Extensions of Time

Introduction

When you sign a building contract, one of the questions you care about most is simple: when will the house be finished? Then construction begins and the date starts to move. Extensions of time are the contractual mechanism for deciding when a delay legitimately moves the completion deadline.

The difference between the building period and the calendar date

Many contracts identify a construction period and define when that period starts rather than promising a fixed calendar completion date at signing. The start may depend on approvals, finance, engineering, selections, site possession or other preconditions.

Why extension-of-time clauses exist

Construction is exposed to events that cannot always be controlled. Weather, authority decisions, shortages, latent conditions and owner changes can affect sequencing. The extension clause identifies which events can move the completion date and what procedure must be followed.

Common causes of delay

Adverse weather.

Authority or approval delays.

Owner variations.

Late selections or information.

Engineering or site-condition changes.

Material or labour shortages.

Suspension permitted by the contract.

Acts or omissions of the homeowner.

Other events recognised by the contract.

Weather is more complicated than 'it rained'

The practical impact can extend beyond the hours in which rain falls. A saturated site may be inaccessible. But not every rainy day necessarily delays every project. The question is whether the event actually affected the work and whether the contract recognises it.

Owner-caused delay

Late selections, delayed access, owner-supplied items, slow approvals and design changes can unintentionally delay the project. Contractual deadlines for owner decisions should be treated as real project dates.

Delay does not always equal the extension claimed

An event must generally have an actual effect on completion. A two-day event can sometimes cause longer disruption; a five-day event may have no effect if it does not affect the critical sequence.

Notice provisions are important

Most clauses require written notice. Read each notice, identify the event, the period claimed and whether a financial consequence is also asserted.

Do not confuse time with money

An event may entitle the builder to additional time without additional money. Another event may affect both. Ask separately whether the event changes the completion date and whether it creates a financial consequence. Importantly, unlike many commercial building contracts, the standard HIA and MBA residential contracts used in South Australia do not generally provide for damages payable to the owner for late completion. However, a homeowner may still have a claim for general damages under the general law if the builder’s delay causes actual loss - such as additional rent, storage or interest - so a homeowner should not assume that a fixed daily sum automatically accrues simply because the adjusted completion date has passed, but nor should they assume they have no remedy at all.

Keep your own delay record

Construction commencement date.

Original construction period.

Each extension notice.

Cause and days claimed.

Relevant emails, photos and site updates.

Owner decisions and response dates.

Variations affecting time.

Running adjusted completion date.

Questions to ask before signing

When does the construction period commence?

How is time measured?

What events entitle the builder to an extension?

How is weather treated?

What owner actions can create an extension?

What notice must be given?

Can an event create both time and cost consequences?

What happens after the adjusted completion date?

The key lesson

A completion date is usually the result of contractual machinery: commencement plus the agreed building period, adjusted by valid extensions of time. The goal is not to eliminate every delay. It is to know how your contract decides which delays move the deadline and which do not.

Before You Sign

This guide provides general educational information for South Australian homeowners. It is not personalised legal advice. The effect of any issue depends on the wording of your own contract, schedules, Special Conditions, plans, specifications and the facts of the project. A good builder and a well-understood contract should work together. Before committing to one of the largest financial transactions you may ever undertake, consider having the actual contract reviewed so you understand the obligations, notice requirements and consequences before they are tested on site.

Before You Build. One Signature. One Chance.