RENOVATION & EXTENSION BUILDER

INVERLOCH & BASS COAST

BUILT WITH FORESIGHT.

DELIVERED WITH CLARITY.

Modern kitchen with black cabinets, a concrete island, a white subway tile backsplash, and pendant lights with exposed bulbs.

About.

Founded by a licensed builder with international experience, C3Builds brings a practical, disciplined approach to residential construction. From structural renovations to full extensions, every decision is made with foresight and accountability in mind. Clear scopes, written variations, and structured communication ensure clients understand the process from start to finish — without confusion or unexpected outcomes. 

Our Services

  • Split view of a house design: left side shows a black and white architectural drawing of the south-east elevation with measurements and design details, right side shows a completed, modern house with a wooden deck, large windows, and surrounding greenery under a partly cloudy sky.

    Custom New Home Builds

    Custom new homes are individually designed and built to suit your site, lifestyle, and long-term needs — not adapted from a standard template. The focus is on clear documentation, proper planning, and a build process that delivers consistency from start to finish.

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  • A white house with a newly constructed wooden deck and stairs, surrounded by green trees and grass, under a cloudy sky.

    House Extensions

    Home extensions add new living space while integrating seamlessly with the existing house. The goal is continuity — ensuring the new and existing areas work together visually, structurally, and functionally as one cohesive home.

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  • Construction site with brickwork and a wooden roof framework under construction, scattered bricks on the ground, and a fenced backyard with some trees and trash bins.

    Structural Alterations & Renovations

    Structural works involve modifying the framework of an existing home — including removing internal load-bearing walls to create open-plan spaces, and enlarging openings. When planned and executed correctly, these changes improve how a home functions while maintaining its structural integrity.

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  • Under construction house with stairs leading to front door, scaffolding and tools outside, and trees around.

    Thermal Performance Upgrades

    Improving how your home performs — not just how it looks. Most homes were not built with today’s performance expectations in mind. Insulation was limited. Air sealing was minimal. Thermal performance was not a primary consideration.

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  • Modern bathroom with two oval mirrors above double sinks, wooden vanity, corner bathtub, shower area with glass partition, and wicker baskets. Neutral color palette with grey tiled walls and terrazzo floors.

    Bathroom Renovations

    Bathroom renovations involve more than finishes — they require correct waterproofing, drainage, and detailed coordination between trades. A properly executed bathroom performs reliably over time, not just on completion.

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  • A newly built wooden deck with steps in the backyard of a brick house. The deck has a railing and outdoor furniture, with trees and a clear sky in the background.

    Small Projects & Custom Works

    We regularly take on smaller, well-defined projects that can be completed efficiently between our larger scheduled works. This includes decks, verandahs, custom stairs, gates, and other one-off construction or fabrication jobs.

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If you value clarity, written documentation, and realistic pricing, we may be a good fit.

Choose the path below — we’ll direct you to the right next step. 

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For more formal general questions and early-stage planning.

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Best for first contact. A structured 30-minute call perfect for quick guidance or immediate questions.

Black image with large quotation marks and the text 'Your time is limited, so don't waste it living someone else's life.' attributed to Steve Jobs.

For homeowners ready to provide project details and supporting documents for pricing.

What Our Clients Say About Us!

  • Bathroom Renovation

    “We have used C3Builds for four bathrooms and have been thrilled with every result. The attention to detail is high, communication is exceptional, and time management is outstanding — with projects completed within agreed time frames. Chris goes above and beyond to put the client first. We couldn’t recommend C3Builds more.”

    — Hannah & Danny Gamble

  • New Verandah Build

    “Chris was our builder for a verandah over an existing deck at our home in Cape Woolamai. We were impressed with his organisation of the project and his excellent communication throughout.

    Unexpected changes to the plans and supply delays arose, and Chris liaised with the designer and structural engineer to develop effective, straightforward solutions. The work was completed in good time and the property was left clean and neat. We are delighted with the result.”

    — Shirley Barclay & family, Cape Woolamai

  • House Extension

    “Chris and C3Builds completed an extension on our home. From the start Chris was very helpful and communication throughout the process was excellent. Everything ran smoothly, the project was completed on schedule, and the quality of the finish is great. We would definitely recommend C3Builds.”

    — Ron Pennefather

  • Bathroom Renovation

    “Chris and Max renovated my bathroom after water damage. Chris provided clear options on how to approach the renovation and was professional and knowledgeable throughout. I would not hesitate to recommend C3Builds.”

    — Claire McShane

  • Home Improvments

    “C3Builds has performed improvement projects for me which delivered high quality and dependable workmanship. Chris’ attention to construction and finishing detail gives me confidence to recommend him for a new build or renovation.

    Chris also understands thermal efficiency and condensation management — the hidden aspects of construction critical to long-term sustainability.”

    — Paul Zanatta

  • Bathroom Renovation

    “Chris and his team renovated two bathrooms for us in Inverloch — including converting one into a disability-friendly space — along with additional tiling, grab rails, and a front access ramp.

    As a tradie of 40 years and living six hours away, dealing with Chris both in person and remotely was one of the easiest aspects of the project. We’ve since had other jobs completed and would highly recommend him.”

    — Matt Downie, Inverloch

Areas We Service

Cape Paterson

Inverloch

Kilcunda

Phillip Island

San Remo

Tarwin Lower

Venus Bay

Wonthaggi

Follow Us on Socials!

View fullsize It’s been a busy start to 2025! Here’s a bathroom reno from earlier in the year! 👆swipe for the before pics C3 Builds is a building company based in Wonthaggi, servicing the Bass Coast and South Gippsland. We offer high quality workmans
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View fullsize Have you spotted our van around town? 👀 C3 Builds is a building company based in Wonthaggi, servicing the Bass Coast and South Gippsland. We offer high quality workmanship at an affordable price. 🔨 We can assist with: - New house builds - Extensi
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View fullsize I N T R O D U C I N G… The talented team at C3 builds 🤩 Max - apprentice (left) & Chris - registered builder (right) Also, a big thank you to Dani @focusonhandsot for your help with our logo & Gareth @signselite for bringing it all t
View fullsize Taking a look back at this #tinyhouse we built. 👀 This project was a long time dream to of my mine to build and live in. It was designed over a three month period and my wife Emily and I lived in a caravan while it was being built. We then moved in
View fullsize 🔨 Ode to the Toolbelt: Unsung Hero of Every Project 🛠️ Where would I be without my trusty toolbelt? Probably back at the truck for the umpteenth time! 🚚😄 Every builder knows that a good toolbelt isn’t just an accessory; it’s a necess
View fullsize Blending the Old with the New at C3 Builds 🪟 We're excited to share a glimpse into one of our projects—installing a new window into a beautiful old bluestone homestead. It's all about ensuring that the new complements the old perfectly, enhan
View fullsize Recently we helped a customer with a couple of smaller jobs. The first job was a fire place mantle that we attached with French cleats, making it easy to remove. The second job was custom storage that we built with hidden fasteners, giving the appea