A modern extension with a balance of old and new.

Silver Back is a confident balance of old and new — a tightly resolved renovation and extension to a semi-detached Marrickville terrace that pairs industrial toughness with unexpected warmth.

The project involved a full refurbishment of the existing home and a bold two-storey rear addition wrapped in corrugated metal, charred timber and zinc. From the laneway, the curved metal form both nods to its surroundings and stands deliberately apart. Inside, that hard exterior gives way to a soft, layered interior: polished concrete underfoot, warm boxwood joinery, engineered timber floors and a sculptural steel spiral stair stitching three levels together.

We navigated complex build challenges, from resolving rising damp in retained masonry to precision-aligning the spiral stair across multiple floors. A retained rear granny flat was carefully reworked to align with the new architecture — delivering a cost-effective compromise without diluting the design intent.

The result is a robust, tactile home that connects seamlessly between old and new, function and form — built to last, and built with intent.

2022
Marrickville
<$1m
125 sqm
Finalist NSW Master Builders Excellence in Housing Awards 2023
House Alterations & Addition $900,000 – $1 million category
Shortlisted Australian Institute of Architects ( NSW Chapter)
Winner Colorbond Award for Steel Architecture
Designed by GSB Architecture, the Silver Back project took the existing terrace house footprint and expanded it into a two-story family home clad entirely in corrugated sheet metal. In drastic contrast to its neighbours, the new metal box conceals a warm, open interior with a spiral stair bridging the old building with the new..

I am writing to provide a reference for Green Anvi Co, who recently completed the construction of our family home in Marrickville. Sam and his team were a pleasure to work with throughout the process.

Sam is an incredibly detail-oriented person who always goes above and beyond to ensure that the job is done right. He takes the time to ensure that every detail is accounted for and that the job is done to the highest standard. He was always willing to put in extra effort and his communication and Transparency throughout the project were at the highest level possible

Being a Terrace house in the inner west we always wanted our neighbours to be considered and respected in this process. Sam’s team kept all our neighbours updated with the build process with minimal disruption to them. Green Anvil Co was incredibly accommodating to their needs and went to every length possible to support them.

We could not be happier with the finished product of our House. Everything was thought of and considered during the process. We felt at total ease throughout the duration of the build.

We highly recommend Sam and his incredible team to anyone looking to build an outstanding house.

Private Client