Restoration - Fitout - Refurbishment

Osta building & prefab concepts specialise in building restoration, refurbishment and fitout of residential homes and commercial buildings.

Committed to high level building practices discussing best building methods, procedures and budgets to meet clients requirements ensures a smooth process with all safety  and insurances in place

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Prefab solutions

At our factory we supply prefab solutions on difficult projects with owners access limited concerns disrupting possible tenants

Our solution is to prefab in sections or kit form   


Our Team

Our team & family of licensed contractors deliver quality finishes and peace of mind to ensure an efficient  and professional building process with insurances and safe work method procedures in place.



Our Safe work method procedures also play a large role to ensure safety to all workers and protecting client assets to ensure a smooth building process which leads to quality building to meet tougher building regulations imposed to meet required standards               



To ensure the building works continue smoothly with limited disruptions we provide sketch detail to architects or clients for approval too fast track any speed humps and disruptions that may occur in new works and existing building restoration, fitout and refurbishments


Residential Restoration

Major Renovation at 18 Weaver street Ryde

Originally a typical single level old weatherboard home 120 m2 with a small front verandah partially falling down transformed to a period weather board cottage extended 12 metres with a new upper level with existing verandah demolished and new veandahs added to 3 sides and a double garage.

The work carried was a testament to traditional building methods and detail finishes

  • Prefabricated posts, beams and decking to verandah
  • Continued progress in varied weather conditions

Pacific Street Watsons Bay

Work was carried out on the home for one of Australians major developers

The original boat house only had a few timbers remaining to walls and with the wharf having significant decayed to major support beams it was in need of repair before work could commence to resurrect what remained of the boat house

It was completely reconstructed and re-strengthening of the wharf timbers which was carried out on water off barges and land due to the difficult access. The final outcome to the boathouse and the boardwalk formed a unique getaway and access to the Sydney Harbour Foreshore for the residence

Majority of work was carried out off site and prefabricated in kit form due to very difficult access and to allow ease of construction limiting any down time and reducing safety concerns   

2 bedroom Granny Flat

10 A Coffey street Ermington

The Granny flat was an attached build which rapped around the existing home requiring fire rating measures applied.

Majority of the granny flat due to angled boundary perimeter walls and attached to the existing building was prefabricated off site in kit form. 



Fitouts & Refurbishments

The Oxford Shop

Macquarie Shopping Centre

In conjunction with the owner AMP of Macquarie shopping centre and the Oxford Shop we were put to the test with a tight build programme to completely strip the existing glass shop front and all internal walls, ceilings and strip tiled floors to 2 levels.

The refurbishment and fitout was carried out in 4 weeks

Daley Male

An iconic menswear store on Oxford Street in Darlinghust

Work was carried out for Daley Male and Sydney Council the owner of the building to link both stores into one.

Large sections of brickwork were removed with fire rated beams installed to carry the existing 3 level office and residential structure above.

This opened up the retail premises making it one of the largest and inviting shops on Oxford Street.

New Foyers & Refurbishments

To existing for the Toga Group of Companies

The apartment foyers and lobbies are to Chatswood Apartments, Herring road Macquarie Park, West Ryde Shopping Centre and Hurstville apartments

The detail and finishes to each complex vary from traditional stucco paint finish to create a marble effect to walls and doors to laser cut privacy screens and more traditional polished Blackbutt & Spotted Gum vertical timber batten walls.

All polished timber screening in prefabricated off site in our factory.

31 Auburn rd, Auburn

For the Scarf Family

In progress with conversion of retail space into 2 shops and office with rear lane access.

Due to major water leaks the roof framing and metal sheeting is to be removed raised with new metal roofing and flashing to create sufficient fall and meet BCA standards 


Restoration - Fitout - Refurbishment

  • Residential
  • Heritage
  • Shops & Office Fitouts
  • Restoration & Refurbishment
  • Modular Concepts

We Offer

  • Partner in the process
  • Adding value
  • Discuss Process
  • Alternate Solutions
  • Safe procedures & quality assurance
  • Quality contractors & suppliers