
Extension Builder Mascot
Professional home extensions for Mascot homeowners, delivered by a licensed Sydney builder with carpentry in house.
NSW Licence No. 380408C · Fully insured · Eastern Suburbs
Fast quote
Get a written quote for your Mascot job
Send the details and we will arrange a site visit in Mascot and price the work in writing.
Home Extensions in Mascot
Home Extensions done properly
An extension in Mascot lives or dies on the join between old and new. ORT Construction Group handles the structural work, the framing and the tie in detailing in house, so the new section reads as part of the home instead of an addition bolted on the back.
Because extensions expose existing structure, surprises happen. On Mascot projects we plan the sequence early, open up carefully, and tell you what we have found before it turns into a cost surprise.
Services included
Home Extensions services for Mascot homes
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
Extension types
- Ground floor extensions
- Rear extensions
- Side extensions
- Bedroom and bathroom additions
- Kitchen and living area extensions
Why ORT Construction Group
Working with a builder, not a middleman
Carpentry in house
Structural and finishing carpentry is done by our own team, which keeps set out accurate and the program moving.
One point of contact
You deal with the people running the build, not a sales team who hand the job over.
Tidy sites
Sites are cleaned down daily and access is agreed with you before work starts.



Process
How we run the job
- 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 Mascot, answered
What does an extension quote include?
A written scope for the Mascot works, the structural and framing components, allowances where selections are not final, and clear exclusions so you can compare fairly.
Can we stay in the house during a Mascot extension?
Often yes, depending on scope. Many Mascot extensions are built while the family stays in the existing part of the home, with the work zone separated and access managed.
Is the carpentry done by your own team?
Yes. Framing, structural alterations and fit out carpentry are done in house, which keeps set out accurate and keeps the program moving.
Do you handle approvals for extensions in Mascot?
We work alongside your designer, engineer and certifier and can advise what your project needs. We coordinate the construction side so the documentation and the build line up.
Do you do extensions and the internal renovation together?
Yes. Many Mascot projects combine an extension with renovating the existing rooms so the finished home reads as one space rather than old and new.
Next step
Get a written quote for your Mascot job
Send through the details of your Mascot project and we will arrange a site visit, confirm the scope and put a written quote together.
Call 0411 586 136