Building Advice

Building & Renovation Tips for Sydney

Straightforward, practical advice for homeowners — costs, approvals, extensions, renovations, granny flats and more. Rizon Builders works across Parramatta, Bondi, Chatswood, Newtown, Manly, Cronulla and all of Sydney.

Costs

How Much Does It Cost to Build a Custom Home in Sydney?

What really drives the price of a new custom home — and how to read a builder's quote properly.

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Planning

Knockdown Rebuild vs Renovation: Which Is Right for You?

Should you renovate the home you have, or knock it down and start fresh? Here's how to decide.

Read article →
Planning

How Long Does a Home Extension Take?

From first plans to handover — a realistic timeline for a Sydney home extension.

Read article →
Planning

Second Storey Addition: What You Need to Know Before You Build

Adding a second storey is a smart way to gain space without losing your yard. Here's what's involved.

Read article →
Investment

Granny Flats in NSW: Rules, Costs, and Rental Returns

A granny flat can add rental income or space for family. Here's how the rules and numbers work in NSW.

Read article →
Costs

Kitchen Renovation Costs in Sydney: A Real Breakdown

Where your kitchen renovation budget actually goes — and where you can save without cutting corners.

Read article →
Renovations

Bathroom Renovations: How to Avoid the Most Common Mistakes

The bathroom is the easiest room to get wrong. Here are the mistakes that cause the most grief.

Read article →
Approvals

Do You Need Council Approval for Your Build? (NSW Guide)

DA, CDC, or exempt? A plain-English guide to approvals for your Sydney building project.

Read article →
Choosing

How to Choose the Right Builder in Sydney

Your builder makes or breaks the project. Here's how to choose one you can trust.

Read article →
Contracts

Fixed-Price vs Cost-Plus Building Contracts Explained

The contract type shapes your risk and budget. Here's the difference in plain English.

Read article →
Investment

Duplex Developments: Is Your Block Suitable?

A duplex can turn one block into two homes and strong returns — if the land stacks up. Here's how to tell.

Read article →
Renovations

How to Get Your Home Ready for a Major Renovation

A little preparation makes a big renovation run smoother. Here's how to get set before the team arrives.

Read article →
← All articles Costs & Budgeting

How Much Does It Cost to Build a Custom Home in Sydney?

Building a custom home is one of the biggest investments you'll make, and the price depends heavily on your choices. Knowing what drives the cost helps you plan a realistic budget and compare builders fairly.

The big cost drivers

  • Size and number of storeys — more floor area and a second storey both add cost.
  • Site conditions — a sloping block, poor soil, or tricky access adds to the foundation and labour.
  • Level of finish — the difference between standard and premium fixtures, stone, and joinery is large.
  • Design complexity — simple rectangular designs cost less than highly custom shapes.

How to read a quote properly

Always compare quotes on a like-for-like basis. A cheaper quote often has a lower allowance for tiles, appliances, or landscaping — so you pay the difference later as a variation. Ask for an itemised quote and check the inclusions list carefully.

Build in a contingency

Even on a fixed-price contract, set aside around 5–10% for changes you decide to make along the way. A good builder will walk you through the inclusions before you sign so there are no surprises.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Planning

Knockdown Rebuild vs Renovation: Which Is Right for You?

Should you renovate the home you have, or knock it down and start fresh? Here's how to decide.

Read article →
Planning

How Long Does a Home Extension Take?

From first plans to handover — a realistic timeline for a Sydney home extension.

Read article →
Planning

Second Storey Addition: What You Need to Know Before You Build

Adding a second storey is a smart way to gain space without losing your yard. Here's what's involved.

Read article →
← All articles Planning

Knockdown Rebuild vs Renovation: Which Is Right for You?

If your current home no longer suits you but you love the location, you have two main options: renovate, or knock down and rebuild. The right choice depends on the house, your goals, and your budget.

When renovation makes sense

  • The structure is sound and worth keeping.
  • You only want to change part of the home.
  • You want to keep original character features.

When a knockdown rebuild makes sense

  • The home has major structural or layout problems.
  • You want a completely modern, efficient design.
  • Renovating would cost almost as much as rebuilding.

The hidden factor: renovating old homes

Older homes often hide surprises — asbestos, outdated wiring, rotten framing — that push renovation costs up mid-project. A rebuild gives you a fixed price and a brand-new, warrantied home. A builder can assess your home and give you honest advice on which path gives the better result for your budget.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Planning

How Long Does a Home Extension Take?

From first plans to handover — a realistic timeline for a Sydney home extension.

Read article →
Planning

Second Storey Addition: What You Need to Know Before You Build

Adding a second storey is a smart way to gain space without losing your yard. Here's what's involved.

Read article →
Investment

Granny Flats in NSW: Rules, Costs, and Rental Returns

A granny flat can add rental income or space for family. Here's how the rules and numbers work in NSW.

Read article →
← All articles Planning

How Long Does a Home Extension Take?

A home extension is one of the best ways to add space and value, but many people underestimate the timeline. The build itself is only part of the story.

The phases

  1. Design and plans (4–8 weeks): concept, drawings, and engineering.
  2. Approvals (4–12 weeks): council development approval or a faster complying development certificate, depending on your project.
  3. Construction (8–20 weeks): depends on size — a single room is quick, a large two-storey extension takes longer.

What causes delays

The most common delays are approvals, weather, and mid-project design changes. Choosing a builder who manages the design, approvals, and build together keeps things moving and avoids gaps between stages.

Living through it

You can often stay in the home during an extension, since the new section is built alongside the existing one. Your builder will seal off the work zone to keep dust and disruption down.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Planning

Second Storey Addition: What You Need to Know Before You Build

Adding a second storey is a smart way to gain space without losing your yard. Here's what's involved.

Read article →
Investment

Granny Flats in NSW: Rules, Costs, and Rental Returns

A granny flat can add rental income or space for family. Here's how the rules and numbers work in NSW.

Read article →
Costs

Kitchen Renovation Costs in Sydney: A Real Breakdown

Where your kitchen renovation budget actually goes — and where you can save without cutting corners.

Read article →
← All articles Planning

Second Storey Addition: What You Need to Know Before You Build

When you love your block but need more room, building up instead of out is often the smartest move — you gain bedrooms and bathrooms without giving up backyard.

Can your home take a second storey?

Not every home can be built on top of directly. A structural engineer checks whether your existing footings and walls can carry the extra load. Sometimes the ground floor needs reinforcing first, which affects the cost.

What's involved

  • Engineering assessment of the existing structure.
  • Design that matches the new storey to your home.
  • Council or certifier approval.
  • Temporary weather protection while the roof is off.

Living arrangements

Because the roof comes off during the build, many families move out for part of the project. A good builder plans the schedule to keep this window as short as possible and protects the home from weather throughout.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Investment

Granny Flats in NSW: Rules, Costs, and Rental Returns

A granny flat can add rental income or space for family. Here's how the rules and numbers work in NSW.

Read article →
Costs

Kitchen Renovation Costs in Sydney: A Real Breakdown

Where your kitchen renovation budget actually goes — and where you can save without cutting corners.

Read article →
Renovations

Bathroom Renovations: How to Avoid the Most Common Mistakes

The bathroom is the easiest room to get wrong. Here are the mistakes that cause the most grief.

Read article →
← All articles Investment

Granny Flats in NSW: Rules, Costs, and Rental Returns

Granny flats are one of the most popular ways to add value and income to a property in NSW. They suit family, guests, teenagers, or a rental return.

The NSW rules (in brief)

  • Your block generally needs to be at least 450m² with a minimum width.
  • The granny flat can be up to 60m² of internal living area.
  • Many can be approved quickly as a complying development rather than a full council application.

Rules change over time and vary by council — always confirm current requirements before you commit.

The numbers

A granny flat is a relatively low-cost build compared to a full home, and a well-designed one can add strong rental income and lift your property's value. Because it's a small, self-contained build, the timeline is usually shorter than a major renovation.

Getting it right

Good design makes a small space feel open and livable. A builder experienced with granny flats will maximise the layout, light, and storage while keeping the whole project compliant.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Costs

Kitchen Renovation Costs in Sydney: A Real Breakdown

Where your kitchen renovation budget actually goes — and where you can save without cutting corners.

Read article →
Renovations

Bathroom Renovations: How to Avoid the Most Common Mistakes

The bathroom is the easiest room to get wrong. Here are the mistakes that cause the most grief.

Read article →
Approvals

Do You Need Council Approval for Your Build? (NSW Guide)

DA, CDC, or exempt? A plain-English guide to approvals for your Sydney building project.

Read article →
← All articles Costs & Budgeting

Kitchen Renovation Costs in Sydney: A Real Breakdown

The kitchen is the heart of the home and one of the best renovations for adding value. Costs vary widely depending on your choices, so it helps to know where the money goes.

Where the budget goes

  • Cabinetry and joinery — usually the biggest single cost.
  • Benchtops — laminate, stone, and engineered stone vary a lot in price.
  • Appliances — a wide range depending on brand and spec.
  • Trades — plumbing, electrical, tiling, and painting.

Where you can save

Keeping the existing layout — so the plumbing and electrical stay roughly where they are — saves a surprising amount. Splurging on the benchtop and handles while keeping cabinetry simple also gives a high-end look for less.

Avoid the false economy

Cutting corners on waterproofing, cabinetry quality, or trades usually costs more later. A fixed-price quote from an experienced builder protects you from mid-project blowouts.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Renovations

Bathroom Renovations: How to Avoid the Most Common Mistakes

The bathroom is the easiest room to get wrong. Here are the mistakes that cause the most grief.

Read article →
Approvals

Do You Need Council Approval for Your Build? (NSW Guide)

DA, CDC, or exempt? A plain-English guide to approvals for your Sydney building project.

Read article →
Choosing

How to Choose the Right Builder in Sydney

Your builder makes or breaks the project. Here's how to choose one you can trust.

Read article →
← All articles Renovations

Bathroom Renovations: How to Avoid the Most Common Mistakes

A bathroom renovation adds real value, but it's also the room where mistakes are most expensive to fix — because water and tiling are unforgiving.

The most common mistakes

  • Poor waterproofing. The number-one cause of failed bathrooms. It must be done to standard by a licensed applicator.
  • Bad falls to the drain. If the floor isn't graded correctly, water pools instead of draining.
  • Not enough ventilation. Leads to mould and damage over time.
  • Cheap fittings in wet areas. They corrode and fail fast.

Why it pays to use a builder

A licensed builder coordinates the waterproofer, tiler, plumber, and electrician in the right order — which is where DIY and cut-price jobs usually go wrong. Everything is done to the National Construction Code and backed by a workmanship guarantee.

Plan before you demolish

Decide on your layout, fittings, and tiles before work starts. Changing your mind mid-build is where costs and delays creep in.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Approvals

Do You Need Council Approval for Your Build? (NSW Guide)

DA, CDC, or exempt? A plain-English guide to approvals for your Sydney building project.

Read article →
Choosing

How to Choose the Right Builder in Sydney

Your builder makes or breaks the project. Here's how to choose one you can trust.

Read article →
Contracts

Fixed-Price vs Cost-Plus Building Contracts Explained

The contract type shapes your risk and budget. Here's the difference in plain English.

Read article →
← All articles Approvals

Do You Need Council Approval for Your Build? (NSW Guide)

One of the first questions on any build is whether you need council approval — and what type. In NSW there are three broad paths.

The three paths

  • Exempt development: small works (like a small deck or minor repairs) that need no approval, as long as they meet the rules.
  • Complying Development Certificate (CDC): a fast-track approval for straightforward projects that meet set standards — often issued by a private certifier in weeks rather than months.
  • Development Application (DA): a full council application for larger or non-standard projects. This takes longer and involves more assessment.

Which path applies depends on your project, your block, and your council — always confirm before you start.

How a builder helps

An experienced builder can tell early on which path your project is likely to take, and our design and project management service handles the plans, engineering, and lodgement for you. Getting this right at the start avoids expensive delays later.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Choosing

How to Choose the Right Builder in Sydney

Your builder makes or breaks the project. Here's how to choose one you can trust.

Read article →
Contracts

Fixed-Price vs Cost-Plus Building Contracts Explained

The contract type shapes your risk and budget. Here's the difference in plain English.

Read article →
Investment

Duplex Developments: Is Your Block Suitable?

A duplex can turn one block into two homes and strong returns — if the land stacks up. Here's how to tell.

Read article →
← All articles Choosing a Builder

How to Choose the Right Builder in Sydney

Choosing the right builder is the single most important decision in your project. A good one saves you money, stress, and time; the wrong one does the opposite.

What to check

  • Licence and insurance. Confirm they hold a current builder's licence and the right insurance for your project.
  • Recent work. Ask to see completed projects similar to yours, and talk to past clients if you can.
  • Clear, itemised quotes. A professional builder gives you a detailed inclusions list, not a one-line price.
  • Communication. You'll work with them for months — make sure they're responsive and easy to deal with.

Red flags

Be cautious of a quote far below the others, pressure to pay large deposits up front, or vague contracts. These are the most common signs of a job that ends badly.

The bottom line

Pick the builder you trust to communicate honestly and stand behind their work — not just the cheapest number on paper.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Contracts

Fixed-Price vs Cost-Plus Building Contracts Explained

The contract type shapes your risk and budget. Here's the difference in plain English.

Read article →
Investment

Duplex Developments: Is Your Block Suitable?

A duplex can turn one block into two homes and strong returns — if the land stacks up. Here's how to tell.

Read article →
Renovations

How to Get Your Home Ready for a Major Renovation

A little preparation makes a big renovation run smoother. Here's how to get set before the team arrives.

Read article →
← All articles Contracts

Fixed-Price vs Cost-Plus Building Contracts Explained

When you build, the type of contract matters as much as the price. The two most common are fixed-price and cost-plus, and they split the risk very differently.

Fixed-price contracts

You agree on a set price for a defined scope of work. As long as you don't change the scope, that's what you pay. The builder carries the risk of cost overruns.

  • Best for: most homeowners who want budget certainty.
  • Watch: variations — changes you request are charged on top.

Cost-plus contracts

You pay the actual cost of materials and labour, plus an agreed margin. It can suit complex or unknown projects, but you carry the risk if costs rise.

  • Best for: renovations with lots of unknowns.
  • Watch: the final figure isn't locked in.

Our approach

For most home builds and renovations, we recommend a clear fixed-price contract with a detailed inclusions list, so you know exactly what you're paying before work starts.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Investment

Duplex Developments: Is Your Block Suitable?

A duplex can turn one block into two homes and strong returns — if the land stacks up. Here's how to tell.

Read article →
Renovations

How to Get Your Home Ready for a Major Renovation

A little preparation makes a big renovation run smoother. Here's how to get set before the team arrives.

Read article →
Costs

How Much Does It Cost to Build a Custom Home in Sydney?

What really drives the price of a new custom home — and how to read a builder's quote properly.

Read article →
← All articles Investment

Duplex Developments: Is Your Block Suitable?

Building a duplex — two homes on one block — is a popular way to boost the value and income of a property. But not every block is suitable, so it pays to check early.

What makes a block suitable

  • Land size and width. Councils set minimums for dual occupancy and subdivision.
  • Zoning. The block must be zoned to allow a duplex or dual occupancy.
  • Shape and slope. A flat, regular block is easier and cheaper to build on.
  • Services and access. Sewer, stormwater, and street frontage all matter.

Requirements vary by council — a feasibility check is the safest first step.

The upside

A well-planned duplex lets you sell or rent two homes instead of one, often significantly increasing the return on the land. You can live in one and rent the other, or sell both.

Start with feasibility

Before committing, get a builder and designer to assess the block's potential, likely costs, and approval path. It's the step that saves the most money and disappointment.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Renovations

How to Get Your Home Ready for a Major Renovation

A little preparation makes a big renovation run smoother. Here's how to get set before the team arrives.

Read article →
Costs

How Much Does It Cost to Build a Custom Home in Sydney?

What really drives the price of a new custom home — and how to read a builder's quote properly.

Read article →
Planning

Knockdown Rebuild vs Renovation: Which Is Right for You?

Should you renovate the home you have, or knock it down and start fresh? Here's how to decide.

Read article →
← All articles Renovations

How to Get Your Home Ready for a Major Renovation

A major renovation is exciting, but it's also disruptive. A bit of preparation before work starts makes the whole project run more smoothly for you and the build team.

Before the build starts

  1. Finalise your decisions. Lock in your layout, fittings, tiles, and colours early. Changes mid-build cost the most.
  2. Declutter and store. Clear the work zones and pack away valuables and breakables.
  3. Plan your living arrangements. Decide whether you'll stay or move out, and set up a temporary kitchen if needed.
  4. Tell your neighbours. A quick heads-up about noise and deliveries goes a long way.

During the build

Agree on a single point of contact with your builder and a regular check-in. Clear communication is what keeps a big project on track and stress-free.

Trust the process

Renovations always look worse before they look better. A good builder keeps the site safe and tidy and keeps you updated at each stage so you always know what's happening.

Planning a build or renovation in Sydney?

Rizon Builders works across Sydney — including Parramatta, Bondi, Chatswood, Newtown, Manly and Cronulla. Licensed, insured, fixed-price quotes, and a workmanship guarantee.

ParramattaBondiChatswoodNewtownManlyCronullaView all services

Read next

Costs

How Much Does It Cost to Build a Custom Home in Sydney?

What really drives the price of a new custom home — and how to read a builder's quote properly.

Read article →
Planning

Knockdown Rebuild vs Renovation: Which Is Right for You?

Should you renovate the home you have, or knock it down and start fresh? Here's how to decide.

Read article →
Planning

How Long Does a Home Extension Take?

From first plans to handover — a realistic timeline for a Sydney home extension.

Read article →