
House Extensions Kogarah Bay
Professional home extensions for Kogarah Bay homeowners, delivered by a licensed Sydney builder with carpentry in house.
NSW Licence No. 380408C · Fully insured · St George and Georges River
Fast quote
Talk to a Kogarah Bay builder
Send the details and we will arrange a site visit in Kogarah Bay and price the work in writing.
Home Extensions in Kogarah Bay
Home Extensions done properly
If you are weighing up extending in Kogarah Bay rather than moving, ORT Construction Group can take the project from the existing home through demolition, structural works, framing, lock up and fit out to completion, with one team responsible for the result.
From first site visit to handover on a Kogarah Bay extension you deal with the people running the build, not a call centre. Progress, variations and next steps are confirmed in writing as the job moves.
Where we can help
Home Extensions services for Kogarah Bay homes
Extension types
- Ground floor extensions
- Rear extensions
- Side extensions
- Bedroom and bathroom additions
- Kitchen and living area extensions
Structural works
- Structural alterations to the existing home
- New wall, floor and roof framing
- New openings and load bearing modifications
- Footings, slabs and subfloor works
- Tie in and make good to existing structure
Living and outdoor space
- Additional living areas
- Indoor and outdoor living extensions
- Alfresco and covered outdoor areas
- Decks and paved transitions
- New window and door openings for light and access
Construction coordination
- Complete construction coordination
- Extension carpentry in house
- Trade sequencing and site management
- Lock up, fit out and finishing
- Certifier and consultant liaison
Why ORT Construction Group
Working with a builder, not a middleman
Written quotes
Scope, allowances and exclusions are set out in writing so you can compare quotes on the same basis.
Over 25 years of experience
Decades of residential building across renovations, extensions, carpentry and concrete works.
Licensed and insured
ORT Construction Group holds NSW Licence No. 380408C and carries the insurances required for residential building work in NSW.



Process
From enquiry to handover
- 1
Site visit and brief
We walk the home with you, discuss what the extension needs to achieve, and look at the existing structure.
- 2
Scope and quote
You receive a written scope and price covering structural works, framing, fit out and coordination.
- 3
Documentation
We work alongside your designer, engineer and certifier, or point you to the approvals your project needs.
- 4
Construction
Demolition, structure, framing, lock up and fit out are delivered by one team on an agreed program.
- 5
Completion
We finish, clean down, walk the works with you and close out any items before handover.
Questions
Home Extensions in Kogarah Bay, answered
Do you do extensions and the internal renovation together?
Yes. Many Kogarah Bay projects combine an extension with renovating the existing rooms so the finished home reads as one space rather than old and new.
Can you extend to create indoor outdoor living?
Yes. Wide openings, covered alfresco areas and level transitions between inside and out are common parts of the extensions we build.
How long does a home extension take?
It depends on size and structure. A modest ground floor extension is typically a matter of months on site; we give an indicative program with the quote and update it as the build progresses.
What does an extension quote include?
A written scope for the Kogarah Bay works, the structural and framing components, allowances where selections are not final, and clear exclusions so you can compare fairly.
Related services
Other work we do in Kogarah Bay
We also service surrounding areas
Home Extensions near Kogarah Bay
All St George and Georges River suburbsNext step
Talk to a Kogarah Bay builder
Send through the details of your Kogarah Bay project and we will arrange a site visit, confirm the scope and put a written quote together.
Call 0411 586 136