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Buildana Insights

Expert guides, real project breakdowns, and practical advice for building in Sydney.

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Every article below is written by Oliver Alameri, licensed builder (LIC 487805C) and founder of Buildana. No outsourced content, no recycled industry blog fluff — just the decisions, costs, and approval traps we actually deal with on Western Sydney sites every week.

The library covers four areas we build in daily: duplex development (feasibility, Torrens vs strata, council LEP differences between Fairfield, Liverpool, Cumberland, Canterbury-Bankstown and Blacktown), knockdown rebuilds (demolition sequencing, asbestos, Section 7.11 contributions, Housing Code vs DA pathways), granny flats and secondary dwellings (SEPP Affordable Rental Housing rules and cost ranges), and custom homes and renovations (slab decisions, inclusions lists, fixed-price vs cost-plus). Cost figures draw on the Rawlinsons Australian Construction Handbook and our own completed project budgets — not estimates.

New to Buildana? Start with Cost to Build a Duplex in Sydney or Knockdown Rebuild Cost Sydney. Looking for structured end-to-end reading? The Guides hub groups our pillar content into long-form chapters. For LGA-specific pricing and council notes, filter by location below.

349 articles

Hornsby BAL Deep Dive 2026 — Why the Bushfire Layer Drives Build Cost More Than the Build Itself
ApprovalsLatest

Hornsby BAL Deep Dive 2026 — Why the Bushfire Layer Drives Build Cost More Than the Build Itself

Berowra, Mount Colah, Cherrybrook, Hornsby Heights, Galston, Glenorie. Real BAL-12.5 to BAL-FZ cost premiums on completed Hornsby projects, RFS BPA pathway, APZ design integration and why your 2-year-old BAL report can be wrong.

14 June 20266 min readBy Oliver Alameri
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Mosman & North Sydney Harbourside Build Reality 2026 — View-Sharing, FBL and Why the Approval Window Is Longer Than the BuildNew Homes

Mosman & North Sydney Harbourside Build Reality 2026 — View-Sharing, FBL and Why the Approval Window Is Longer Than the Build

Mosman is the strictest suburban Council in Sydney. North Sydney is different again. Harbourside build cost reality — substructure on sandstone-and-slope, marine spec, view-sharing case law, and the realistic 4–6 year window from first meeting to handover.

10 June 20266 min read
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Ryde & Hunters Hill River Suburbs 2026 — FBL, Heritage and the Real Cost Gap Between Two Neighbouring LGAsNew Homes

Ryde & Hunters Hill River Suburbs 2026 — FBL, Heritage and the Real Cost Gap Between Two Neighbouring LGAs

Putney, Tennyson Point, Gladesville, Hunters Hill peninsula and Woolwich. Why two blocks 800m apart on opposite sides of the LGA boundary deliver completely different build conversations — heritage, FBL, soil, canopy, and 2026 cost ranges.

6 June 20266 min read
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Burwood, Strathfield & Homebush Apartment Infill 2026 — TOD, Manor Homes and Where the Margin Actually SitsDuplex

Burwood, Strathfield & Homebush Apartment Infill 2026 — TOD, Manor Homes and Where the Margin Actually Sits

TOD uplift, Low and Mid Rise reform and underlying LEP controls in 2026. Real cost ranges across dual occupancy, manor home and small RFB build types — and where private-owner feasibilities actually pay back versus get oversold.

2 June 20266 min read
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Strathfield Mansion Belt Build Controls 2026 — Heritage, FSR & Character RealityApprovals

Strathfield Mansion Belt Build Controls 2026 — Heritage, FSR & Character Reality

Strathfield's Mansion Belt is the densest concentration of pre-war and inter-war mansion stock in Sydney. Three layers of heritage control, strict FSR and landscape rules, and why most owners can't KDR what they think they bought.

29 May 20266 min read
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Canada Bay Foreshore Building Line in 2026 — The Control Most Owners Don't Discover Until Mid-DAApprovals

Canada Bay Foreshore Building Line in 2026 — The Control Most Owners Don't Discover Until Mid-DA

Drummoyne, Five Dock, Russell Lea, Cabarita and Concord harbourside reality — Foreshore Building Line setback, HCA stacking, marine spec premium and the $180k–$420k inner-harbour cost premium most owners don't price into the land conversation.

24 May 20266 min read
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Camden Aerotropolis Northern Fringe in 2026 — What Owners Are Actually BuyingConstruction

Camden Aerotropolis Northern Fringe in 2026 — What Owners Are Actually Buying

Catherine Field, Cobbitty, Oran Park, Gledswood Hills — greenfield civils premium, reactive clay slab realities, the new Aerotropolis acoustic overlay, and why the project home Penrith template doesn't apply on this fringe in 2026.

22 May 20266 min read
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Bayside & Georges River Salt-Affected Coastal Builds in 2026 — The Real Cost PremiumConstruction

Bayside & Georges River Salt-Affected Coastal Builds in 2026 — The Real Cost Premium

Brighton-Le-Sands to Sylvania Waters salt premium reality — N40 marine concrete, 316 stainless throughout, raised slab on piers, Coastal Management Program triggers, and the $230k–$585k substructure gap between inland and direct waterfront on the same LGA.

20 May 20266 min read
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Duplex Builders Sydney — How to Actually Choose One in 2026Duplex

Duplex Builders Sydney — How to Actually Choose One in 2026

Most owners pick the wrong duplex builder in Sydney for two reasons. Here's the seven-question shortlist, the contract docs to verify, and the LGA-by-LGA reality across Liverpool, Fairfield, Blacktown, Cumberland and Camden.

18 May 202611 min read
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Custom Home Builders Sydney — The Practitioner's Selection Guide (2026)New Homes

Custom Home Builders Sydney — The Practitioner's Selection Guide (2026)

Every Sydney builder calls themselves a custom home builder. Most aren't. Here's how to tell the difference, the four price bands of custom in 2026, and the six-step decision framework when you're down to three.

18 May 202612 min read
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Inner West Heritage Conservation Areas in 2026 — What's Actually AllowedRenovations

Inner West Heritage Conservation Areas in 2026 — What's Actually Allowed

Practical Inner West HCA framework — what front facade controls actually mandate, what rear extensions are allowed, real 2026 cost ranges across Newtown, Petersham, Marrickville, Annandale, Balmain and Haberfield, and the four reasons Inner West HCA DAs go sideways.

18 May 20267 min read
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Eastern Suburbs Coastal Management Act — Real Build Constraints in 2026Construction

Eastern Suburbs Coastal Management Act — Real Build Constraints in 2026

Vaucluse, Bronte, Tamarama, Coogee and Maroubra coastal hazard adaptation reality — sea-level-rise modelling, Crown Lands referral, cliff stability engineering and the $280k–$850k coastal premium most owners don't budget for before contract.

16 May 20267 min read
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