Contract variations in Tasmania

What the Residential Building Work Contracts and Dispute Resolution Act 2016 (Tas) asks of a variation, and a form that follows it. Fill it in below — the document uses the TAS wording.

What the law says

A variation needs a written variation document signed by both parties; where it adds work, it must be in place before that work begins (sections 17–21).
The document must describe the variation, give the reason when the builder asks for it, estimate any delay, state the price change or how it will be worked out, and say how progress payments are affected (section 18(2)).
The owner must get a copy within 5 business days (section 20); where a permit needs consent, that consent is attached (section 21).
The Act applies to contracts over $20,000.

Source: Residential Building Work Contracts and Dispute Resolution Act 2016 (Tas), read 27/09/2026. A summary, not legal advice.

What the document prints for TAS

This is a written variation document under sections 17 to 21 of the Residential Building Work Contracts and Dispute Resolution Act 2016 (Tas), signed by both parties. A copy is to be given to the owner within 5 business days (section 20).

Besides the parties, site, description and priced lines, the form asks for why it is needed, when the builder asks for it; the estimated delay, if the completion date moves; whether an amended permit or approval is needed; when an increase is paid or a decrease accounted for.

Who is sending it

State or territory of the site

Your details — the builder

Business nameABN (optional)Licence no. (optional)Person signing (optional)Who signs for the business. Their name is filled in when you sign.EmailYour copy and the signed PDF come here.Phone (optional)Address (optional)

The owner — who signs it

Owner's name, or all the owners' namesPerson signing (optional)If one owner signs for all of them. It goes on the document, and their name is filled in when they sign.EmailThe signing link goes here. It must be different from yours.Phone (optional)Address (optional)

Site and contract

Project name (optional)What you both call the job. It goes first on the document.Site addressContract date (optional)Contract reference (optional)Original contract price, inc GST (optional)The price in the signed contract.Contract price before this variation, inc GST (optional)The original plus the variations signed before this one. On Variation 1 you can leave it blank.

It is a cost-plus contract

The variation

Variation numberAsked for byDate it was asked for (optional)What changes — the work added or taken outWhy it is needed (optional)

It adjusts a prime cost item or provisional sum (an allowance in the contract)

Price — amounts ex GST

Margin on the work added, % (optional)Worked out on the lines marked Add, before GST, and printed as its own line.

Net change ex GST: $0.00
GST 10%: $0.00
Total inc GST: $0.00

Payment, time and permits

When the extra is paidNever before the varied work starts.

It changes the completion date — TAS requires the delay estimateIt needs an amended building permit, approval or plans

Substantiation

Optional. Photos of the work, quotes, dockets or drawings that back the variation — up to 10, 20 MB in all. Each goes in after the signatures as a numbered annexure: an image fitted to its page, a PDF listed with its link.

Add photos or PDFs0 of 10 · 0 KB of 20 MB

Files upload as you add them and are kept privately. If the variation isn't sent, they're deleted after a day.

Before it can be sent

Your name (the builder)
Your email address
The owner's name
The owner's email address — the signing link goes there
The site address
A description of the work added or taken out
At least one priced line

The preview is free and marked PREVIEW. Nothing is sent or stored until you sign and send it.

Sign and send

Still to fill in: Your name (the builder), and 6 more listed above.

VARYPRO

Contract variationVariation 1

Contract variation

Variation 1 to the parties' contractPreview — not sent

Builder

Name

Owner

Name

Site

Site address

State

TAS

The variation

Requested by the owner

Describe the work added or taken out

Price

Work added (+) or taken out (−)	Amount ex GST
No priced lines yet

When the change in price is paid

With the next progress claim after the varied work starts

Never before the varied work starts.

Time

No change to the completion date.

Permits and approvals

No amended building permit, approval or plans needed.

Net change (ex GST)	$0.00
GST 10%	$0.00
Total change (inc GST)	$0.00

Tasmania — the law this document follows

This records an agreement between the parties under their own contract. VaryPro prepares and delivers the document; it is not a party to it and does not give legal advice.

Signed by the builder

Signed when the document is sent

Signed by the owner

Signed when the document is sent