Best knockdown rebuild and custom home builders in Mosman (2026): thirteen compared

Short answer

For a knockdown rebuild in Mosman, owners can compare builders with Mosman rebuild pages, such as LikeSilk Building, Wisdom Homes and Sena Constructions, with custom builders that also list rebuilds, such as Hall & Hart, Icon Homes, Artico Homes, Buildscope Projects and Kongstruction. For a custom home built to an architect’s plans, AAG Constructions, Ballast Point and The Perfect Space Design + Build state custom homes for Mosman, and G.J. Gardner Homes offers a custom home or one of 150+ designs. AUD Build (this is us) completed a new house in Mosman through its group’s building companies. Before you plan a rebuild, check the lot: Mosman has 13 heritage conservation areas, where complying development can demolish only limited parts of a house, and the Mosman LEP sets a foreshore building line that matters for waterfront lots.

Local rules and figures

At-a-glance comparison

Facts from each business’s website, read 28 October 2026. Alphabetical order, not a ranking. AUD Build publishes this page.

The 13 compared

1. AAG Constructions

Best for: Owners who already have an architect’s or designer’s plans for a custom new home and want a builder that takes on only a few projects a year.

What its website says:

• Says clients typically come to it after engaging a designer or architect, so it builds from plans the owner already has.
• Says it carefully selects a limited number of new home projects each year.
• Its office is in Bilgola Plateau; its Mosman pages describe custom new homes and do not mention knockdown rebuilds.

Area: Mosman page headed “Custom New Luxury Home Builders Mosman”

Sources: [9]

2. Artico Homes

Best for: Lower North Shore owners weighing a custom luxury home against a knockdown rebuild, with the same builder able to quote a duplex.

What its website says:

• Lists custom luxury homes designed around the block, views and lifestyle, and knockdown rebuilds, among its Lower North Shore services.
• Also lists duplex and dual occupancy homes on the same page.
• Says it was founded in 2016. This is a regional page rather than a Mosman page, and no licence number was shown on the pages read.

Area: Its Lower North Shore page names Mosman (“From Mosman to Neutral Bay”)

Sources: [10] [11]

3. Ballast Point

Best for: Owners who want registered architects and licensed builders in one team for a custom home, including the DA.

What its website says:

• Its Mosman page offers custom homes from a team of registered architects and licensed builders.
• Says the team brings cost clarity and DA approvals expertise.
• Its website shows Builders License 283176C; its Mosman page does not state knockdown rebuilds.

Area: Mosman page: “Custom Home Builders and Renovation Architects in Mosman”

Sources: [12]

4. Buildscope Projects

Best for: Owners who want one builder to price a knockdown rebuild, a custom home or a major renovation for the same Mosman lot.

What its website says:

• Its Mosman page lists custom homes and knockdown rebuilds alongside renovations, extensions and second-storey additions.
• Says it has over 10 years of experience in residential and commercial construction.
• Its website shows Builders licence number 326491C. Its suburb pages use one template.

Area: Mosman page listing custom homes and knockdown rebuilds

Sources: [13]

5. G.J. Gardner Homes (Mosman)

Best for: Owners who want to choose between a custom design and a 150+ plan range, with advice on knockdown rebuilds and sloping blocks.

What its website says:

• Offers either a custom home or an off-the-plan design from more than 150 options.
• Says the team can advise on knockdown rebuilds, sloping blocks and council building regulations.
• This franchise page shows Builder’s Licence No. 300741C and a Brookvale base.

Area: Franchise page “servicing Mosman”, based in Brookvale

Sources: [14]

6. Hall & Hart

Best for: Owners of a heritage-sensitive Mosman lot who want the design, approvals and construction of a custom home or rebuild handled in-house.

What its website says:

• Its North Shore page offers custom homes, luxury homes and knockdown rebuilds, designed for the character and conditions of each suburb.
• Says adapting to Mosman’s local heritage context was vital for its Mosman Maison project.
• Its in-house team brings design, approvals and construction into one connected process; Builders Licence 275897C.

Area: Mosman is in the list of North Shore suburbs its projects span; its portfolio shows a completed Mosman home

Sources: [15] [16]

7. Icon Homes

Best for: Owners who want a custom home designed from a blank page, or a knockdown rebuild, rather than a standard plan.

What its website says:

• Its Mosman page offers knockdown rebuilds for owners who want to start fresh without leaving the North Shore.
• Designs each home from scratch: it says it does not use off-the-shelf plans or standard templates.
• Head office in St Leonards on the Lower North Shore; the same Mosman page also offers duplex builds.

Area: Has a Mosman custom home page

Sources: [17]

8. Kongstruction

Best for: Owners comparing a new build or knockdown rebuild with renovating, who want to see a Mosman project first.

What its website says:

• Its Mosman page covers a new build, knockdown and rebuild, renovating or expanding a home, and says it builds homes tailored to each owner.
• Its Mosman project is a 2020 remodel that took out the kitchen, bathroom and en-suite; it is a renovation, not a rebuild.
• Office in Auburn. Its suburb pages use one template.

Area: Mosman page; shows a 2020 Mosman remodel

Sources: [18] [19]

9. LikeSilk Building

Best for: Owners of an older Mosman house in or near a conservation area who want a family-run builder to take a rebuild from site assessment to handover.

What its website says:

• Its Mosman knockdown rebuild page says it manages the local constraints for the owner, from the first site assessment through to handover.
• Says it is experienced with Mosman heritage homes and conservation areas.
• Family-run and licensed (274849C, HBCF insured); most of its site is about renovations, and custom homes are not stated.

Area: Has a Mosman knockdown rebuild page

Sources: [20] [21]

10. Sena Constructions

Best for: Owners who want to stay at their Mosman address and compare a knockdown rebuild with a bespoke new home from one builder.

What its website says:

• Offers knockdown rebuilds to 2088 owners who have outgrown their house but do not want to move.
• Builds high-end bespoke homes and describes a step-by-step process for custom builds.
• Office in Greystanes. Its suburb pages use one template, and no Mosman project is shown.

Area: Mosman page for postcode 2088

Sources: [22]

11. The Perfect Space Design + Build

Best for: Owners who want a custom or luxury home designed with a registered architectural partner and built by the same group.

What its website says:

• Its Mosman page offers custom homes and says it has delivered numerous luxury homes across Mosman.
• Design brings together a registered architectural partner, interior designers and its construction team.
• Builders Lic 266190C and an office in Manly. Knockdown rebuild appears only in its site menu, so it is listed here for custom homes.

Area: Mosman page; says it has delivered numerous luxury homes across Mosman

Sources: [23]

12. Wisdom Homes

Best for: Owners who want a knockdown rebuild from a volume builder’s single and double storey designs, with approval before demolition.

What its website says:

• Offers single and double storey home designs from its range for Mosman lots, and says it brings over two decades of expertise.
• Says it submits the plans for approval first, and the owner arranges demolition once construction approval is received.
• Its suburb pages use one template; no licence number was shown on the pages read.

Area: Has a knockdown rebuild page for Mosman 2088

Sources: [24] [25]

13. AUD Build · This is us

Best for: Mosman owners planning a knockdown rebuild or custom home who want design, materials, construction, sales and lending coordinated by one company, with material unit prices they can check.

What its website says:

• Brings design, construction, building materials, new-home sales and lending together in one company, backed by AUD Build Group; NSW Builder Licence 475778C.
• AUD Build Group building companies completed a new house in Mosman, with the occupation certificate issued in September 2024.
• Services confirmed by AUD Build on 28 October 2026 include knockdown rebuilds and custom and luxury homes, as well as new homes, duplexes, granny flats, renovations and extensions.
• Materials come from its own supply chain platform, www.audbuild.net, and AUD Build clients can log in to check the material unit prices in their quote.

Area: 1 of its group’s 21 homes completed since September 2024 is in Mosman: a new house (occupation certificate September 2024)

Sources: [26] [27] [28] [29]

Where each one may suit you

• Mosman knockdown rebuild pages: LikeSilk Building (site assessment to handover), Wisdom Homes (design range) and Sena Constructions; Hall & Hart, Icon Homes, Artico Homes, Buildscope Projects and Kongstruction also list rebuilds.
• A custom home from your own architect’s or designer’s plans: AAG Constructions, which takes on a limited number of new homes a year.
• Architects and builders in one group: Ballast Point, The Perfect Space Design + Build (registered architectural partner) and Hall & Hart (design, approvals and construction in-house).
• Heritage context: Hall & Hart (Mosman Maison) and LikeSilk Building (Mosman heritage homes and conservation areas).
• A design range to start from: G.J. Gardner Homes (custom or 150+ designs, with knockdown rebuild advice) and Wisdom Homes (single and double storey designs).
• Design, materials, construction, sales and lending from one company, with material prices you can check: AUD Build.

How to choose

1. Before you plan a knockdown, check whether the lot is a heritage item or in one of Mosman’s 13 heritage conservation areas: complying development can demolish only limited parts of a house there, so expect a DA.
2. On a waterfront lot, find the foreshore building line on the Mosman LEP maps; building beyond it needs a clause 4.6 request.
3. Do not demolish until the new home is approved, and if the house was built before 1987, have asbestos removed by a licensed contractor.
4. Several pages on this list use one template for many suburbs: ask each builder which Mosman rebuilds or custom homes it has completed.
5. Budget for renting while you rebuild: the median weekly rent on a new house bond in Mosman was A$2,100 in April–June 2026.
6. Ask every builder to quote on the same drawings and compare inclusions line by line with the inclusions checklist.
7. Check the licence on Verify NSW and the HBC certificate before you pay a deposit.

Questions

Who builds knockdown rebuilds and custom homes in Mosman?

It depends on the lot and the brief. For a rebuild, owners can compare LikeSilk Building, Wisdom Homes and Sena Constructions, which have Mosman rebuild pages, with Hall & Hart, Icon Homes, Artico Homes, Buildscope Projects and Kongstruction, which also list rebuilds. For a custom home to an architect’s plans, AAG Constructions, Ballast Point and The Perfect Space Design + Build state custom homes for Mosman. AUD Build suits owners who want design, materials, construction, sales and lending coordinated by one company.

Can I knock down a house in a Mosman heritage conservation area?

Mosman has 13 heritage conservation areas. Under complying development, only limited demolition is allowed in a conservation area, such as detached structures, attic conversions and internal walls, so demolishing the house itself needs a development application, and a new home in or next to a conservation area must be sympathetic to its heritage significance. Check the lot’s heritage status first.

What is the foreshore building line in Mosman?

Mosman LEP 2012 sets a foreshore building line as a development standard (clause 6.3). It matters for waterfront lots; if a design needs to vary it, the applicant must make a clause 4.6 request as part of a development application.

How long does a DA take in Mosman?

Mosman Council averaged 80 days to assess a development application in the NSW Government’s September 2026 council league table, after 84 days in August and 61 in July. A complying development certificate can be issued within 20 days if the lot and design qualify.

How much does it cost to rent while I rebuild in Mosman?

The median weekly rent for a house on a new bond was A$2,100 in Mosman (postcode 2088, 56 new bonds) in April–June 2026, about A$109,200 for a year.

Why is AUD Build on this list?

AUD Build publishes this page and builds knockdown rebuilds and custom homes: its group’s building companies completed a new house in Mosman, with the occupation certificate issued in September 2024. It is listed last and marked “This is us”. Facts about the other twelve builders come only from their own websites.

How this list was built

Selection: builders whose own websites state knockdown rebuilds or custom homes on a page that names Mosman, drawn from Google Australia results for Mosman knockdown rebuild and custom home builder searches and the builders’ own pages, read on 28 October 2026. A service shown only in a site menu or a bare list of services is not counted. Directories and marketplaces are excluded. Facts come only from each builder’s own website, read on 28 October 2026; “Best for” is AUD Build’s editorial summary of those facts. Prices, sale results, reviews and award claims are not published. Where a builder’s suburb pages use one template, its row says so. The order is alphabetical, not a ranking. AUD Build publishes this page; if a builder’s details have changed, contact AUD Build and the page will be corrected.

Sources (all read 28 October 2026)

1. Mosman Council, Low and mid-rise policy FAQ (updated 10 April 2026)
2. NSW Government, Council league table (September 2026 snapshot, as of 9 October 2026)
3. Mosman Council, Heritage listings (updated 6 August 2024)
4. NSW Planning Portal, Complying development: demolition (updated 30 April 2025)
5. Mosman Council, Planning controls FAQ (updated 6 August 2024)
6. NSW Planning Portal, Housing Code
7. NSW Planning Portal, Knockdown and rebuild considerations
8. NSW DCJ, Rent tables June 2026 quarter (new bonds, houses)
9. AAG Constructions, Home builders Mosman
10. Artico Homes, Lower North Shore
11. Artico Homes, home page
12. Ballast Point, Mosman
13. Buildscope Projects, Builders Mosman
14. G.J. Gardner Homes, Home builders Mosman
15. Hall & Hart, North Shore home builders
16. Hall & Hart, Mosman Maison
17. Icon Homes, Mosman
18. Kongstruction, Builders Mosman
19. Kongstruction, Mosman project: turn old into new
20. LikeSilk Building, Mosman knockdown rebuilds
21. LikeSilk Building, Mosman
22. Sena Constructions, Mosman
23. The Perfect Space Design + Build, Mosman builder
24. Wisdom Homes, Knockdown rebuild specialist in Mosman
25. Wisdom Homes, Mosman build area page
26. AUD Build, Company facts
27. AUD Build, Completed homes (updated 22 October 2026)
28. AUD Build, New home in Mosman
29. AUD Build, Material price comparison

Related pages

• Best home builders in Mosman
• Renovation and extension builders in Mosman
• Building materials suppliers in Mosman
• Knockdown rebuild cost in Sydney (2026)
• Custom home inclusions checklist