Building a shed is one of the best ways to add storage, workspace, or value to your Perth property. But there’s an important choice to make early: do you go for a kit shed you assemble yourself, or invest in a custom design built by professionals?
This guide explores the pros and cons of custom vs kit sheds in Perth, including costs, permits, climate considerations, and long-term value.
What are Kit Sheds?
Kit sheds are pre-manufactured, flat-packed structures delivered to your property with assembly instructions. They’re designed for DIY installation and are usually the more budget-friendly option.
Pros of Kit Sheds:
- Lower upfront cost compared to custom builds
- Faster delivery times
- Good for simple storage or hobby use
Cons of Kit Sheds:
- Limited size and design options
- Typically low quality imported material
- Requires DIY skills and tools
- Still needs council approval and a solid foundation
- No professional warranty on installation
What are Custom Sheds?
Custom sheds are designed to your specifications and professionally built on-site. They can match your home’s style, integrate with existing structures, and offer more flexibility.
Advantages of Custom Sheds:
- Tailored size, roof style, and layout
- Built by experts for strength and durability
- Professional installation and clean finish
- Includes warranty and aftercare support
Custom sheds can also be designed to complement outdoor patio designs in Perth or even connect with custom carports in Perth for a sleek backyard setup.
Council Approvals and Regulations
Whether you choose a kit or custom shed, most sheds in Perth require a building permit if they are larger than 10m², higher than 2.4m, or closer than the minimum setback to a boundary. According to the City of Perth Building Services, you will need:
- Site plan and elevations
- Structural details or engineering certification
- Payment of applicable fees
Professional shed builders usually manage this process for you, while kit shed owners must prepare and lodge documents themselves.
Cost Comparison: Kit vs Custom Shed in Perth
| Feature | Kit Shed | Custom Shed |
| Price Range | $2,500 – $6,000 | $8,000 – $15,000+ |
| Assembly | DIY or hire a contractor | Included in price |
| Permit Handling | DIY | Managed for you |
| Warranty | Manufacturer only | Manufacturer + workmanship |
| Design Flexibility | Limited to available sizes | Fully customisable |
Hidden Costs to Consider
Even though kit sheds look cheaper upfront, Australian homeowners often face additional expenses:
| Hidden Cost | Typical Price (AUD) | Notes |
| Concrete Slab | $2,000 – $4,000 | Essential for stability and council compliance |
| Council Permit Fees | $300 – $900 | Varies by local government |
| Delivery Charges | $150 – $500 | Depends on size and distance |
| Extra Tools / Equipment | $300 – $600 | Ladders, drills, PPE, and concreting tools |
| Labour Hire (if DIY becomes difficult) | $50 – $90 per hour | Hiring a contractor can eat into savings |
When you add these costs, a kit shed may approach the cost of a basic custom shed but without the warranty or professional finish.
Climate and Material Considerations
Perth’s hot summers, UV exposure, and occasional storms mean material choice matters. Professional builders can recommend wind-rated steel, Colorbond cladding, and roof pitches that prevent water pooling. DIY kits may not always be designed for your exact wind region, so double-check specifications before buying.
Our custom sheds are built with high-tensile steel stud frames, ensuring durability, rust resistance, and long-lasting quality. This superior construction not only guarantees strength but also gives you the flexibility to upgrade your shed into an entertainment area, workshop, or any other space you envision.
Site Preparation and Foundations
One crucial factor that many guides skip over is proper site preparation. A shed is only as strong as the base it sits on.
Professionals typically check soil stability, ensure appropriate compaction, and create a level concrete slab with a drainage fall so rainwater flows away from the structure. Poorly prepared sites can lead to rust, flooding, or structural failure over time. If you’re considering DIY, budget for soil prep and concrete work is a requirement for council approval and long-term durability.
Long-Term Value
A well-built custom shed can add significant value to your property, especially if integrated with other structures like patios or modular granny flat buildings. Professional builds tend to last longer, require less maintenance, and can be insured more easily.
Get Expert Help with Your Shed Project
Whether you want a simple kit shed or a fully customised solution, Phoenix Patios can help. Our custom patio builders in Perth can handle approvals, foundations, and construction, ensuring your shed is built right the first time.
We also integrate sheds with carports or outdoor living areas for a complete backyard transformation.
Frequently Asked Questions
Yes, most sheds need a building permit unless they are very small (under 10m², under 2.4 m high, and meeting setback rules). If your shed is bigger or closer to a boundary, you’ll need to submit plans and pay council fees. See the WA Government outbuilding fact sheet for full details.
Kit sheds can be assembled over a weekend with help, while custom sheds usually take a few days once permits are approved.
If you have time and skills, a kit shed can save money. For a long-lasting, professionally finished structure, custom is the better investment.