AUD BUILDSYDNEY RESIDENTIAL CONSTRUCTION
AUD Build / Insights / Best home builders in Mosman

Builder comparison · Mosman

Best home builders in Mosman (2026): nine compared

Nine builders whose own websites say they build in Mosman, compared on what each one publishes, with the local rules that shape a new home or renovation. AUD Build publishes this page and is one of the nine; its row is marked “This is us”.

By XLGUpdated: 2026-10-28Facts from each builder’s own websitePublished by AUD Build

Short answer

In Mosman, owners building an architect-designed house often compare Bellevarde Constructions and AAG Constructions; for one in-house design-and-build team, Hall & Hart, Icon Homes and The Perfect Space Design + Build; for heritage renovations and knockdown rebuilds, LikeSilk Building; and for a design range, G.J. Gardner Homes. AUD Build (this is us) completed a new house in Mosman through its group’s building companies. Mosman has around 500 heritage items and archaeological sites and 13 heritage conservation areas, a foreshore building line in its LEP, and Mosman Council averaged 80 days to assess a DA in September 2026, so check the lot’s heritage status before you choose a design.

Building in Mosman: local figures

ItemFigureSource
CouncilMosman Municipal Council[1]
Average DA assessment time80 days (September 2026; 84 days in August, 61 in July)[2]
Median weekly house rent, new bondsA$2,100 in Mosman (postcode 2088, 56 new bonds), April–June 2026[3]
HeritageAround 500 heritage items and archaeological sites and 13 heritage conservation areas; development in or next to them must be sympathetic to their significance[4] [1]
Dual occupancyNot allowed in R2 under Council’s own rules but now permitted state-wide; within 800 m of the Spit Junction and Cremorne town centres the state standard is 450 m² and 12 m wide, and Council’s LEP and DCP apply elsewhere; a minimum lot width was proposed in May 2026[1] [5]
ForeshoreMosman LEP 2012 sets a foreshore building line (clause 6.3); varying it needs a clause 4.6 request[6]
Before you demolishThe new home must be approved first; houses built before 1987 need licensed asbestos removal[7] [8]

At-a-glance comparison

BuilderBest forWhat it buildsArea (in the builder’s words)
AAG ConstructionsOwners who already have a designer or architect and want a builder that takes on a limited number of new homes a year.Custom new homes from designer or architect plans“custom designed homes for Mosman families”
Bellevarde ConstructionsOwners building an architect-designed house who want a builder with a long record of Mosman projects.Architect-designed new houses, alterations and additionsLists Balmoral House, Palm House and Biet House in Mosman among its projects
G.J. Gardner Homes (Mosman)Owners who want a custom home or a design from a 150+ range, through a franchise serving Mosman.Custom homes and 150+ designs; knockdown rebuilds“The G.J. Gardner Homes franchise servicing Mosman”
Hall & HartOwners who want one in-house team for design, approvals and construction, with heritage-sensitive work in Mosman.Custom and luxury homes, knockdown rebuilds, renovationsNames Mosman among its North Shore projects and shows a completed Mosman home
Icon HomesOwners who want a custom home designed from scratch rather than from standard plans.Custom homes, knockdown rebuilds, duplexes“Our custom home building service in Mosman”
LikeSilk BuildingOwners of Mosman heritage homes who want a family-run builder for a renovation or knockdown rebuild.Renovations and knockdown rebuilds“working across Mosman and the North Shore”
Sena ConstructionsOwners comparing a bespoke home, duplex or knockdown rebuild from one builder.Bespoke homes, duplexes, knockdown rebuilds“Proudly servicing postcode 2088.”
The Perfect Space Design + BuildOwners planning a luxury renovation, second-storey addition or custom home with a design-and-build team.Luxury renovations, second-storey additions, custom homes“Mosman builder specialists”
AUD Build · This is usMosman owners who want design, materials, construction, sales and lending coordinated by one company, with material unit prices they can check.New homes, knockdown rebuilds, custom and luxury homes, duplexes, granny flats, renovations and extensions1 of its group’s 21 homes completed since September 2024 is in Mosman: a new house

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

The 9 builders compared

1. AAG Constructions

Best for: Owners who already have a designer or architect and want a builder that takes on a limited number of new homes a year.

What its website says:

  • Has a Mosman page about building custom-designed homes for Mosman families.
  • Says it selects a limited number of new home projects each year.
  • Says clients typically come to it after engaging a designer or architect; based in Bilgola Plateau.

Area: “custom designed homes for Mosman families”

Sources: [9]

2. Bellevarde Constructions

Best for: Owners building an architect-designed house who want a builder with a long record of Mosman projects.

What its website says:

  • Lists Mosman projects including Balmoral House, Palm House and Biet House.
  • Says its team has been building since 1980.
  • Builds architect-designed houses, and lists new houses and alterations and additions among its project types.

Area: Lists Balmoral House, Palm House and Biet House in Mosman among its projects

Sources: [10]

3. G.J. Gardner Homes (Mosman)

Best for: Owners who want a custom home or a design from a 150+ range, through a franchise serving Mosman.

What its website says:

  • Has a page for the G.J. Gardner Homes franchise servicing Mosman.
  • Offers custom homes or off-the-plan designs from 150+ options.
  • Says the brand has more than 35 years in home building; this page gives a Brookvale base.

Area: “The G.J. Gardner Homes franchise servicing Mosman”

Sources: [11]

4. Hall & Hart

Best for: Owners who want one in-house team for design, approvals and construction, with heritage-sensitive work in Mosman.

What its website says:

  • Names Mosman among its North Shore projects, and its portfolio shows Mosman Maison, designed to fit Mosman’s heritage context.
  • Its in-house team brings design, approvals and construction into one process.
  • Its website shows Builders Licence 275897C.

Area: Names Mosman among its North Shore projects and shows a completed Mosman home

Sources: [12] [13]

5. Icon Homes

Best for: Owners who want a custom home designed from scratch rather than from standard plans.

What its website says:

  • Has a Mosman custom home page.
  • Says it does not work from off-the-shelf plans or standard templates.
  • Says it began 10 years ago on the Northern Beaches; head office in St Leonards.

Area: “Our custom home building service in Mosman”

Sources: [14] [15]

6. LikeSilk Building

Best for: Owners of Mosman heritage homes who want a family-run builder for a renovation or knockdown rebuild.

What its website says:

  • Describes itself as a family-run, licensed builder working across Mosman and the North Shore.
  • Its website shows licence 274849C and HBCF insurance, and says it is experienced with Mosman heritage homes and conservation areas.
  • Has a Mosman knockdown rebuild page that covers the process from site assessment to handover.

Area: “working across Mosman and the North Shore”

Sources: [16] [17]

7. Sena Constructions

Best for: Owners comparing a bespoke home, duplex or knockdown rebuild from one builder.

What its website says:

  • Has a Mosman page that says it services postcode 2088.
  • Offers high-end bespoke homes, duplexes and knockdown rebuilds.
  • Its office is in Greystanes. The page uses the same text as its other suburb pages and shows no Mosman project.

Area: “Proudly servicing postcode 2088.”

Sources: [18]

8. The Perfect Space Design + Build

Best for: Owners planning a luxury renovation, second-storey addition or custom home with a design-and-build team.

What its website says:

  • Has a Mosman page offering luxury renovations, custom homes and second-storey additions.
  • Says it has over 17 years of experience and works with a registered architectural partner and interior designers.
  • Its website shows Builders Lic 266190C and an office in Manly.

Area: “Mosman builder specialists”

Sources: [19]

9. AUD Build · This is us

Best for: Mosman owners 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: about 10 months from site start in December 2022 to practical completion, with the occupation certificate issued in September 2024.
  • Builds new homes, knockdown rebuilds, custom and luxury homes, duplexes and granny flats, and carries out 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

Sources: [20] [21] [22] [23]

Where other builders may suit you better

  • Architect-designed homes: Bellevarde Constructions (building since 1980) and AAG Constructions, which works from designer or architect plans.
  • One in-house design-and-build team: Hall & Hart, Icon Homes and The Perfect Space Design + Build.
  • Heritage homes and conservation areas: LikeSilk Building and Hall & Hart.
  • Second-storey additions and luxury renovations: The Perfect Space Design + Build.
  • A design range to start from: G.J. Gardner Homes (150+ designs).
  • Design, materials, construction, sales and lending from one company, with material prices you can check: AUD Build.

How to choose

  1. Check whether the lot is a heritage item, in one of Mosman’s 13 heritage conservation areas, or behind the foreshore building line; each changes what you can build and whether a CDC is possible.
  2. For a duplex, check whether the lot is within 800 m of Spit Junction or Cremorne; elsewhere Council’s own LEP and DCP apply.
  3. Ask each builder which Mosman or heritage projects it has built, and who prepares the DA and heritage documents.
  4. Ask every builder to quote on the same drawings and compare inclusions line by line with the inclusions checklist.
  5. Check the licence on Verify NSW and the HBC certificate before you pay a deposit.

Questions

Who are the best home builders in Mosman?

It depends on the brief. For an architect-designed house, owners often compare Bellevarde Constructions and AAG Constructions; for one in-house design-and-build team, Hall & Hart, Icon Homes and The Perfect Space Design + Build; for heritage renovations, LikeSilk Building. AUD Build suits owners who want design, materials, construction, sales and lending coordinated by one company.

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.

Can I build a duplex in Mosman?

Dual occupancy is now permitted in Mosman’s R2 zone under the state policy, which Council’s own rules did not allow. Within 800 m of the Spit Junction and Cremorne town centres the state standard is a 450 m² lot and 12 m width; elsewhere Council’s LEP and DCP apply, and heritage items are excluded.

How many heritage conservation areas are there in Mosman?

Mosman Council lists 13 heritage conservation areas and around 500 heritage items and archaeological sites. Complying development is not available in heritage conservation areas, so most heritage-area projects need a DA.

Why is AUD Build on this list?

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

How this list was built

Selection: builders whose own websites say they build in Mosman, drawn from Google Australia results for Mosman builder and luxury home builder searches on 28 October 2026. Directories and Buildana 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, reviews, testimonials and award claims are not published. 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. NSW DCJ, Rent tables June 2026 quarter (new bonds, houses)
  4. Mosman Council, Heritage listings (updated 6 August 2024)
  5. Mosman Council, Council decided, 5 May 2026
  6. Mosman Council, Planning controls FAQ (updated 6 August 2024)
  7. NSW Planning Portal, Knockdown and rebuild considerations
  8. NSW Planning Portal, Complying development: demolition (updated 30 April 2025)
  9. AAG Constructions, Home builders Mosman
  10. Bellevarde Constructions, home page
  11. G.J. Gardner Homes, Home builders Mosman
  12. Hall & Hart, North Shore home builders
  13. Hall & Hart, Mosman Maison
  14. Icon Homes, Mosman
  15. Icon Homes, About
  16. LikeSilk Building, Mosman
  17. LikeSilk Building, Mosman knockdown rebuilds
  18. Sena Constructions, Mosman
  19. The Perfect Space Design + Build, Mosman builder
  20. AUD Build, Completed homes (updated 22 October 2026)
  21. AUD Build, Company facts
  22. AUD Build, Material price comparison
  23. AUD Build, New home in Mosman