
If you are looking to expand your living space without the inconvenience of moving, at West & Sons Construction, we construct home renovations, home extensions and house extensions that create more space, functionality, flow and comfort for your family.
Our skilled and qualified Licenced Building Practitioner home extension builders and house extension builders have delivered thousands of high‑quality construction projects throughout Auckland. We execute building extensions, second storey extensions, garage conversions, home office extensions, attic extensions and custom sleepouts designed to level up your home living lifestyle without breaking the budget.
Whether you’re planning a modern refresh, a few aesthetic tweaks or an extensive home renovation, we make the process seamless and stress free from your first contact to completion. Based in Whangaparaoa, on the sunny Hibiscus Coast and and trusted across the North Shore and Auckland, we build extensions that feel natural, operational, and built to last for generations to come.
Home Extensions & House Extensions Designed for Auckland Lifestyles
Our home extensions and house extensions are crafted with precision to give you more space without the stress of uprooting. Or perhaps you are selling your home and wish to maximize your selling price. Either way, we create flawless home extensions that integrate seamlessly with your existing home while delivering a result that makes the most efficient use of your living spaces.
As specialist home extension builders, we manage every detail to ensure your building extensions are building code compliant, structurally sound and beautifully finished. Whether you need extra bedrooms, a larger living area, or a flexible multi‑purpose space, our house extensions are tailored to your lifestyle. With decades of experience delivering high‑quality home extensions, we help Auckland homeowners maximise and beautify their living spaces whilst adding maximum value.


Home Extension Builders & House Extension Builders You Can Trust
Choosing the right home extension builders and house extension builders is essential for a well executed project. Our team brings decades of experience delivering durable, well‑designed house extensions and home extensions that feel like they’ve always belonged. As trusted home extension builders, we focus on craftsmanship, client communication, and efficient project management. Every one of our building extensions is engineered for longevity and built to New Zealand building code. Whether you’re planning a small upgrade or a massive transformation, our house extension builders ensure your project is completed on time and on budget.
Maximising Space with Second Storey Extensions
A second storey extension is one of the most effective ways to expand your home without losing outdoor space. Whilst council consent is required to design and build a second storey extension, it can integrate perfectly with your existing structure while delivering extra bedrooms, bathrooms, or living areas your family needs.
Our team specialises in complex building extensions, ensuring your second storey extension is safe, compliant, and beautifully finished. Whether you’re in Auckland, the North Shore, or the Hibiscus Coast, we create second storey extensions that add significant value and transform the way you live.


Unlock Hidden Potential With Garage Conversion Specialists
A sensible way to turn unused space into usable, functional space is through a garage conversion extension. We create garage conversions that can become home offices, guest rooms, studios, or self‑contained living areas. Or even spaces to operate home based business from.
Our skilled team handles every aspect of the garage conversion process, including the finishing touches of painting and internal plastering GIB. With extensive experience in home extensions and building extensions, we ensure your garage conversion meets all compliance requirements and feels like a natural part of your home. Homeowners across Auckland and the North Shore trust us to deliver high‑quality garage conversions that maximise space and lifestyle.
Sleepout Builders Creating Flexible Living Spaces
Our team builds high‑quality sleepouts that offer flexible, functional living solutions. As experienced sleepout builders, we create spaces ideal for guests, teenagers craving privacy, hobbies, or additional passive rental income. Every sleepout is designed with the same care and craftsmanship we bring to our home extensions and house extensions. Whether you need a compact studio or a fully self‑contained unit incorporating laundry, kitchen and bathroom facilities, our sleepout builders ensure your project is warm, Healthy Homes and Building Code compliant, and built to last. We’ve delivered sleepouts across Auckland, the Hibiscus Coast, and the North Shore, helping homeowners create practical new spaces with ease.


Renovation Builders for Full Home Renovation & Building Extensions
As trusted renovation builders, we offer more than just home extensions, we deliver complete home renovation solutions that modernise and elevate your entire property. Our team combines the skills of expert home extension builders, house extension builders, and structural specialists to create cohesive, beautifully finished results. Whether you’re updating outdated rooms, reconfiguring layouts, or integrating new building extensions, we ensure every detail aligns with your vision. From kitchens and bathrooms to full‑scale transformations, our renovation builders help Auckland homeowners achieve stunning, long‑lasting results.
Home Extension Cost & House Extension Cost Explained Clearly
Understanding home extension cost and house extension cost is essential when planning your project. We provide clear, upfront pricing so you know exactly what to expect. Whether you’re considering building extensions, a second storey extension, a garage conversion, or a custom sleepout, we guide you through every cost consideration. Our team ensures your home extension cost aligns with your budget, is delivered on time while maintaining the highest quality. With extensive experience across Auckland, the North Shore, and the Hibiscus Coast, we help homeowners make informed decisions about their house extension cost and long‑term investment. For cost effective home extension ideas for growing families, read our blog.
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Expand your living space with the expert house extension services of West & Sons Construction. Give us a call today to discover how our experienced team of extension builders can transform your home to better suit your needs and lifestyle. Whether you're looking to add extra bedrooms, create a home office, or build a separate living area, we’re the trusted choice for house extensions in Auckland.
Frequently Asked Questions
Our competitive and transparent pricing means you know exactly what to expect, no hidden costs. We also supply and project manage all required trades, including tiling, plumbing, electrical, and more, so you don’t have to worry about coordinating contractors or managing timelines. We take care of the details, so you can focus on the big picture.
Most house extension cost estimates start with a detailed site assessment to understand what’s needed. Whether you’re planning building extensions, a second storey extension, or a garage conversion, we provide transparent pricing so you know exactly what to expect. Our team specialises in delivering high‑quality home extensions that stay on budget while maximising long‑term value.
Contact Us
Ready to transform your property? Contact us today to schedule a consultation. Our friendly and knowledgeable team is here to answer any questions and arrange a detailed quote.
+64 21 595 479
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