BASIX certificate · Alterations & additions
BASIX certificate for your renovation, back today
Renovations over $50,000 need a BASIX certificate before you can lodge your DA or CDC. We prepare it, resolve the targets and register it, same business day.
- $159 flat fee, no hidden costs, and the $33 government fee is included
- Same business day when you order by 3pm, Monday to Friday
- Targets resolved for you, not handed back as your problem
- One free revision within 60 days if the design changes
Prices exclude GST. Total payable $174.90.
Paid before 3pm on a weekday? If we miss same-day delivery, you choose a refund or 50% off. Terms apply.
What you will need, about 2 minutes
- The type of work and your estimated construction cost
- Materials for new walls, roof and floors
- Glazing: new windows and doors
- Heating, cooling and hot water
- The property address
Not sure on a number? Put your best estimate in. We check it against your plans before anything is issued.
Start your certificate. $159.
Assessed within 2 business hours. Registered certificate emailed the same business day.
Price excludes GST. Total payable $174.90.
Does your renovation actually need one?
In NSW, alterations and additions with an estimated construction cost of $50,000 or more need a BASIX certificate before your DA or CDC can be determined.
That catches most serious residential work: extensions, second storey additions, major internal renovations and open-plan knock-throughs. Once you are adding rooms or reworking a substantial part of the house, you are usually well past it.
If your project genuinely comes in under $50,000 you generally do not need one, and we will tell you that rather than sell you one.
How the $50,000 is measured
It is the figure that goes on your development application, covering labour and materials for the work itself.
It is not the value of the finished home, and not what you paid for the property.
Close to the line? Work off the estimate your builder or designer already put on the plans.
What we check, and what we fix
A renovation is assessed against three BASIX targets: water, thermal comfort and energy. Here is what actually moves the numbers, and what we change if you come up short.
Thermal comfort
Glazing and insulation in the new work. This is the target that most often needs adjusting, and the fix is usually a glazing change rather than anything structural.
Energy and water
Heating, cooling, hot water and lighting for the altered part of the home, plus the taps, showerheads and toilets going into the new work.
What $159 actually buys
- A registered BASIX certificate, issued under the NSW scheme and ready to attach to your DA or CDC
- The $33 NSW Government registration fee, included rather than billed on top
- A tax invoice from AustechHub Pty Ltd with the GST shown separately
- The targets resolved for you. If you fall short we show you the change that fixes it
- One free revision within 60 days if your design changes
- Assessment within two business hours, Monday to Friday
No quote form, no callback to find out the price, no second invoice.
Example certificate. Identifying details removed.
How it works
Three steps, and only the first one is yours.
1. Tell us about the project
Five minutes on the form above. We prompt you for anything missing, so you do not need every number to hand before you start.
2. We assess and resolve
Within two business hours we check it against the BASIX targets. If something falls short we come back with the change that fixes it and finalise a certificate you can build to.
3. Registered and emailed
Your certificate is registered with the scheme and emailed the same business day, ready to attach to your DA or CDC.
Ready to start?
Five minutes on the form. $159 flat, assessed within two business hours, certificate emailed the same business day.
What it costs, and the honest version
$159 covers everything: the assessment, resolving the targets, registering the certificate and the $33 government fee. GST is added at checkout, making it $174.90 all up.
You can also do it yourself. The NSW BASIX tool is public and the registration fee is around $33. If you have the details on hand, understand what the targets are asking for, and have time to work through the changes when the project falls short, that is a genuine option and we would rather say so than pretend otherwise.
Alterations and additions cost more than a pool certificate because there is more in them. Thermal comfort brings glazing, insulation and materials into the assessment, and that is the part that needs solving rather than simply recording.
What it costs to not have one
Your DA or CDC cannot be determined without a BASIX certificate. The application sits, or comes back to you, and everything behind it moves right. On a job with trades booked, a week lost at lodgement is expensive.
The second failure point is at the end. The commitments on the certificate are checked at final inspection, so what you build has to match what was certified. That is a bad surprise to get when you are trying to close the job out.
Who we do this for
Homeowners
Building a pool or renovating, and told you need a BASIX certificate before you can lodge.
Builders and trades
You are the one who gets asked about BASIX. Send us the details and we turn it around the same day, so your client’s lodgement is never waiting on paperwork.
Building designers
A fast, fixed-fee certificate that fits inside your own timeline.
Private certifiers
A straightforward source for the certificate your applicant is missing.
Building a brand-new home? That needs a full NatHERS thermal rating alongside BASIX, which we do not offer. Email hello@samedaybasix.com.au and we will point you to an accredited assessor rather than waste your time.
Common questions
Which renovations need a certificate?
Alterations and additions with an estimated construction cost of $50,000 or more, before you can lodge your DA or CDC. Most extensions and major renovations qualify.
Is the government fee included in the $159?
Yes. The $33 NSW Government registration fee is inside the $159. GST is added at checkout, so the total you pay is $174.90. There is nothing else on top.
How fast is it?
Assessed within two business hours and emailed the same business day when you order by 3pm (Sydney), Monday to Friday. After 3pm or on a weekend it is first thing the next business day. If you paid before 3pm on a weekday, gave us complete information and we miss same-day delivery for reasons within our control, you choose a refund or 50% off the service price.
How is the $50,000 measured?
It is the estimated cost of the building work that goes on your development application, covering labour and materials. It is not the value of the finished home.
What if my renovation does not meet the targets?
We resolve it within the assessment, usually by adjusting glazing, insulation or a fitting, so you finish with a certificate you can build to.
What if the design changes?
One free revision within 60 days, for the same project and property. Any additional government fee is passed on. The commitments become build obligations checked at final inspection, so the certificate needs to keep matching the build.
How long is the certificate valid?
A BASIX certificate needs to be submitted with your DA or CDC within three months of its date of issue.
Can I start before my plans are final?
Yes. Work off your current drawings and use the free revision if things move. Most people would rather have the certificate ready than wait.
Can I just do it myself?
You can. The NSW BASIX tool is public and the fee is around $33. It asks for materials, glazing and services detail most people do not have on hand, and expects you to meet the thermal comfort target yourself. We do that part for you.
Do you do brand-new homes?
Not at this stage. A new dwelling needs a full NatHERS thermal assessment alongside BASIX. Get in touch and we will point you to an accredited assessor.
Start your alterations and additions certificate
Five minutes on the form, assessed within two business hours, certificate emailed the same business day. $159 flat, including the $33 government fee.
Prefer to talk first? Call 0468 057 299, Monday to Friday, 8am to 6pm.
Same Day Basix is an independent service and is not affiliated with the NSW Government or NSW Planning. BASIX is a NSW Government program. A trading name of AustechHub Pty Ltd, ABN 59 671 673 555, servicing all of New South Wales. Prices shown exclude GST; total payable $174.90. hello@samedaybasix.com.au · 0468 057 299
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