House Extension Price Tips: How To Save On The Cost To Extend House Without Cutting Corners in Johannesburg, Roodepoort, Sandton, Randburg, Eastrand, Midrand, Centurion & Pretoria
Ever thought about how much it costs to make your home bigger? The house extension price can be a smart investment—especially with property prices going up in South Africa, it’s often cheaper to add more space than move.
This guide is all about the costs of making your home bigger in 2025. If you’re thinking of adding more space in Gauteng, this guide has cost expectations and planning insights for you.
In Gauteng, homeowners might spend R15,000 to R25,000 per square metre for quality additions. This cost can change based on where you are, the materials used, and how complex the design is. For example, a ground floor extension of 80 square metres could cost between R560,000 and R1,200,000.
About 60% of Gauteng homeowners choose to add more space sideways, while 25% prefer a second storey. Each choice has its own costs and benefits to think about.
At Handyman Johannesburg, we’ve put this guide together based on current trends and our experience. We’ve worked on projects all over Johannesburg, Sandton, Pretoria, and Gauteng. Whether you want a bigger kitchen, more bedrooms, or a multi-functional living area, knowing these costs will help you plan your budget – Contact Us
Understanding House Extension Price Factors in South Africa
When you want to add more space to your home in South Africa, knowing what affects the cost is key. The price of your extension depends on many things. These things change a lot depending on where you are and what you want. At Handyman Johannesburg, we know how important planning your budget is.
The cost of an extension usually includes materials, labour, and professional fees. Each part can change based on your location, design, and what you choose. Knowing this helps you make a good budget and choose wisely.
The true cost of a house extension isn’t just in the initial quote. It’s in understanding how each decision you make—from material selection to professional expertise—impacts both your immediate expenditure and long-term property value.
Material Costs and Quality Considerations
The materials you pick for your extension greatly affect your budget. Choosing high-quality materials can make your extension more expensive. But, they last longer and look better.
There are many materials to choose from, each with its own price. High-end options like face bricks and engineered timber cost more but look and perform better. Cheaper materials are good for those watching their budget but might not last as long.
Choosing materials is not just about looks. It also affects how well your extension keeps warm, how easy it is to maintain, and how long it lasts. Spending more on quality materials can save you money in the long run.
Current Market Prices in 2025
In 2025, the prices of building materials will depend on quality and market trends. Knowing the current prices helps you plan better and talk to suppliers.
| Material Type | Standard Quality | Mid-Range | Premium Quality |
|---|---|---|---|
| Bricks (per 1000) | R1,600 – R2,200 | R2,300 – R3,500 | R3,600 – R6,000 |
| Roof Tiles (per 1000) | R1,300 – R2,000 | R2,100 – R3,000 | R3,100 – R4,000 |
| Concrete (per cubic metre) | R1,000 – R1,200 | R1,300 – R1,400 | R1,500+ |
| Flooring (per square metre) | R200 – R400 | R450 – R700 | R750 – R1,500+ |
For a 100m² extension, the foundation alone can cost from R23,000. Adding premium finishes can increase your costs by 30-50%. Prices change based on availability, import costs, and the economy.
Labour Costs Across Different Regions
Labour costs usually make up about 65% of the total cost. Where you live can greatly affect how much you pay. Cities like Johannesburg charge more than smaller towns.
In Johannesburg and Sandton, skilled workers charge between R350 and R750 per hour. In smaller towns, rates are 20-30% lower. These differences come from living costs, demand, and local economy.
Specialised workers like electricians and plumbers charge more than general builders. When planning, remember these differences based on your project’s needs.
At Handyman Johannesburg, we’ve seen labour costs in Gauteng are 15-25% higher than the national average. This is due to the high cost of living and demand for quality work. But, this often means better work and management.
Professional Fees: Architects, Engineers, and Project Managers – House Extension Price
Many people forget about professional fees when budgeting for extensions. These fees are important because they ensure your project is done right and looks good.
Architects charge 5-10% of the total cost, with smaller projects paying more. For complex designs, this percentage can go up. Their skill makes sure your extension works well and looks great.
Structural engineers are key for safety and compliance, charging about 2% of the cost. You might also need:
- Land surveyors (up to 5% of project cost)
- Quantity surveyors (up to 4% of project cost)
- Project managers (8-12% of project cost)
While these fees seem high, they prevent costly mistakes and delays. A well-designed extension by experts adds more value than one done without proper guidance.
For a detailed extension cost consultation, Handyman Johannesburg breaks down all costs. This helps you understand where your money goes and how to spend it wisely.
Common House Extension Types and Their Costs – House Extension Price
House extensions come in many forms, each with its own price tag. South African homeowners should think about these costs before starting. Handyman Johannesburg has done many extension projects in Gauteng and has cost data to help you plan.
Single and Double Storey Extensions
Single-storey extensions are the most popular choice in 2025. They offer great value and don’t disrupt your home much during construction.
A standard 30 square metre single-storey extension costs between R210,000 and R450,000. This works out to R7,000 to R15,000 per square metre, depending on your choices.
Cost Per Square Metre Breakdown
The cost of an extension isn’t spread evenly. Knowing this helps you see where your money goes and where you might save:
| Extension Component | Percentage of Total Cost | Cost Range (per m²) | Notes |
|---|---|---|---|
| Foundation Work | 15-20% | R1,050-R3,000 | Varies with soil conditions |
| Structural Elements | 25-30% | R1,750-R4,500 | Walls, beams, columns |
| Roofing | 15-20% | R1,050-R3,000 | Includes insulation |
| Interior Finishes | 30-40% | R2,100-R6,000 | Flooring, painting, fixtures |
Double-storey extensions offer more space but cost more. They’re about 50% pricier than single-storey ones. But, they’re better value in the long run because they use the same foundation and roof.
The time it takes to finish your extension affects costs. Single-storey extensions take 8-12 weeks. Double-storey ones take 12-16 weeks. Proper planning and working with experienced contractors like Handyman Johannesburg can help keep your project on track.
Kitchen and Living Room Extensions
Kitchen extensions add a lot of value to homes. The cost varies based on the quality of finishes and appliances.
Basic kitchen renovations start at R45,000. High-end ones with premium appliances and finishes start at R150,000. The price difference is due to aesthetic choices and material quality.
Living room extensions cost between R7,000 and R13,000 per square metre. They often need less plumbing and electrical work than kitchens, making them cheaper. But, larger windows and open-plan designs can increase costs.
Combined kitchen-living room extensions are popular for creating family hubs. They cost between R9,000 and R16,000 per square metre. Plumbing and electrical work can make up to 25% of the total cost.
Bedroom Additions and Granny Flats
Bedroom extensions are generally cheaper, costing R8,000 to R12,000 per square metre. They require fewer special fixtures than kitchens or bathrooms.
Adding an en-suite bathroom to a bedroom extension increases the cost. Bathroom additions can range from R30,000 for budget renovations to R120,000+ for high-end ones.
Granny flats and self-contained units are more expensive. They include bedroom, bathroom, kitchenette, and living areas, costing between R10,000 and R15,000 per square metre. They’re popular for multi-generational living or as rental properties.
Garage, Loft, and Basement Conversions
Converting existing spaces is a cost-effective way to extend your home. Garage conversions start from R5,000 per square metre, making them very affordable.
Loft conversions use roof space and cost between R6,000 and R11,000 per square metre. The price depends on structural needs and access type. Dormer loft conversions, which increase headroom, are more expensive than simple skylight conversions.
Basement extensions are the most complex and expensive option, costing R12,000 to R20,000 per square metre. They involve excavation, waterproofing, and structural reinforcement. But, in high-value areas like Sandton, they can be worth the investment.
All conversion projects need careful planning of insulation, lighting, and ventilation. Handyman Johannesburg specialises in these types and can provide tailored quotes based on your needs and location in Gauteng.
Regional House Extension Price Guide: Gauteng and Beyond
House extension prices vary greatly depending on where you are in South Africa. Costs in Johannesburg are different from those in Pretoria or other provinces. Knowing these differences helps you plan your budget better.
Johannesburg and Sandton Premium Rates
In Johannesburg and Sandton, prices are higher. These areas are more expensive, with costs ranging from R12,000 to R25,000 per square metre. This is because of the high property values.
At Handyman Johannesburg, we see that these areas offer good returns on investment. The home addition cost here reflects the high value of the properties.
Luxury Extensions in Affluent Areas
In areas like Sandton, Hyde Park, and Houghton, prices go up to R25,000+ per square metre. These extensions have unique designs, imported materials, and advanced systems. They greatly increase the house extension investment value.
A 40-square-metre extension in Sandton could cost between R720,000 and R1,000,000. This is due to the high-quality materials and finishes.
Standard Extensions in Suburban Areas
In suburban Johannesburg, prices are more reasonable. Here, the property addition price is between R10,000 and R15,000 per square metre. These extensions use local materials and standard finishes, keeping costs down.
A 30-square-metre bedroom addition in these areas costs between R300,000 and R450,000. This is a good balance of cost and quality.
Pretoria and Centurion Extension Costs
Pretoria and Centurion have slightly lower prices than Johannesburg. Prices range from R8,000 to R15,000 per square metre. Established suburbs in Pretoria East tend to be more expensive.
We’ve done many projects here. Clients usually budget R240,000 to R450,000 for a 30-square-metre extension. The turnkey extension price in Pretoria often includes bigger outdoor spaces, reflecting local preferences.
Other Gauteng Areas: Midrand, Randburg, and Roodepoort
In Midrand, Randburg, and Roodepoort, prices are more competitive. Costs range from R7,000 to R12,000 per square metre. These areas offer great value for those looking to save money without sacrificing quality.
These areas have a growing construction market, leading to innovative, cost-effective building methods. For those on a tight budget, a shell only extension cost approach can save 30-40%. This allows for gradual interior finishing as funds allow.
Many clients in these areas prefer phased payment plans. These plans are tied to construction milestones, not upfront payments.
Price Comparisons with Other South African Provinces
Prices vary across provinces. KwaZulu-Natal has the highest cost at R16,700 per square metre. North West has the lowest at R9,100 per square metre.
| Province | Average Cost (per sqm) | Relative to Gauteng | Key Extension Price Variables |
|---|---|---|---|
| KwaZulu-Natal | R16,700 | +11% | Coastal conditions, luxury market |
| Gauteng | R15,000 | Baseline | Urban density, high demand |
| Western Cape | R14,800 | -1.3% | Tourism influence, space constraints |
| North West | R9,100 | -39% | Lower labour costs, land availability |
It’s vital to consult local experts like Handyman Johannesburg for your extension plans. We provide quotes tailored to your area, ensuring your financing a house extension plan is accurate and up-to-date.
Planning Your House Extension with Handyman Johannesburg – House Extension Price
Are you ready to start your house extension project? Handyman Johannesburg is here to guide you every step of the way. Our team will listen to your needs and budget to create a plan just for you.
Planning is key for a successful extension. Small updates might take days, but big changes can take months. We’ll help you set realistic timelines for design, permits, and unexpected delays.
Our house extension price Johannesburg quotes are clear and detailed. We break down costs so you can understand your investment. Whether you need a Sandton house extension price or a Pretoria home extension cost analysis, we’ve got you covered.
Johannesburg homeowners must follow local building rules carefully. Our team takes care of permits, saving you time and avoiding legal problems. We know the rules in Gauteng, including cost to extend house Randburg, Centurion extension quote, and Midrand building extension cost.
We offer Roodepoort house extension price estimate services and Benoni affordable house extension solutions. Our home extension price list offers great value without sacrificing quality. We consider Alberton extension cost per square metre for all projects.
Get in touch with Handyman Johannesburg today. Let us help you extend your home with a professional touch that adds value and space.
