How much does a house extension cost in Sydney?

House extension costs in Sydney vary based on size, type, and finishes. Ground floor extensions typically cost $2,000 to $3,500 per square metre, second storey additions $3,000 to $5,000 per square metre, and granny flats $120,000 to $250,000. Factors affecting cost include: structural work required, site access, council requirements, and material choices. Resco Group provides detailed quotes with transparent pricing, tailored to your extension goals and budget.

What are the best granny flat builders Sydney?

The best granny flat builders Sydney combine design expertise, quality construction, and understanding of local regulations. Resco Group stands out with 20+ years of experience, expertise in granny flats and dual occupancy homes, and 5 star rated service. We design and build granny flats that comply with NSW regulations, maximize your property's potential, and provide excellent quality. Our granny flat builders deliver seamless integration with your existing home and exceptional craftsmanship.

Do I need council approval for a granny flat in Sydney?

Yes, granny flats in Sydney require council approval through a Development Application (DA) or Complying Development Certificate (CDC). Requirements include: minimum block size, setback requirements, height restrictions, and compliance with BASIX. Resco Group handles all council approvals and permits for your granny flat, ensuring compliance with NSW regulations and Sydney council requirements. We manage the entire approval process, making it stress-free for you.

How long does a house extension take in Sydney?

House extension timelines in Sydney vary by project type. Ground floor extensions typically take 3 to 6 months, second storey additions 4 to 8 months, and granny flats 4 to 6 months. The process includes: design and planning (1 to 2 months), council approvals (2 to 6 months), and construction (2 to 6 months). Resco Group manages every stage efficiently, coordinating trades and suppliers to minimize delays. We keep you informed throughout and work to complete your extension on schedule.

What's the difference between a granny flat and dual occupancy home?

A granny flat is a secondary dwelling on the same block as your main home, typically smaller and used for family or rental income. A dual occupancy home consists of two separate dwellings on one block, each with its own address and full independence. Granny flats are subject to size restrictions (usually max 60sqm), while dual occupancy homes can be larger. Resco Group designs and builds both, helping you choose the best option for your property and goals.

Can you build a second storey extension on my existing home?

Yes, Resco Group specialises in second storey extensions on existing homes in Sydney. We assess your home's structural capacity, design the extension to blend seamlessly with your existing architecture, and handle all engineering, council approvals, and construction. Our second storey extensions add valuable space without sacrificing your backyard, creating additional bedrooms, master suites, or home offices. We ensure minimal disruption during construction and deliver exceptional results.

What makes Resco Group different from other granny flat builders Sydney?

Resco Group stands out from other granny flat builders Sydney through: 20+ years of local experience, expertise in both granny flats and dual occupancy homes, seamless integration with existing homes, premium materials and craftsmanship, transparent pricing with no hidden costs, and deep understanding of Inner West Sydney regulations. We work closely with you to design and build extensions that maximize your property's value and meet your specific needs.

Which Inner West Sydney suburbs do you do house extensions and granny flats in?

Resco Group builds house extensions and granny flats across the Inner West Council area. Our service suburbs include: Abbotsford, Annandale, Ashbury, Ashfield, Balmain, Balmain East, Birchgrove, Burwood Heights, Camperdown, Canada Bay, Chiswick, Concord, Concord West, Croydon, Croydon Park, Drummoyne, Dulwich Hill, Enfield (part), Five Dock, Forest Lodge, Haberfield, Homebush (part), Homebush West (part), Hurlstone Park, Lewisham, Lilyfield, Marrickville, Mortlake, Newtown, North Strathfield, Petersham, Rodd Point, Rozelle, Russell Lea, St Peters, Stanmore, Strathfield (part), Summer Hill, Sydenham, and Tempe. We know local character and council rules across the Inner West.

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House Extensions Sydney
Granny Flats & Second Storeys

Granny flat builders and house extension specialists for rear additions, second storeys, and dual occupancy, designed to blend with your home across Inner West Sydney.

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Extend Your Sydney Home: Seamless, Stylish & Built to Last

Expert House Extensions & Granny Flat Builders in Inner West Sydney

Need more living space without moving? Our house extension builders deliver home extensions, granny flats, and second storey additions across Inner West Sydney, from design and CDC/DA approvals through to a seamless build that matches your existing home.

Create two separate dwellings on one block with dual occupancy homes. Ideal for multi-generational living or investment, each with its own address and full independence.

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Why Sydney Homeowners Choose Resco Group for Extensions

Local extension builders who understand Inner West blocks, council rules, and heritage streetscapes

Seamless Integration

Our extensions blend perfectly with your existing home, matching architectural style and quality

Increased Value

Well-designed extensions significantly increase your property's market value

Expert Planning

We handle all design, permits, and approvals, ensuring compliance with local regulations

Local Expertise

Deep knowledge of Inner West Sydney council rules, Complying Development requirements, and local architectural styles for fast approvals and fewer delays

Our House Extension Process in Sydney

From design consultation to handover, extending Inner West Sydney homes with care and precision

Design Consultation

We visit your Sydney property, assess your needs, and create an extension or granny flat design that integrates seamlessly with your existing home.

Planning & Approvals

Our team manages all permits, approvals, and compliance requirements with local Inner West Sydney regulations.

Construction

Expert builders execute the extension with precision, ensuring minimal disruption to your daily life.

Handover

We ensure every detail is perfect, delivering a seamless extension that feels like it was always part of your home.

Our Latest House Extensions in Sydney

See the quality and craftsmanship we bring to every extension and granny flat across Inner West Sydney

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Bexley NSW 2207

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Inner West Sydney

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Custom home builders, renovation builders, and extension specialists serving Inner West Sydney and selected surrounding areas.

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Our home base. Custom home builds, house renovations, and extensions in Leichhardt, Marrickville, Newtown, Balmain, Annandale, Rozelle, Glebe, Petersham, and the wider Inner West.

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House Extension FAQs: Granny Flats & Second Storey Sydney

Extension costs, granny flat approval, timelines, and second storey builds explained for Sydney homeowners

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House Extensions & Granny Flats in Sydney

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Why Sydney Homeowners Choose Resco Group for Extensions

Seamless Integration

Increased Value

Expert Planning

Local Expertise

Our House Extension Process in Sydney

Design Consultation

Planning & Approvals

Construction

Handover

Our Latest House Extensions in Sydney

75 Bayview Street

326 Catherine Street

Modern Family Extension

Home Builders & Renovators Across Sydney

Inner West Sydney

Extended service areas

What Sydney Homeowners Say About Their Extensions

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Ali Hamka

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House Extension FAQs: Granny Flats & Second Storey Sydney

How much does a house extension cost in Sydney?

What are the best granny flat builders Sydney?

Do I need council approval for a granny flat in Sydney?

How long does a house extension take in Sydney?

What's the difference between a granny flat and dual occupancy home?

Can you build a second storey extension on my existing home?

What makes Resco Group different from other granny flat builders Sydney?

Which Inner West Sydney suburbs do you do house extensions and granny flats in?

House Extensions Sydney
Granny Flats & Second Storeys

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