Yes — building and fitting simple timber shelving inside a wardrobe is one of the most achievable DIY projects for a NZ homeowner. No building consent is required for internal shelving, and no licensed trade work is involved, so you're free to get stuck in. With some careful measuring, the right materials, and a few basic tools, you can have a tidy, functional wardrobe fit-out in a weekend.
Do You Need a Building Consent?
Internal shelving fitted inside an existing wardrobe does not require a building consent under the Building Act 2004. It falls well within the scope of exempt work under Schedule 1. That said, if you're planning to alter the wardrobe structure itself — for example, removing a load-bearing wall or changing the framing — that's a different matter entirely. Always confirm with your local council if you're unsure. You can find guidance on what requires consent at MBIE Building Performance.
Planning Your Shelving Layout
Before you buy a single piece of timber, spend time thinking about what you actually need the wardrobe to do.
- Measure carefully — height, width, and depth of the wardrobe interior. Allow for skirting boards and any obstructions.
- Decide on shelf depth — 300–400 mm is typical for folded clothes; 500–550 mm suits hanging space above.
- Plan for hanging rails — if you want a hanging section, allow at least 1,000 mm of clear height for shirts and 1,700 mm for full-length garments.
- Sketch it out — a simple pencil sketch on paper saves a lot of head-scratching later.
Choosing Your Timber and Sheet Materials
For wardrobe shelving, you have a few good options:
| Material | Pros | Cons |
|---|---|---|
| Melamine-faced particleboard | Pre-finished, easy to clean, affordable | Heavier, edges need capping |
| Plywood (structural) | Strong, holds screws well, can be painted | Needs sanding and finishing |
| Solid pine (DAR) | Attractive, easy to work with | Can bow over long spans without support |
| MDF | Smooth finish, takes paint well | Heavy, not great with moisture |
For most wardrobes, 18 mm melamine-faced particleboard or 18 mm plywood are the go-to choices. Avoid anything thinner for shelves carrying a decent load of clothes or linen — they'll sag over time. You'll find a good range at Bunnings, Mitre 10, or PlaceMakers.
Tools You'll Need
- Tape measure and pencil
- Spirit level
- Stud finder
- Circular saw or hand saw (or ask the hardware store to cut panels to size)
- Power drill and drill bits
- Screwdriver bits
- Sandpaper (120 and 180 grit)
Step-by-Step: Installing Timber Shelves
1. Find Your Wall Studs and Noggins
Use a stud finder to locate the framing behind the plasterboard. Fixing shelf supports into studs or noggins is far stronger than relying on plasterboard anchors alone. Mark stud positions lightly in pencil.
2. Mark Your Shelf Heights
Use a spirit level to draw level horizontal lines at each shelf position. Double-check your marks are level — a shelf that slopes even slightly will drive you mad every time you look at it.
3. Fix Your Shelf Supports
You have two main options:
- Timber battens (cleats) — screw a 45 × 19 mm pine batten to the back wall and side walls at each shelf level. Shelves then sit on top of these. Simple, strong, and easy.
- Shelf pins and side panels — if you're building a more cabinet-style fit-out with vertical side panels, drill a series of 5 mm holes and use adjustable shelf pins for flexibility.
Use 75 mm timber screws into studs for battens. For plasterboard-only fixing where studs aren't available, use quality plasterboard anchors rated for the load — but always prefer stud fixing where possible.
4. Cut and Fit Your Shelves
If you haven't had panels pre-cut, measure twice and cut once. Sand any rough edges. For melamine board, apply iron-on edge tape to exposed edges for a tidy finish — it's inexpensive and available at most hardware stores.
5. Fit a Hanging Rail
For hanging sections, a 19 mm steel or chrome hanging rail with end brackets is the standard approach. Fix the brackets firmly into studs or into solid timber side panels. Rails are available pre-cut or by the metre.
6. Finishing Touches
If you've used plywood or pine, give shelves a light sand and apply a coat of paint or clear finish. Resene and Dulux both offer interior waterborne paints that are low-odour and dry quickly — ideal for enclosed spaces.
Safety Tips
- Always wear safety glasses when cutting timber or drilling.
- Keep fingers clear of saw blades — use a guide or fence for straight cuts.
- If you're working in an older home (pre-1980s), be aware that some materials may contain asbestos. If you find anything suspicious, stop work and contact WorkSafe NZ for advice before proceeding.
- Don't overload shelves — even well-fixed shelving has limits. Spread heavy items across multiple shelves.
When to Call a Professional
While wardrobe shelving is firmly in DIY territory, there are situations where it's worth calling in a qualified joiner or carpenter:
- You want a fully custom, built-in wardrobe fit-out with doors, drawers, and a polished finish.
- The wardrobe involves structural changes to walls or framing.
- You're not confident with power tools or accurate measuring.
- You want the job done quickly and to a professional standard.
If any electrical work is needed — such as adding wardrobe lighting — that is restricted electrical work and must be carried out by a registered electrician. See the Electrical Workers Registration Board for more information. Similarly, any plumbing work must be done by a licensed plumber registered with the Plumbers Gasfitters & Drainlayers Board.
You can find experienced local joiners and carpenters on tradedirectory.co.nz.
