Sunroom Extensions To Fill Your Space with Natural Light

We specialise in creating seamless sunroom extensions that flood your Sydney home with natural light while adding valuable living space. From initial design through council approvals to final construction, we manage every aspect of your sunroom project.

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Sunroom Extension Sydney

Is It Cheaper to Build a Sunroom or an Extension?

Yes, sunrooms generally cost 40% – 50% less than traditional extensions due to the use of lighter materials and less stuctural engineering requirements. Here is a direct cost comparison:

Sunroom Extension Costs:

  • Price per square metre: $2,500-$3,500
  • 20m² sunroom: $50,000-$70,000
  • Construction time: 4-8 weeks
  • Foundation work: Minimal ($5,000-$8,000)

Traditional Brick Extension Costs:

  • Price per square metre: $5,000-$7,000
  • 20m² extension: $100,000-$140,000
  • Construction time: 12-16 weeks
  • Foundation work: Extensive ($15,000-$25,000)

Why Sunrooms Cost Less:

  • Aluminium framing vs brick and timber
  • Less excavation and concrete required
  • Faster installation means reduced labour costs
  • Council approval often simpler (CDC vs DA)
  • Less structural engineering required
  • Minimal disruption to existing services

When you choose a sunroom extension with Jonathan Homes, you’re getting premium living space at nearly half the cost of a traditional extension, without compromising on quality or comfort.

How Much Does a Sunroom Extension Cost in Sydney?

Sunroom extensions in Sydney cost $2,500-$3,500 per m². A typical 20m² sunroom ranges from $50,000-$70,000 including council approvals and BASIX.

Small Sunroom (12m² – 3m x 4m)

  • Basic Package: $30,000 – $42,000
  • Premium Package: $45,000 – $58,000
  • Includes council approvals, BASIX, standard glazing

Medium Sunroom (20m² – 4m x 5m)

  • Standard Finish: $50,000 – $70,000
  • Architectural Grade: $75,000 – $95,000
  • Includes insulated roofing, performance glass, approvals

Large Sunroom (30m² – 5m x 6m)

  • Quality Build: $75,000 – $105,000
  • Designer Specification: $100,000 – $135,000
  • Includes premium finishes, climate control, full compliance

What’s Included in These Prices

  • Council approval management (CDC or DA)
  • Structural engineering certification
  • BASIX energy compliance
  • Insulated roofing system
  • Quality aluminium framing
  • Standard installation and connections
  • 7-year structural warranty

What Affects the Final Cost

  • Site access (narrow access adds 10-15%)
  • Demolition requirements
  • Electrical and lighting upgrades
  • Premium glass options (double glazing adds 20-30%)
  • Heritage restrictions
  • Sloping blocks requiring additional engineering
Sunroom with council approval

Do I Need a Council DA for a Sunroom in Sydney?

Not always, many sunrooms qualify for fast-track approval.

No Approval Required (Exempt Development)

  • Floor area is under 20m²
  • Single storey only
  • You meet setback requirements (usually 900mm from boundaries)
  • Total additions are less than 25% of existing home
  • Not in a heritage area

Fast Approval (CDC – 10 Days)

  • Floor area is 20m² to 50m²
  • Two-storey homes
  • Closer to boundaries
  • Jonathan Homes manages this entire process

Full DA Required (6-8 Weeks)

  • Property is heritage-listed
  • Dual occupancy or strata property
  • Sunroom exceeds 50m²
  • Within foreshore building line
  • Significant tree removal required

Have a question about whether you need council approval for your sunroom? Give us a call, we’d be glad to help!

The Jonathan Homes Advantage

See how our approach can transform your home extension experience.

We Handle Everything

  • Private Certifier engagement
  • Structural engineering reports
  • BASIX certificate preparation
  • Heritage consultant coordination (if required)

You Don’t Need To

  • Hire separate consultants
  • Visit council offices
  • Understand planning jargon
  • Manage approval timelines

Beating the “Too Hot in Summer, Too Cold in Winter” Problem

Sydney Climate Solutions For Year-Round Comfort

Our Sydney sunrooms maintain comfortable temperatures year-round, typically within 3-4 degrees of your main house, even during 40-degree summers.

Low-E Glass for Sunroom

Advanced Thermal Performance

  • 100mm insulated roof panels (R2.8 rating)
  • Low-E glass blocks 75% of heat
  • Cross-ventilation design standard
  • Optional ceiling fans pre-wired
Low-E Glass for Sunroom

Orientation-Specific Solutions

  • North-facing: Adjustable external blinds included
  • West-facing: Mandatory performance glass + awnings
  • South-facing: Maximum glazing for consistent light
  • East-facing: Standard protection sufficient
5.0 Star Rated

Join hundreds of satisfied homeowners

Join other homeowevers across Sydney who have experienced the home transformations that only Jonathan Homes delivers.

Did an amazing job!

Jon and his team did an amazing job with our kitchen and bathroom renovation. He was so easy to deal with and got it all done in record time.

Stephanie Luc

On time and on budget

Demo, earthworks, retaining walls, new bedroom, bathroom, sun room, rear alfresco and driveway all done to an impeccable standard.

Rodney Richards

Great communication

Jonathan was a pleasure to deal with. He completed a large project at our Concord home in just over 3 weeks with no delays. Thanks so much!

Theva Surendra

Very High Recommendation

Built a double storey, double garage and granny flat with unparalleled professionalism. His attention to detail is amazing.

Nahir Bisso

A truly terrific builder

Jonathan did urgent renovations for our home, everything was completed on time and within budget. He and his team are highly skilled and courteous.

Ishmeet Singh

He is the action man!

I call Jonathan the action man of the building world because there are lots of moving parts and he always manages to get things done.

Mark Foley

Start Your Sunroom Journey Today

Jonathan Homes is Sydney’s trusted sunroom specialists since 2009. Fully licensed, insured, and HIA members. We’ve completed sunroom extensions across Sydney from Cronulla to Castle Hill, Bondi to Blacktown. Every project is delivered on time, on budget, with full transparency.