Frequently asked
The questions we hear most, with the answers we’d give over the table.
If yours isn’t here, the fastest path is opening a conversation. We answer within two business days.
Part one
Delivery — quotes, progress, delays.
01How do I get a quote and how long does it take?
In order to obtain a quote the client must have building plans. If you already have an architect or would like us to provide one, we have amazing connections in the field who we work closely with. There are no costs involved putting together the building quote however there are cost to get the building plans.
Typically quotes will take around 2-3 weeks to produce depending on size. This timeframe is for us to make sure we have accounted for every aspect of the job as well as sending the plans for quoting to all our trade subcontractors.
02How can I keep track of progress?
Each client will be issued a login to our construction management software and can login directly from this website. There you will see all updates and schedules for your specific job. A log book is made every day reporting the activities and progress.
03What are the delays I often hear about
Being flexible in our work to calmly accept any variations to an initial design is critical because delays due to unforeseen situations such as weather, or geology - as well as contract amendments and alterations inevitably come to pass in every project.
Varloch Constructions are always improving. We focus on everything and we are continually searching for passionate tradesmen to build our team as we grow and take on more work and develop seamless systems between client, employees and subcontractors
Part two
Environment — sustainability, BASIX, materials.
01Do you have environment friendly options?
Yes, we even register for competitions and awards that recognise a green-smart, carbon footprint initiative.
This certain type of work requires us to work closely with the building designer or architect, which is where we suggest leaving us to subcontract our professionals for the job. Ultimately they design all the features, giving suggestions or taking requests from the client. Clients requesting for sustainability adds certain costs. We can lay out a plan upon request on how we can mitigate environmental damage.
02What is sustainability to Varloch
Sustainable building is ‘built to last’ - be it the higher quality of materials we use and the design we go for which will hopefully last decades to come with no need for someone to come along and pull it down.
Unsustainable are homes that need to be constantly renovated, demolished to chase a new trend, putting more building waste back into the ground.
03What is BASIX
BASIX is a NSW Government planning measure to reduce household electricity and water use by setting minimum sustainability targets for new and renovated homes. It sets minimum targets that must be achieved before a BASIX certificate can be generated, and then submitted as part of a development application or application for complying development. Water and energy use affects everyone and BASIX will continue to lead the way in lowering household energy and water use and costs.
Features they assess to issue the certificate, which is also a legal requirement, are: insulation, house orientation, water storage, solar, shades and blinds, pool covers, irrigation.
Part three
Money — costs, payment models, provisional sums.
01How much will my build cost.
It would be inaccurate to provide a cost of the build without seeing plans, a more important question to ask yourself is exactly how much do you want to spend and how well do you want to do it.
The price of your construction is based off the building design plans, a site inspection and your budget. Your budget is important during the drawings stage because the price difference between a concrete floor or timber floor, for example, is huge.
02What are my payment options
Varloch has many pricing methods for jobs to ease a client into the process. Any building arrangement and payment style can be considered so long as is represented and agreed in form of a contract.
All pricing methods and contract include variations as you can not predict the unseen, nor is it safe to make assumptions. However it is our job to make sure all these provisionals and variances are not hidden, and discussed openly before signing a contract and as soon as they arise on the job.
• Cost Plus
The contractor obtains materials and services throughout the building process and costs are passed to the owners, with an agreed margin to cover overheads and profits. This will be agreed to be billed at a set frequency most typically fortnightly.
Can be highly cost effective and the most transparent form of contract.
• Lump Sum
A lump sum contract has the contractor agree to complete the project for a predetermined, set price.
03What are Provisional Costs and Sums
Prime Costs and Provisional Sums are included in all contacts which cover an anticipated cost of certain elements or items included in the works.
A PC Item is an item that has not been selected at the time of signing the Contract. A PC Item includes the cost of the supply of the item only and includes items such as tiles, fixtures, lights.
A PS is an allowance for works that will be carried out, but cannot be priced exactly at the time of signing the contract. They often include a combination of items, materials, labour and plant hire. Most common provisional sum is excavation - you can not price the unknown.
Part four
General — defects, warranty, site access.
01How do you handle defects
While most building projects are completed successfully, occasionally there may be concerns or unmet expectations that result in a dispute. Most home building disputes arise because of disagreements between building owners and builders about the appropriate standards and quality of work.
Please refer to the NSW guide to standards and tolerances for detailed reading.
View NSW Fair Trading guide
02What warranty and insurances do I get?
HBC Insurance: Is a legal requirement when the contract cost of labour and materials is over $20,000. This cover protects the customer if the builder cannot complete building work or honour your warranty obligations.
Builders Insurance: Construction Works, Public & Product Liability Insurance is taken out by builders, tradesman or subcontractor to cover their responsibilities to insure against loss or damage to their build project.
03Can I come onsite while it is being built
Anyone accessing abuilding site must be inducted, or accompanied by someone who has.
Even though you own the land does not change this fact due to occupational health and safety (OHS). Owners are not allowed onto a construction site unless they have had a full safety induction.
Part five
Sydney specifics — cost, councils, tanking, timelines.
01How much does it cost to build a house in Sydney in 2026?
Custom residential build costs in Sydney typically fall between $4,500/m² and $9,000/m² depending on site difficulty, finish level, and inclusions. A 250m² family home on a flat block with mid-to-high inclusions usually lands in the $1.6M–$2.2M range for the build alone (excluding land, demolition, design fees, and council contributions).
For an exact figure on your specific brief, use our free Varloch PropDev calculator at /propdev — it accounts for site slope, demolition, basements, retaining, BASIX, and Sydney council levies. Or request a fixed-price quote once plans are at DA stage.
02What's the difference between a Class 1 and Class 2 build in NSW?
Class 1 buildings are detached or semi-detached residential dwellings — single houses, duplexes, townhouses where each unit doesn't share a fire-rated wall with another sole-occupancy unit above or below. Class 2 buildings are two or more sole-occupancy units stacked vertically — typically apartments.
Class 2 work in NSW triggers the Design and Building Practitioners Act 2020 (DBP Act). That means registered design practitioners, registered builders, declared designs lodged on the NSW Planning Portal, and stricter compliance documentation. It adds meaningful time and cost compared to Class 1.
Varloch builds Class 1 and lower-rise Class 2. We're licensed and registered for both.
03Do I need a Level 2 Building Practitioner for my Sydney project?
If your project is Class 2 (multi-unit residential) or has registered designs under the NSW DBP Act, you need a registered Class 2 builder. For complex Class 1 work — knock-down rebuilds with retained walls, heritage-listed properties, difficult-ground sites needing tanking, basements — you don't legally need a Level 2 Building Practitioner, but you want one.
Nick Varley holds NSW Level 2 Building Practitioner registration (BUP0004294). Level 2 covers buildings up to three storeys above ground. It signals additional structural and waterproofing competence beyond the basic NSW Builder Licence.
04What is tanking and why does it matter on a Sydney build?
Tanking is the system of waterproofing that keeps water out of below-ground structures — basements, retained-cut garages, lower-ground living spaces, swimming pools. On a sloped Sydney site (Mosman, Vaucluse, Northbridge, anywhere on a hill), the high side of the house is often below ground level and acts like the back of a swimming pool from the outside.
Bad tanking is the single most common cause of expensive remedial work in luxury Sydney homes. It's hard to fix after the building is finished because you can't easily get to the back of the wall.
Varloch is licensed as both a builder (373007C) and a plumbing contractor (479776C). We self-perform tanking and hydraulic work rather than subcontracting it, which means the people responsible for keeping water out are on our payroll, not someone else's invoice.
05How long does it take to build a custom home in Sydney?
From signed contract to handover, a custom Sydney home typically takes 12–18 months for a single-storey build on a straightforward site, and 18–30 months for a two-storey with basement, complex retaining, or heritage overlay. Add 6–12 months ahead of that for design, DA, and construction certificate approval.
Council assessment timeframes vary significantly — Mosman, Woollahra, and Northern Beaches councils tend to be slower than Inner West or Sydney City for residential DAs. Heritage-listed properties add another 2–4 months.
06What does Varloch's ten-job concurrent cap mean for me as a client?
We deliberately cap the number of active jobs at ten across the studio. That means the senior people who price your project — Nick, Jan, and the site manager — stay on your project from quote through to handover. There's no hand-off to a junior PM after contracts are signed.
The trade-off is that we run a waitlist when we're at capacity. The benefit is that decisions made at quoting time actually get honoured on site, which is the single biggest determinant of whether a build runs smoothly.
07Does Varloch work in [my suburb]?
We primarily serve Sydney metro, with strong concentration on the Lower North Shore (Mosman, Cremorne, Neutral Bay, Kirribilli, Cammeray, Northbridge, Hunters Hill, Lane Cove, Greenwich), Northern Beaches (Manly, Balgowlah, Seaforth, Freshwater, Curl Curl, Dee Why), Eastern Suburbs (Bondi, Bronte, Tamarama, Coogee, Vaucluse, Bellevue Hill, Double Bay, Rose Bay), and Inner West (Balmain, Rozelle, Leichhardt, Annandale, Glebe).
Outside Sydney metro we take on selected projects case-by-case based on complexity and team capacity. Use /contact and tell us where the site is — we'll be straight about whether we're the right fit.
08What's the difference between a quote, an estimate, and a fixed-price contract?
An estimate is a rough number based on incomplete information — usually given before plans are drawn, useful only for high-level feasibility. A quote is a priced bill of works based on full architectural and engineering documentation — what we produce at the end of our 2–3 week quoting process. A fixed-price contract converts that quote into a legally binding agreement at a single lump sum.
Cost-plus is the alternative contract model: you pay the actual cost of materials and labour plus an agreed builder's margin. Cost-plus is more transparent and often cheaper than lump sum on complex projects where many variables are unknown, but it transfers price risk from the builder to you.
Both models include Prime Cost items (PC) for things like tiles and fixtures where you haven't selected yet, and Provisional Sums (PS) for work that can't be priced exactly at signing — typically excavation.
09What is BASIX and how does it affect my build budget?
BASIX (Building Sustainability Index) is a NSW Government planning measure requiring new homes and major renovations to meet minimum sustainability targets for water, energy, and thermal performance before a BASIX certificate can be issued. The certificate is a legal requirement at DA submission.
Practically, BASIX affects glazing (low-E glass, double-glazing in colder zones), insulation (higher R-values), ceiling fans, hot water systems (heat pump or solar), and often water tanks. On a typical custom Sydney home it adds $25k–$80k to the build cost depending on which credits the design relies on.
It also tends to influence orientation and overhang design — which is why we like to be in the room early when an architect is setting the building envelope, before BASIX-driven decisions become expensive to unwind.
10Can I see Varloch projects in progress or completed?
Yes. Completed projects with photos and brief case-studies are at /projects. For in-progress site visits, we can usually arrange a walkthrough of an active site with the homeowner's permission — useful if you want to see the quality of framing, services rough-in, or tanking before they're hidden behind plaster.
We don't run open inspections — every visit needs a safety induction. Email contact@varloch.com.au to request.
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