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Specialist builders for home extensions and high-end renovations. Compare local bidding rates from licensed master builders and hire directly.

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Second storey additions full house renovations.

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Extensions & Renovation TRB
VERIFIED New & Add builders

Ground floor and structural home extensions.

VERIFIED New & Add builders

Extensions & Renovation TRB

Service Area & Location 789 Market St, Brisbane, QLD 4000
Second storey additions full house renovations.
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Structural & Additions

Ground Floor Structural Home Extensions

Complete turn-key ground floor additions including concrete slab, structural framing, brick veneer walling, roofing, insulation, and linings.

Extension Area: 30 Sqm
$3,200.00/Sqm +GST $96,000 Total
Structural & Additions

Second Storey Vertical Additions

Upper level timber or steel frame additions including stairwell penetration, structural subfloor strengthening, roofing, and weatherproofing.

Upper Level Area: 50 Sqm
$3,800.00/Sqm +GST $190,000 Total
Full House Renovations

Full House Comprehensive Renovations

Total interior and exterior overhaul including wall reconfiguration, new flooring, electrical rewiring, plumbing, joinery, and custom finishes.

House Floor Area: 100 Sqm
$2,200.00/Sqm +GST $220,000 Total
Structural & Additions

Open Plan Structural Wall Removal & Steel Beam Insertion

Engineered load-bearing wall demolition, temporary propping, structural PFC steel beam installation, and certified compliance certification.

Beam Span Length: 4 Linear Metre
$4,800.00/Linear Metre +GST $19,200 Total
Full House Renovations

Luxury Architectural Kitchen Renovation Package

Custom designer cabinetry, stone benchtop with waterfall edges, premium integrated appliances, splashbacks, plumbing, and electrical fit-out.

Kitchen Quantity: 1 Room
$32,000.00/Room +GST $32,000 Total
Full House Renovations

Designer Bathroom & Ensuite Complete Makeover

Strip out, waterproof membrane compliance, floor-to-ceiling tiling, frameless glass shower screen, custom vanity, and high-end tapware.

Bathroom Quantity: 1 Room
$24,000.00/Room +GST $24,000 Total
Outdoor Living & Decks

Outdoor Alfresco Entertaining Deck & Covered Pergola

Hardwood or composite timber decking on galvanized steel subframe paired with an insulated roof pergola, LED downlights, and privacy screens.

Deck & Patio Area: 25 Sqm
$650.00/Sqm +GST $16,250 Total
Structural & Additions

Attic Conversion & Roof Storage Loft Fit-Out

Roof truss web modification, engineered flooring joist reinforcement, skylight window installation, insulation, plaster lining, and pull-down stair access.

Attic Floor Area: 30 Sqm
$1,400.00/Sqm +GST $42,000 Total
Structural & Additions

Granny Flat / Backyard Studio Detached Build

Self-contained secondary dwelling construction including slab, frame, kitchenette, bathroom, split-system air conditioning, and council CDC approval management.

Studio Floor Area: 60 Sqm
$2,800.00/Sqm +GST $168,000 Total
Structural & Additions

Subfloor Excavation & Underhouse Basement Conversion

Underpinning existing foundation footings, controlled rock and soil excavation, waterproof tanking, drainage sump pump, and habitable room fit-out.

Basement Area: 40 Sqm
$2,900.00/Sqm +GST $116,000 Total
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OUR BEST OFFER

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Balcony Waterproofing
WATERPROOFING #01
ID: #BAL-WTR1
BALCONY REMEDIATION | MEMBRANE & TILING

Complete Balcony Waterproofing Strip-Out

We completely restore your balcony with expert waterproofing and fresh tiles, stopping leaks fast and keeping your outdoor space looking stunning.

$240.00 /m² $204.00 /m²
SAVE 15% +GST
Service Scope: Complete tile & screed removal, waterproof membrane application, flashing details, and full tile reinstatement.
Bathroom Leak Sealing
WET AREA #02
ID: #BATH-INJ2
WET AREA REMEDIATION | NON-DESTRUCTIVE SEALING

Bathroom Membrane Failure Injection

We fix leaking showers instantly without breaking your tiles, using advanced pressure sealing to save you time, mess, and money.

$1,650.00 /Room $1,402.00 /Room
SAVE 15% +GST
Service Spec: Sub-tile moisture extraction, polyurethane resin injection, perimeter silicone replacement, and clear sealing.
SAVE 15% SPECIAL BUNDLE
Structural Epoxy Crack Injection
STRUCTURAL #03
ID: #STR-CRK3
STRUCTURAL REPAIR | EPOXY CRACK INJECTION

Structural Epoxy Crack Injection

Our professional injection seals concrete cracks permanently, restoring ultimate building strength and protecting your property from future water damage.

$195.00 /lm $165.00 /lm
SAVE 15% +GST
Value Advantage: Structural strength restoration, corrosion inhibition, port sealing, and deep-penetrating epoxy bonding.

*This offer is currently available through our email marketing. Promotional rates exclude difficult site access or non-standard materials and are subject to final inspection.

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RECENT JOBS & PROJECTS

2 featured major projects and 5 recent builds with costs, locations, and reviews.

HOME LOVE & LIVING

Thinking of growing your home? Take a look at our recent extension and renovation jobs across NSW! From extra ground floor rooms to full second storey additions, we make home building simple, safe, and stress-free for your family.

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Extensions & Renovations

Recent Jobs Done

Ground Floor Extension

New Rear Living Room & Covered Sun Deck

We built a warm open-plan living extension onto the back of the house with big glass sliding doors and a spacious outdoor patio for family BBQs.

Popular Cost $88,000 Great for growing families! 🏡
Eastwood
Second Storey Addition

Top Floor Parent Retreat & Master Bathroom

Added a full top floor with two sunny bedrooms, a private walk-in wardrobe, and a luxury bathroom without taking away any backyard space.

Popular Cost $195,000 Doubled the home space! ✨
Epping
Structural Wall Removal

Open-Plan Kitchen & Dining Space Makeover

Safely removed heavy load-bearing walls and installed strong hidden steel beams to open up dark separate rooms into one bright, giant family room.

Popular Cost $28,500 So much extra sunlight! ☀️
Parramatta
Full House Renovation

Complete Modern Home Makeover Top to Bottom

Total refresh of an older home including a new kitchen, two new bathrooms, fresh flooring, modern lighting, and interior painting throughout.

Popular Cost $145,000 Feels like a brand new house! 🔑
Ryde
Kitchen Extension

Chef Kitchen Extension with Island Bench

Extended the side of the house by 4 meters to build a massive dream kitchen with a stone island bench, walk-in pantry, and backyard garden views.

Popular Cost $62,000 Perfect for cooking together! 🍳
Baulkham Hills
Backyard Extension

2-Bedroom Modern Granny Flat Addition

Built a separate single-level home extension in the backyard with two bedrooms, full kitchen, and bathroom for grandparents to live close by.

Popular Cost $138,000 Loving space for family! 👵👴
Newcastle
Outdoor Extension

Structural Alfresco Area with Outdoor Kitchen

Built a sturdy roof extension attached to the main house with ceiling fans, downlights, timber decking, and built-in outdoor BBQ counter.

Popular Cost $42,000 Enjoy outdoor living all year! 🌿
Wollongong
Heritage Home Renovation

Classic Cottage Structural Repair & Extension

Restored old floor timbers, repaired structural walls, and added a modern rear dining room while keeping all the charming classic front features intact.

Popular Cost $112,000 Old charm meets modern style! 🏡
Strathfield
Vertical Additions: Second-Storey Brick Wall Full Plan Package
HOME EXTENSIONS #01
ID: #CS-EXT1
HOME EXTENSIONS | VERTICAL ADDITIONS

Vertical Additions: Second-Storey Brick Wall Full Plan Package

We build upwards with absolute mastery and unmatched confidence. Our seasoned team guarantees a flawless second-storey transformation that seamlessly elevates your lifestyle and property value.

Friendly Scope of Work:
  • Planning & Approvals: Full DA/CDC architectural plans, engineering blueprints, and council documentation packages.
  • Structural Framing: Second-storey timber or steel framing, engineered floor joists, and load-bearing brickwork.
  • Weatherproofing: Sarking, roof installation, temporary protective wrapping, and complete weather-seal protection.
  • Site Handover: Comprehensive debris clearance, waste removal, and structural compliance certification ready for interior trades.
From $145,000 STRUCTURAL PKG +GST
Engineering Excellence: Designed and certified by licensed structural engineers to meet strict NSW building code standards.
TURNKEY PKG
Load-Bearing Steel Beams & Full Wet Area Refurbishments
RENOVATION #02
ID: #CS-EXT2
RENOVATION & EXTENSION | STEEL & WET AREAS

Load-Bearing Steel Beams & Full Wet Area Refurbishments

We unlock open-plan living with absolute precision and unshakeable technical confidence. Trust our elite specialists to execute complex structural steel insertions and luxury wet area refurbs to perfection.

Friendly Scope of Work:
  • Steel Beam Insertion: Certified structural universal beams (UB), prop-up support, and load calculations for open-plan living.
  • Wet Area Refurbs: Full bathroom and wet area strip-out, premium waterproof tanking, and modern fixture installation.
  • Wall & Floor Prep: Subfloor reinforcement, framing adjustments, and flawless surface substrate preparation.
  • Engineering Delivery: Final handover inspections, waterproof certificates, and structural compliance sign-off.
From $85,000 Turnkey Package
TURNKEY PKG +GST
Licensed Structural Delivery: Guaranteed compliance with professional engineering standards and complete waterproofing warranties.
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Easy, safe, and honest trade help. No hidden costs. 🌸

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The Remedial Builders P/L

LIC: Builder 283896C • ABN 34 160 847 736

Mobilisation $550.00
01 Demolition Scope & Specialized Site Clearance (Save 15%)
A. Full Structure & Residential Demolition
SAVE 15%

Single Storey House Demolition

Complete structural knockdown & waste removal.

$55.25 /m² (+GST) $65
SAVE 15%

Double Storey Dwelling Demolition

Multi-level knockdown & debris disposal.

$72.25 /m² (+GST) $85
SAVE 15%

Commercial Building Demolition

Heavy industrial & commercial structures.

$93.50 /m² (+GST) $110
SAVE 15%

Townhouse / Duplex Demolition

Multi-dwelling block site clearance.

$63.75 /m² (+GST) $75
02 Internal Strip-Outs & Hazardous Remediation
B. Multi-Selection Strip-Outs & Remediation Items
Demolition & Strip-Out Specification Rate / Cost Select / Qty
Commercial Office / Retail Internal Strip-Out
Complete internal strip-out to bare shell structure. 		$38.25
/m² (+GST)
Residential Kitchen, Bathroom & Internal Wall Strip-Out
Targeted internal demolition for wet areas and partition walls. 		$55.25
/m² (+GST)
Ceiling Grid, Plasterboard & Partition Wall Demolition
Removal of suspended ceilings, linings, and stud walls. 		$29.75
/m² (+GST)
Floor Tile, Screed & Carpet Removal with Surface Grinding
Complete floor finish stripping, adhesive removal and mechanical grinding. 		$32.30
/m² (+GST)
Bonded Asbestos Sheeting Removal & Safe Disposal
Licensed asbestos removal, containment, transport and EPA waste docket. 		$46.75
/m² (+GST)
03 Professional Guarantee & Compliance
Licensed Builder Demolition & Safe Disposal Compliance
SafeWork compliance, EPA waste dockets & $20M Public Liability Insurance.
Included
04 Client & Site Details

Professional Demolition & Site Standards

Licensed builder supervision, certified safe waste removal, and structural clearance management.

1. Structural Demolition Controlled knockdown, multi-level structural dismantling, and total waste clearance.
2. Strip-Outs & Grinding Internal asset strip-outs, partition wall removal, and surface grinding.
3. Hazardous Compliance Licensed asbestos removal, EPA waste tracking dockets, and SafeWork protocols.
Notice & Safety

You contract directly with the trade business (Build-Surety is not a party). Plus, never share ID or payments online—we will never ask.

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Frequently asked questions

Clear, honest answers for builders, strata, and property owners.

EXTENSION & RENOVATION SPECIFICATION

Extensions, Renovations & Approvals (10 Key Answers)

Everything you need to know about DA, CDC, structural building approvals, and home extension delivery before signing a contract.

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01 APPROVAL PATHWAYS

What is the difference between Development Application (DA) and Complying Development Certificate (CDC)?

CDC: Fast-tracked approval through a private certifier in 2–4 weeks if your plan meets strict council codes.

DA: Required for custom designs or heritage zones, taking 8–16 weeks via local council.

02 CONSTRUCTION CERTIFICATE

When do I need a Construction Certificate (CC)?

After your DA is approved by council, a CC is required before any building work starts to ensure structural engineering plans meet the National Construction Code.

03 DESIGN & DRAFTING

Do you handle structural architectural plans and engineering details?

Yes. We coordinate architectural drafts, structural engineering computations, and soil testing required for full certifier sign-off.

04 EXTENSIONS & TIMELINES

How long does a typical ground-floor or second-storey extension take to build?

Ground-floor extensions take 8–12 weeks; major second-storey additions typically take 16–24 weeks from site setup to lock-up.

05 OCCUPANCY DURING WORK

Can our family stay living in the home during the renovation?

For minor extensions, yes. For major second-storey additions or open-roof work, we seal off work zones safely or advise temporary relocation for comfort.

06 LOAD-BEARING WALLS

How do you safely remove internal walls for open-plan living?

We install certified structural steel beams (RSJs) calculated by structural engineers to support upper floor and roof loads safely.

07 NEIGHBOUR NOTIFICATION

Will council notify my neighbours about our extension plans?

DA pathways require a formal council neighbour notification period. CDC approvals do not require council public review if all setback rules are met.

08 VARIATIONS & BUDGET

How do you prevent budget overruns during renovation work?

We provide fixed-price contracts based on complete engineering plans. Any owner-requested changes are priced and written as approved variations upfront.

09 OCCUPATION CERTIFICATE

What is an Occupation Certificate (OC) and how do I get it?

The OC is the final legal approval confirming the build is safe and compliant with plans, issued by the certifier upon final inspection.

10 NEXT STEP

Ready to discuss your renovation plans?

Contact Us Now for a friendly site review, plan evaluation, and fixed-price build estimate.

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Epoxy wash & paint TRB

epoxy coating, professional wash, and paint services.
📍 QLD Toowoomba
📞 0433 379 576 Andy

Handyman TRB

Complete Property Repairs and Upkeep
📍 NSW Inner West
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Tree Removals

Hazardous Tree Removal Operations
📍 NSW Inner West
📞 0433 379 576

Landscaping & Gardener TRB

Structural retaining walls and hardscaping.
📍 QLD Brisbane
📞 John Doe, +61 2 1234 5678

Plumbing & Gas Fitting

Residential Plumbing and Maintenance Solutions
📍 NSW Inner West
📞 0433 379 576

Flooring Installation

Laminate, Hybrid SPC & Vinyl Plank Flooring
📍 NSW Inner West
📞 0433 379 576

Sam's Royal tile

A. Certified Subfloor and Wall Waterproofing
📍 NSW Inner West
📞 0433 379 576
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Extensions & Renovation TRB

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Brisbane, Australia
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