Chippy (carpenter) on a residential job: scope, tolerances, working with other trades

TL;DR

Chippy is the residential carpenter. Frames the structure (roof, walls, floors), then comes back to fix-out (skirting, architrave, doors, internal trim, decks, eaves). Often the lead trade on site. AS 1684 governs the framing work; HIA Guide to Materials and Workmanship sets the workmanship bar. Licensing varies by state: NSW Fair Trading requires a contractor licence over $5,000; VIC has Domestic Builder Limited (Carpentry); QLD QBCC has a Carpentry trade contractor licence; other states each have their own scheme.

What this trade covers

The chippy on a typical residential job runs two distinct phases.

Frame stage (first fix carpentry):

Floor framing (joists, bearers, sheet flooring or strip flooring base)
Wall framing (plates, studs, lintels, noggings)
Roof framing (trusses, conventional cut-and-pitch, hips, valleys, dormers)
Bracing, tie-down, hold-down per AS 1684
Pad-outs and noggings for other trades (vanity bracket, TV mount, grab rail, kitchen carcass, wall-hung WC)

Fix-out stage (second fix carpentry):

Internal trim: skirting, architrave, internal doors, door hardware
External trim: eaves linings, fascia, barge, verge, soffits
Decks and deck handrails
Stairs, balustrades, handrails (where timber)
Bench frames, joinery interfaces, floor coverings preparation

A lead chippy on a residential build often acts as informal site supervisor, especially on smaller jobs. They’re on site longer than any other trade.

What’s in scope (typical)

All framing per the engineer’s details and AS 1684
All blocking, noggings, pad-outs (coordinated during frame stage with the builder’s services schedule)
Internal and external timber trim
Door hanging (frames + leaves + locksets) unless joinery package excludes
Deck construction including handrails (where timber)
Stair construction (timber)

What’s out of scope (often confused)

Cabinet install: usually a separate cabinetmaker / joiner package. The chippy may install carcasses if scoped, but bench tops, splashbacks, and finished cabinetry are joinery.
Floor coverings: timber flooring may be a separate flooring contractor (especially engineered or pre-finished). Strip-laid hardwood is sometimes chippy, sometimes flooring trade. Specify.
Wet-area waterproofing: chippy frames the wet area; the waterproofer membranes it. Don’t assume it’s the same trade.
Roof tiling or sheeting: the chippy frames the roof; the roofer tiles or sheets. Clear demarcation at the sarking and battens.
Plasterboard: the lining trade. Chippy provides the frame; plasterer lines and finishes.

The quote or scope of works should specify who installs which item. Most variations on residential jobs land on these scope edges.

Engagement basics

Licensing, state-by-state

State	Scheme	Key threshold or rule
NSW	Fair Trading contractor licence	Required for work over $5,000 (labour + materials, including GST). Penalty for unlicensed work is up to $22,000 (individual) / $110,000 (company) under the Home Building Act 1989.
VIC	VBA Domestic Builder Limited (Carpentry) registration	Min 2 years practical experience in last 7 years; technical references required from registered Domestic Builder. VBA transitioning to Building & Plumbing Commission.
QLD	QBCC trade contractor licence (Carpentry) or occupational licence	Trade contractor for independent work; occupational for employees of a contractor licensed for the same scope. Cert III + BSBESB402 management course typical. ~8 weeks processing.
WA, SA, TAS, NT, ACT	Each state has its own scheme	Verify current threshold and qualification path with the state regulator before quoting.

Verify the current rules with the regulator before quoting work in a state you’re new to. Penalties for unlicensed work are real.

Insurance the chippy should carry (sole trader or trade contractor)

Public Liability: typical floor $5m for sole-trader residential, $10m if working under a head contractor
Workers Compensation: if any employees or apprentices
Income protection: not contractually required, but standard for sole traders relying on tools-on-the-ground income

Current Certificates of Currency for PL and Workers Comp should be sighted before any work starts. The chippy holds them. The party engaging (usually the builder, sometimes the client direct) confirms them. A screenshot from last year doesn’t cut it.

Day rate vs lump sum

Both are common. Day rate suits messy, evolving scope (renovation, integration, lots of pad-outs). Lump sum suits well-documented work with clear drawings (frames against engineer’s details, fix-out against finishes schedule). Be clear which one the contract is, and which one variations get priced under.

Tolerances and acceptance

Chippy work is judged at PCI against contract spec, AS 1684 (for framing), and the HIA Guide to Materials and Workmanship plus the relevant state Guide to Standards and Tolerances (for finished work).

What the Guides cover for chippy work

Item	Guide coverage
Wall plumb	Numerical limit per current HIA Guide and state guide. Pending HIA member access. [HIA-005]
Wall flatness under a long straightedge	Numerical limit per HIA Guide and state guide. Pending. [HIA-006]
Door frame plumb and square	Limits on plumb deviation and jamb distortion. Pending. [HIA-007]
Architrave mitre tightness and flatness	Qualitative plus numerical limits. Pending. [HIA-008]
Skirting flat to floor and tight to wall	Qualitative plus gap limits. Pending. [HIA-009]
Decking gap consistency and end cuts	Qualitative plus spacing range. Pending. [HIA-010]
Visual viewing distance for inspection	Per HIA Guide convention. Pending current numerical distance. [HIA-011]

Framing

AS 1684 (parts 1 to 4, residential timber-framed construction) is the deemed-to-satisfy reference under the NCC for Class 1 and Class 10 buildings. It covers stud spacing, wall bracing, tie-down, span tables, and connection details. Frame stage is judged primarily against AS 1684 and the engineer’s details where present.

Common defects to look for

What inspectors flag at PCI for chippy work:

Screw pops and nail pops in plasterboard from frame moisture movement (chippy’s frame did the moving)
Twisted studs showing through lining
Door frames out of plumb or distorted
Architrave gaps at mitres or to skirting
Skirting with daylight under it, gappy at internal corners
Decking with inconsistent gap, end-grain checking, fixings missed
Pad-out errors: vanity bracket, TV mount, or kitchen unit can’t get a fixing because the nogging isn’t where the joiner needed it
Eaves linings wavy, joints visible, badly butted
Stair geometry out of even rise / going

Most of these are caught and fixed during fix-out, before paint. The expensive ones (twisted studs, missing pad-outs) get expensive after lining.

Subbie quote pack, what should be in it

A complete chippy quote pack covers:

Scope: which items are in (frame stage and fix-out stage), which are explicitly out
Pricing basis: lump sum or day rate, with day labour rate stated for variations either way
Materials: who supplies (chippy or builder), pricing of supply, allowance treatment
Programme commitment: number of days/weeks on site, latest start date the chippy can accept
Licence and insurance: copies of current licence and Certificates of Currency for PL and Workers Comp
Site obligations: clean up after each phase, waste disposal expectation, WHS obligations including SWMS for high-risk construction work
Variation mechanism: how variations are priced, written authorisation requirement, day rate for unscoped work

The list reads the same for everyone, just from different sides:

Engaging party (usually the builder, sometimes the client direct): use this list as the subbie quote template; require all items before signing.
Chippy quoting: provide all of these without being asked, you’ll win more jobs.
Client reviewing a builder’s engagement of trades: this is the bar the builder should be applying.

Going deeper

These trade-craft articles cover the technical depth chippies actually need on the tools. All planned, audience-tagged for chippies primarily.

Setting out a hip roof: cuts, angles, common errors (planned)
Valley rafter calculations and setting out (planned)
Bird’s mouth cuts, rafter bevels (planned)
Stair construction: stringer setting out, riser and going geometry (planned)
Deck framing for sloping sites (planned)
Bracing and tie-down per AS 1684 (planned)

Builders and clients won’t read these, but they’re the reason a good chippy is worth their rate.

References

AS 1684, Residential Timber-framed Construction (Standards Australia) (verified 2026-05-02)
HIA Guide to Materials and Workmanship (Housing Industry Association) (verified 2026-05-02)
NSW Fair Trading carpentry licensing (verified 2026-05-02)
VBA Domestic Builder Limited registration (verified 2026-05-02; VBA transitioning to Building & Plumbing Commission per 2026 reforms)
QBCC Carpentry licence (verified 2026-05-02)
HIA Using AS 1684 for Timber Framing (verified 2026-05-02)
NCC 2022 Volume Two for Class 1 and Class 10 buildings (residential), ABCB (verified 2026-05-02)