formal approval. We’ll guide you through the process and help liaise with Council if needed.
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Renovation costs vary depending on the scope, finishes, and access challenges. As a builder Mosman residents turn to for quality, we offer honest estimates upfront, helping you understand what’s realistic for your budget — from bathroom renovations Mosman-wide to complete unit overhauls.
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We do both. From kitchen renovations Mosman apartment owners need to reconfigure tight spaces, to larger redesigns involving bathrooms, bedrooms, and open-plan living, we’re happy to help — no matter the scale.
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Book a Design Consultation with our team. We’ll meet onsite, discuss your goals, and outline a roadmap tailored to your home and your budget.
Have a read through our latest posts
Plan for Slopes and Access
Mosman’s steep terrain and narrow streets can make excavation, deliveries, and parking tricky. Early site planning helps avoid costly delays and neighbour complaints.Check Heritage and View Controls
Many properties fall within conservation or scenic protection zones. Confirm restrictions on height, façade changes, and materials before committing to a design.Address Coastal Exposure
Homes near the harbour face salt, wind, and moisture damage. Choose corrosion-resistant materials and waterproofing systems designed for coastal conditions.Design for Light and Privacy
Houses are often close together or shaded by trees. Smart window placement, skylights, and screening improve livability while respecting council limits.Work With Mosman’s Character
From sandstone cottages to modern rebuilds, each home demands a tailored approach. Ballast Point balances heritage respect with contemporary design and functionality.