What a coastal pile foundation actually costs
Spec-builders quote piling on coastal sites the way they quote it on flat suburban blocks. The number isn't comparable, and the gap is where most coastal projects blow their budget.
17 May 2026 · Nick Varley · 6 min readRead it →
How to choose a basement or under-house excavation builder in Sydney
Digging under an existing house is structural work first and building work second. Here is what to check before you choose a builder for it — the reports, approvals and insurance that should be in place, and the questions that show whether a builder has actually done it.
Varloch Construction- basement
- excavation
- choosing a builder
How to choose a heritage builder in Sydney
Heritage work is regulated, slower, and unforgiving of the wrong materials. Here is how to check a builder before you hand them a listed house or a home in a conservation area — which controls apply, which documents drive the job, and what to ask.
Varloch Construction- heritage
- choosing a builder
- approvals
Digging out a basement under an existing house
Adding a basement beneath a house you already own is the most cost-effective floor area in Sydney — right up until the point it isn't. The line between those two states is mostly geology.
Nick Varley- basement
- excavation
- underpinning
What a knock-down rebuild actually costs in Sydney
The build quote is the number people compare. It's rarely more than three quarters of what leaves your account. Here's the whole stack, with the parts that surprise people.
Nick Varley- build-costs
- knock-down-rebuild
- sydney
How to choose a builder in Sydney — a straight guide
Choosing a residential builder in Sydney is the biggest financial decision most people make after buying the land. Here is how to compare builders honestly — the licences to check, the questions that separate good builders from cheap quotes, and the red flags worth walking away from.
Jan Lochtenberg- choosing a builder
- contracts
- transparency
Building designer vs architect in NSW — what the titles actually mean, and who you need
In NSW, "architect" is a protected title under the Architects Act 2003 — but most Sydney homes are not designed by architects. Here's what a building designer actually does, when you need one over the other, and why we're careful with the words.
Jan Lochtenberg- design
- building-designer
- regulation
What drawings you actually need for a DA in Sydney (and who prepares each one)
A Sydney DA needs more than floor plans — site plan, elevations, sections, shadow diagrams at 9am, 12pm and 3pm on 21 June, a landscape plan, A4 notification plans, and BASIX commitments marked on the drawings themselves. Here's the full set, who prepares each piece, and why DA drawings and construction drawings are not the same thing.
Nick Varley- building-design
- da
- council
Provisional sums and PC items — where a fixed-price quote isn't fixed
Two line items hide most of the cost surprises in a Sydney residential build. What they are, why they exist, and how to read them before you sign.
Jan Lochtenberg- build-cost
- contracts
- what-to-expect
What the Northern Beaches dual-occupancy rules actually mean for a single-block owner
NSW's Low and Mid-Rise Housing reforms now permit dual occupancies on most R2 lots over 800 m² across the Northern Beaches, and a consolidated council DCP is due mid-2026. Here's what changes for a homeowner sitting on a typical block.
Jan Lochtenberg- northern-beaches
- planning
- dual-occupancy
Why a fresh house cracks in first 8 weeks
New builds hold construction moisture. As it dries, timber and plaster move slightly. What's normal, what isn't, and what to do about each.
Jan Lochtenberg- handover
- maintenance
- what-to-expect
Underpinning during basement excavation
On a tight Sydney site, basement excavation often means underpinning a neighbour's footings. The sequencing isn't optional. How we approach it.
Nick Varley- basement
- underpinning
- structural
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