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ABN 34 620 937 019

Table of Contents

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Timber, Composite, Steel & Concrete Stairs and Staircases

Looking for quality timber stairs in Sydney? As a father-and-son team, we design and build custom timber stairs across Sydney, Wollongong and the Southern Highlands — from a few front steps to a full outdoor staircase that ties your deck and garden together. We’ll talk you through the right timber for your home, handle the council approvals, and build stairs that look right and last. No pushy sales — just honest advice from people who’ll treat your place like our own.”

External Staircase Regulations in Sydney

Every external staircase we build is designed to meet the relevant Australian Standards and the National Construction Code (NCC), so your stairs are safe, compliant, and ready for certification. Getting the geometry right isn’t just a box-ticking exercise — it’s what makes a staircase feel comfortable and secure underfoot for the whole family. Here’s a plain-English overview of what governs outdoor stairs on a typical Sydney home.

Step dimensions (rise and going)

For residential stairs, the NCC sets consistent limits so every step feels the same as you climb:

Risers (the height of each step): between 115mm and 190mm
Goings (the depth of each tread): between 240mm and 355mm
The rise-and-going relationship: twice the riser plus the going (2R + G) must fall between 550mm and 700mm
Consistency: risers and goings must stay uniform throughout a flight, so there are no surprise steps
Flights: a maximum of 18 risers in a single flight before a landing, and at least two risers per flight

Treads, nosings and gaps

Treads must have a slip-resistant finish or a non-slip strip at the nosing — important for Sydney’s wet weather
Any gap between treads or risers must not allow a 125mm sphere to pass through, which protects young children

Balustrades and handrails

Wherever there’s a fall, the stairs need protection:

A balustrade is required wherever the drop is more than 1 metre
Balustrade height must be at least 865mm measured above the stair nosings, and at least 1 metre alongside landings, decks and balconies
Openings in the balustrade must not allow a 125mm sphere to pass through
Where the drop exceeds 4 metres, the design must avoid climbable elements in the 150mm–760mm zone
A handrail is required to at least one side of the flight, set between 865mm and 1 metre above the nosings

Council approval

Depending on height, location and your property, an external staircase may fall under exempt development, qualify for a Complying Development Certificate, or require a Development Application through your local council — and heritage listings or bushfire zones can change the requirements. As part of our design service, we’ll let you know which pathway applies to your project and make sure everything is documented correctly for sign-off.

The figures above are a general guide to current NSW residential requirements and can vary by project, building class and council. Your final design is always confirmed against the standards applying to your specific site.

With UrbanArch, compliance is handled for you from the very first sketch — so you get a staircase that’s beautiful, built to last, and built to code.

Select a staircase type below to jump straight to it

Composite staircase (Trex deck boards)

Composite staircase (Timbertech Azek deck boards)

Concrete staircase

Mono stringer staircase

Timber staircase

Galvanized steel staircase with aluminium treads and powder coated handrails

Steps and stairs are a smart way to connect your deck to the rest of your outdoor area. At UrbanArch, we custom design and build external staircases that are both functional and visually appealing:

Custom-designed staircases to suit your deck and landscape
Enhance access between levels and outdoor zones
Crafted using quality materials like timber, composite, or concrete
Ideal for sloped blocks or split-level properties
Adds style and value to your Sydney home
Built for safety, durability, and visual appeal

Choose UrbanArch for expertly built stairs that elevate both form and function.

Looking to connect your deck, patio, or garden with a stylish, durable staircase? Our custom external staircases in Sydney are built with care to suit your space, match your home’s style, and meet all local building standards. Whether you prefer the warmth of timber, the sleek look of steel, or the low-maintenance appeal of composite, we’ll help you choose the right material for your needs. Ideal for both homes and commercial spaces, every staircase we build is made to last—and made for you. Get in touch for expert design and installation across Sydney.

If you’re planning to upgrade your outdoor space, we build custom outdoor stairs across Sydney—perfect for patios, decks, and backyards. Our experienced staircase builders specialise in a wide range of styles, including external timber stairs, metal stairs, and sleek mono stringer staircases. From classic wooden stairs to modern designer staircases, we create solutions that are built to last and tailored to your home. Based in Sydney, we work with homeowners, builders, and architects to deliver high-quality custom stairs, complete with handrails and finishes that suit any design. Whether you’re searching for outdoor stair builders near me, reliable stair manufacturers, or help with staircase design, we make the process simple. Get in touch with one of Sydney’s trusted teams for beautiful, functional external stairs that enhance your outdoor living.steel

Click on the images for a better view

A Trex Composite decking staircase with Ultralox handrails

Oyster Bay project

This outdoor staircase in Sydney is built using premium Trex composite decking boards and Ultralox powder-coated aluminium handrails, offering a stylish and long-lasting solution for external access. Designed to withstand the city’s tough climate, these outdoor stairs resist fading, warping, and splintering—making them perfect for decks, gardens, or multi-level outdoor areas. The slip-resistant treads and concealed fixings provide a clean, safe, and low-maintenance finish, ideal for homeowners looking for durable and modern outdoor stairs in Sydney.

Azek Vintage deckboards on a timber substructure with Ultralox handrails

Wahroonga project

Upgrade your outdoor area with a stylish external staircase built to last in Sydney’s tough climate. Featuring a strong timber substructure and finished with AZEK Vintage Collection® deck boards on the treads and risers, you get the beauty of natural timber without the ongoing maintenance. These premium composite boards resist fading, warping, and moisture—making them ideal for Sydney homes. Topped off with a modern powder-coated Ultralox aluminium handrail, this staircase combines safety, durability, and sleek design for any deck, patio, or garden space.

Click on the images for a better view

A Concrete Staircase with Tiled treads and timber handrail

Earlwood project

A concrete or tiled external staircase in Sydney offers a strong, stylish, and long-lasting solution for outdoor access. Perfect for homes and commercial properties, these staircases provide excellent durability, weather resistance, and low maintenance. With a wide range of tile finishes available, a tiled concrete staircase can be customised to match any exterior design while withstanding Sydney’s changing climate.

Click on the images for a better view

A Mono rail stringer with Ironbark treads and platform and a glass balustrade

Castlecrag project

An external mono rail stringer staircase in Sydney offers a clean, minimalist look with strong structural support. Designed with a single central beam, it creates an open, floating appearance that enhances modern outdoor areas. Perfect for connecting decks, patios, or upper levels, mono stringer stairs are built with durable materials like steel and hardwood treads to withstand Sydney’s weather while adding architectural appeal.

Click on the images for a better view

A Blackbutt timber staircase with Blackbutt handrails and stainless steel wire balustrade

Gladesville project

This Blackbutt timber staircase in Gladesville is one of our most popular timber stairs builds across Sydney. Known for its strength and warm, golden tones, Blackbutt timber is ideal for Australian conditions, providing natural resistance to termites and decay. Paired with sleek stainless steel wire, this staircase design creates a modern, open look that enhances airflow and visibility—perfect for decks, gardens, or elevated areas. For those seeking a stylish, long-lasting, and low-maintenance staircase, a Blackbutt and stainless steel wire combination is a top choice in Sydney’s outdoor living spaces.

A Galvanized steel staircase with aluminium treads and powder coated handrails

Thornleigh project

This external staircase combines durability with modern design, featuring robust galvanized steel stringers for structural strength, lightweight aluminium treads for a sleek, rust-resistant finish, and powder-coated Ultralox aluminium handrails for a clean, low-maintenance look. Ideal for outdoor use, it offers long-lasting performance with minimal upkeep.

Some other steps and stairs

Steps and stairs are the ideal way to transition your deck to other areas of your property, enhancing both function and flow. At UrbanArch, we design and build custom external staircases that not only provide safe and seamless foot traffic but also add a stylish architectural touch to your outdoor space. As experienced custom stair builders in Sydney, we know every project is unique—longer stair runs can create an elegant, grand feel, while wider steps improve accessibility for children and older family members. The right staircase design can dramatically enhance the look of your deck or balcony and increase your property’s value. Choose UrbanArch for stunning, tailored stair solutions built to last.

How to choose the best custom stairs builder

20Don’t risk your investment with a sub-standard stair builder. At UrbanArch, we bring over 12 years of experience delivering high-quality custom staircases across Sydney. Here’s why homeowners and developers trust us:

Over 20 years of local experience in custom stair design and construction
Safe and functional designs that suit families and high-traffic areas
High-quality, durable materials built to last in all weather conditions
Visually striking staircases that enhance the look of any outdoor space
Tailored solutions to suit any property size, slope, or layout
End-to-end service from concept to completion

With UrbanArch, your staircase won’t just be functional—it’ll become a standout feature that adds value and style to your home.

For all projects relating to steps and stairs, you need look no further than UrbanArch. Whatever the size or landscaping layout of your property, the stairs you’re able to build are limited only by your imagination.

Sydney Staircase Builders

UrbanArch are locally trusted custom stair builders in Sydney and have been privileged to work on some of the amazing projects that you can see featured on this page. You can see that we work with only premium timber materials that blend with the aesthetics of the home and natural environment of the property.

If you’re ready to take the next step, then get in touch with us via phone or email to organise a full consultation and quote. We have a thorough design service that is free of charge, ensuring you’re 100% on how the final staircase will look before work commences.

We’re always happy to help with any questions or custom design problems that you may be facing, so head to the contact us page and let’s start the process of building your dream set of custom stairs.