Our team offers structural engineering services to homeowners, architects, commercial clients and developers in the Inner West and Inner-City suburbs of Sydney

Based in Lewisham, our engineering team works extensively in the Inner West and Inner-City suburbs of Sydney. We provide structural engineering services to homeowners, architects, commercial clients and developers for a variety of projects. From large and big budget projects to simple and smaller sized briefs, we are capable and experienced in providing expert engineering services.

New dwellings and buildings
Alterations and additions
Footings, piers and slabs
Swimming pools
Awnings
Wall openings/wall removal
Steel structures
Timber Structures
Reinforced concrete structures
Retaining walls
Driveways
Structural inspections and certification

Based in Lewisham, Ross Engineers provides expert residential and commercial structural engineering services across Sydney’s Inner West, Eastern Suburbs and metropolitan Sydney. Our team works on a wide variety of projects, including houses, semi-detached homes, secondary dwellings, dual occupancies, duplexes, granny flats, townhouses, terraces, residential flat buildings, basements, and attic conversions, as well as multi-storey commercial developments. We deliver innovative, practical, and cost-efficient solutions for new builds, alterations, additions, footings, piers, slabs, swimming pools, wall openings, steel, timber, and reinforced concrete structures. Our services also include retaining walls, driveways, structural inspections, and certification. Whether you need a residential structural engineer or a commercial structural engineer, Ross Engineers provides reliable guidance and tailored solutions to meet your project needs. We proudly service all Inner West suburbs including Abbotsford, Annandale, Ashbury, Ashfield, Balmain, Balmain East, Belfield, Birchgrove, Breakfast Point, Burwood, Burwood Heights, Burwood North, Cabarita, Campsie, Canada Bay, Canterbury, Chiswick, Clemton Park, Concord, Concord West, Croydon, Croydon Park, Drummoyne, Dulwich Hill, Earlwood, Enfield, Enfield South, Five Dock, Haberfield, Homebush, Homebush South, Homebush West, Hurlstone Park, Leichhardt, Lewisham, Liberty Grove, Lilyfield, Marrickville, Marrickville Metro, Marrickville South, Mortlake, North Strathfield, Petersham, Petersham North, Rhodes, Rodd Point, Rozelle, Russell Lea, Stanmore, Strathfield, Strathfield South, Summer Hill, and Wareemba. From heritage terrace renovations and penthouse additions to modern townhouses and residential apartment buildings, we combine technical expertise with architectural sensitivity to ensure safe, compliant, and structurally sound outcomes. Contact Ross Engineers today to discuss your project and work with our trusted structural engineers to bring your vision to life.

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Frequently Asked Questions

What are the main architectural house styles across Sydney's inner west?

Sydney's inner west blends dense Victorian terrace housing with distinct pockets of later development. Victorian terraces (1840s-1890s) - narrow, two-storey, with iron lace and shared walls, generally plainer than their eastern suburbs counterparts - define Glebe, Newtown, and Annandale. Federation homes (1890s-1915) are strongest in Haberfield, Australia's first purpose-built "Federation Garden Suburb" and now heritage-protected, with further examples in Ashfield, Croydon, and Petersham; these tend to be freestanding rather than attached, with red brick, terracotta roofs, leadlight windows, and deep verandahs. The 1920s-1930s brought Californian Bungalows to Strathfield, Concord, Croydon, and parts of Ashfield, while simple post-war brick bungalows filled in Marrickville, Dulwich Hill, and Lewisham through the 1940s-60s. More recently, the area's industrial past has been reshaped through the conversion of warehouses and industrial buildings into loft-style residences in Erskineville, St Peters, Camperdown, and Rozelle, alongside contemporary architect-designed infill squeezed between terraces under local heritage overlays.

What structural issues are common in Sydney’s Victorian-era homes?

Victorian-era homes (roughly 1840s to the 1890s) often have sandstone block or clay brick footings laid without reinforcement or consistent depth, which can lead to foundation movement and cracking over time. Original masonry walls typically have no damp-proof course or cavity, making rising damp common, and lime mortar can deteriorate significantly after 100 or more years. Many of these homes - particularly terraces - share party walls with neighbouring properties, so any structural change also needs to account for the shared wall and may need to consider the impact on neighbouring properties.

What structural issues are common in Sydney’s Federation-era homes?

Federation-era homes (1890s to about 1915) can have shallow, unreinforced footings that can lead to foundation movement and cracking. Original walls can suffer from rising damp and mortar deterioration, and later additions are often poorly tied into the original structure, causing uneven settlement over time. Because of this, an engineer typically needs to assess the existing structure's condition before designing any renovation or new addition work.

Do terrace houses need special structural engineering considerations?

Yes. Terrace houses typically share party walls with neighbouring properties, so any structural work - removing a wall, adding a rear extension, or cutting into a floor - must account for how the change affects the shared wall and the adjoining building. Engineers also need to consider the age of the original construction, which may mean sandstock brick, unreinforced masonry and shallower footings that behave differently to modern materials and construction techniques under load.

Do semi-detached homes have the same structural requirements as terraces?

Broadly yes - semis share a party wall with one neighbour and raise similar considerations around shared structure, though they're often on slightly wider blocks than a classic terrace, which can give more flexibility for extensions and internal reconfiguration.

What's involved in extending a terrace house at the rear?

Rear extensions on terraces usually require new footings, engineering for how the new roof structure connects to the existing one, and consideration of drainage and stormwater given the tight block widths common in suburbs like Newtown, Balmain and Leichhardt.

Do I need an engineer to convert a terrace's internal layout for open plan living?

Almost always. Terraces were built with narrow, load-bearing cross-walls dividing rooms, so making the ground floor open plan typically means removing or altering several load-bearing walls at once, requiring a coordinated structural design.

What's involved in a second storey addition to a single-storey terrace or cottage?

The engineer needs to assess whether the existing walls and footings - often original 19th-century construction - can support an added level, or whether they need reinforcement first. Party wall height and fire separation requirements also come into play.

Do I need a structural engineer for a basement or lower-ground level addition in a terrace or semi?

Yes - excavating below an existing terrace or semi requires careful engineering for both the existing building and to avoid affecting neighbouring foundations, particularly given how close these homes typically sit to their boundaries.

What about heritage-listed homes in the Inner West or Eastern Suburbs - does that change the engineering?

Heritage listing itself is a planning and design matter rather than a structural engineering one, but heritage homes are often older and more likely to have original, non-standard construction that needs careful assessment. Engineers working on these properties typically coordinate closely with architects and heritage consultants to make sure structural changes are compatible with retained fabric.