One Eleven

Honouring the Detail.

One Eleven is a Melbourne based construction company delivering commercial and domestic building projects.

With over 20 years combined experience, our team specialise in bespoke builds including complex, large scale projects in the hospitality, commercial fitout and refurbishment sectors along with holding the necessary expertise to undertake architecturally designed single and multi-residential developments.

Together with our affiliated consultants and carefully selected sub trades, we take pride in completing projects of the highest calibre, on time and within budget.

Focused on delivering superior service, our client engagement ensures their input is valued and welcomed from concept to completion.

Our Team

Together, Maree Marvelli and Spiro Costa work cohesively to deliver high-quality projects across various sectors.

Maree is focused on project management, with more than 11 years of experience in the industry. Her proven ability to manage complex projects from conception to completion ensures adherence to budget, timeline, and quality standards.


Spiro is focused on site delivery. Having started as a carpenter 18 years ago, his technical knowledge and expertise ensure that details are honored and high-quality projects are delivered.

Their partnership enhances One Eleven’s capability to provide innovative solutions, streamline project delivery, and ensure client satisfaction.