Second storey addition interior in Ashfield by Strava Group

Second Storey Addition Packages · Ashfield

Add bedrooms, bathrooms & living space, without moving.

Fixed-price second storey additions for Ashfield homeowners, from $269,000. Built to our Above Standard Carpentry Specification, with a solid Hebel PowerFloor included as standard on early projects.

Licensed Sydney builder Fixed-price scope Clear inclusions & exclusions Inner West local
EOFY offer, limited time

Hebel PowerFloor included free on early Ashfield packages booked June to December 2026. A solid, quieter floor, normally an upgrade.

Space without moving

More room, without leaving the Inner West.

You love your Ashfield street, your neighbours, the school run. What you don’t love is running out of space. Moving means stamp duty, agent fees and starting over somewhere that may never feel like home.

A second storey addition (or second storey extension) lets you stay exactly where you are and build the space you need: extra bedrooms, a second bathroom, a private master retreat or an upstairs living zone, without giving up a metre of backyard. You build up, not out.

Strava Group are your local second storey addition specialists in Ashfield and across the Inner West.

Same land. Same suburb. Same address. A whole new upstairs.

Choose your package

Three fixed-price starting points.

All prices are “from”, GST inclusive, and apply to the new upper-floor works only. Every package includes Hebel PowerFloor for the current EOFY offer.

Essential
Approx. 40–45m²
From$269,000
1 Bed · 1 Bath · Retreat
  • New upper level with 1 bedroom
  • 1 bathroom or ensuite
  • Retreat or study zone
  • Internal staircase allowance
  • Hebel PowerFloor included
Best for: smaller additions, a parents’ or teenager’s space.
Get My Fixed Price
Family
Approx. 55–65m²
From$299,000
2–3 Beds · 1 Bath
  • 2–3 bedrooms upstairs
  • 1 family bathroom
  • Internal staircase
  • Moves bedrooms up, opens your ground floor
  • Hebel PowerFloor included
Best for: families wanting bedrooms moved upstairs.
Get My Fixed Price
Complete
Approx. 70m²+
From$315,000
3 Beds · 1 Bath · Living
  • 3 bedrooms upstairs
  • 1 bathroom
  • Upstairs retreat / living area
  • Internal staircase
  • Hebel PowerFloor included
Best for: a major, whole-family home transformation.
Get My Fixed Price

Every plan is custom-drawn to suit your Ashfield home. Package price covers the new upper-floor works; design, engineering and council approvals are quoted separately as preliminaries.

The Strava difference

A solid, quieter upstairs.

Most second storey additions sit on 19mm lightweight particleboard. While it does the job, it can feel hollow and bouncy underfoot. As a result, footsteps carry straight down to the rooms below.

For early Strava Group projects in Ashfield we include Hebel PowerFloor as standard. It’s a 75mm autoclaved aerated concrete (AAC) panel, almost four times thicker than standard flooring. Laid over your joists, it creates a solid, concrete-style floor.

  • 75mmAlmost 4× thicker than standard 19mm particleboard, so it feels solid underfoot with no bounce or flex.
  • 0Squeak-free. The thick AAC panel doesn’t creak the way timber-based flooring can over time.
  • Helps reduce noise transfer between levels for a quieter upstairs, especially with the right ceiling system.
  • Non-combustible AAC, with thermal insulation and moisture resistance built in.
Your upper floor, layer by layerSection
Floor finish (timber, tile or carpet)
Hebel PowerFloor75mm solid AAC panel, included this EOFY75mm
Engineered floor joists
Acoustic / thermal insulation
Plasterboard ceiling below
Diagram is illustrative. Acoustic ratings (e.g. Rw+Ctr 50) apply to the complete floor-ceiling system, not the panel alone, and depend on the ceiling, insulation and joist design. Hebel PowerFloor is included where suitable, subject to engineering, access and final scope.

Clear scope

What’s included, and what isn’t.

Being upfront about both is exactly how we keep your fixed price genuinely fixed.

Included as standard

In the new upper-floor package area.
  • Hebel PowerFloor (75mm solid AAC panel), where suitable
  • Structural timber framing to engineer’s details
  • Wall framing & roof framing
  • Roofing
  • External cladding
  • Aluminium windows
  • Insulation
  • Plasterboard & setting
  • Internal doors, hardware & hinges
  • Skirting & architraves
  • Standard staircase allowance
  • Electrical allowance, LED downlights & smoke alarms
  • Bathroom allowance (where part of the package)
  • Painting to new upper-floor areas
  • Builder supervision & construction management

Quoted separately if needed

Every existing Ashfield home is different, so these are assessed per property.
  • Structural steel beams (unless listed)
  • Footing, pier or foundation upgrades
  • Additional bracing to the existing house
  • Ground-floor renovations or layout changes
  • New downstairs kitchens, bathrooms or laundries
  • Existing termite, rot, water or defect repairs
  • Electrical mains, switchboard or stormwater upgrades
  • Air-conditioning upgrades
  • Design, engineering, BASIX & council/DA-CDC (preliminaries)
  • Rock excavation or unforeseen ground conditions
  • Premium window, cladding or staircase upgrades
  • Any works outside the new upper-floor package area

Want the full detail?

The complete inclusions and exclusions, right down to hardware, fixtures, fittings, finishes and specifications, are provided in detail when you enquire, and confirmed in your contract.

Contact us for the full inclusions & exclusions
How the fixed price works

Our fixed-price packages apply to the standard new upper-floor works listed above. If your property needs structural steel, footing upgrades, extra bracing, service upgrades, defect repairs or downstairs renovation works, those items are assessed and quoted separately, clearly, before you commit.

Plan · Manage · Build

Your Ashfield second storey, step by step.

Our proven building process is designed to customise your second storey additions Ashfield project, avoid cost traps and deliver your vision with minimum disruption.

01

Your Initial Assessment

First, we review your enquiry, site, timeframe and budget. Then we contact you within 24 to 48 business hours to arrange a consultation.

02

Consultation & Build Cost Estimate

An experienced builder discusses your project and site, then prepares a detailed build cost estimate.

03

Preliminary Agreement

This formalises your engagement, secures your spot in our schedule and starts coordination with consultants and authorities.

04

Plans & Design

Next, we coordinate design and documentation. As a result, you get plans that suit your brief, site and budget, with optional 3D modelling.

05

Submission to Council

After that, we prepare and lodge your DA and CC, or a CDC. Approval typically takes around 4 to 8 weeks.

06

Final Cost & Contract

Once approved, we confirm the final build cost and issue your HIA Fixed Price Building Contract. Importantly, you review it in full before signing.

07

Pre-Start Selections

Together, we finalise your fixtures, fittings and finishes with suppliers, so everything is confirmed before work begins.

08

Start of Construction

Your project manager meets you on site to confirm documentation, expectations and communication before works commence.

09

Construction

Your project manager oversees the build, coordinates trades and manages quality, keeping disruption to a minimum.

10

Practical Completion

A final inspection, then warranties and compliance documents are provided. We stay available after handover.

Why Strava Group

The leading choice for second storey additions in Ashfield.

A stronger standard inclusion

Hebel PowerFloor comes standard on early packages, giving a solid, quieter upstairs that standard lightweight flooring can’t match.

Builder-led, structure first

Framed and supported to our internal Above Standard Carpentry Specification, so the new level feels solid, aligned and original.

Clear scope & fixed pricing

Transparent inclusions and exclusions from day one, so you know exactly what your second storey additions Ashfield project covers before you commit.

Also exploring other options? Strava Group also builds home renovations, home extensions and custom homes across Sydney. See our recent work in the gallery.

Get in touch

Talk to a builder about your Ashfield home.

Tell us about your home and what you’d like upstairs. We build second storey additions Ashfield homeowners can rely on, and we’ll let you know whether your property suits a second storey and which package fits. No cost, no obligation.

Good to know

Frequently asked questions.

Do I need council approval for a second storey addition in Ashfield?
Most Ashfield second storey additions fall under Inner West Council. Depending on your site, the project may proceed via a Complying Development Certificate (CDC) or a full Development Application (DA). Because parts of Ashfield sit within heritage conservation areas, some homes need the DA pathway. We assess which applies and manage the approvals for you.
Can you add a second storey to a Federation or character home in Ashfield?
Yes. Many Ashfield homes are Federation, Victorian or California Bungalow. We design the new upper level to tie into the existing roofline and detailing so it looks original rather than added on, and flag any heritage or conservation-area considerations early.
How much does a second storey addition cost in Ashfield?
Our fixed-price packages start from $269,000 (Essential), $299,000 (Family) and $315,000 (Complete), covering the new upper-floor works including Hebel PowerFloor for the current offer. Design, engineering and council approvals are quoted separately as preliminaries.
What is Hebel PowerFloor and why is it included?
Hebel PowerFloor is a 75mm solid autoclaved aerated concrete floor panel, almost four times thicker than standard particleboard. It gives the upstairs a solid, concrete-style feel underfoot, helps reduce noise transfer between levels, and is non-combustible. We include it as standard on early Ashfield projects because it’s a genuinely better floor.
Will I have to move out during construction?
Often you can stay, depending on the scope and whether ground-floor works are involved. During the early structural stage there may be a short period where it’s safer to vacate. We set out timing and expectations before we start.
How long does a second storey addition take?
As a general guide, construction runs around 12–24 weeks depending on size and complexity, with design and approvals beforehand. We give you a project-specific timeframe once we’ve assessed your Ashfield home.
Does a second storey addition add value to an Ashfield home?
Adding bedrooms, bathrooms and living space in a well-connected Inner West suburb like Ashfield typically adds significant value. You also keep your land and location. And it’s usually more cost-effective than buying a larger home once you factor in stamp duty and agent fees.
What’s not included in the package price?
The package covers the standard new upper-floor works. Items like structural steel, footing upgrades, downstairs renovations, existing defect repairs, service upgrades and the design/engineering/approval preliminaries are assessed and quoted separately, so your fixed price stays genuinely fixed.
How do I get started?
Request a consultation or call us on 0450 605 080. We’ll tell you whether your Ashfield home suits a second storey, recommend the right package, and outline clear next steps, with no obligation.

Get your free quote today.

Ready to build up in Ashfield?

Contact Strava Group for a free consultation and a quote for your second storey additions Ashfield, with Hebel PowerFloor included this EOFY and a fixed-price scope you can rely on. Building up is one of the most cost-effective ways to add space and value under current NSW housing and construction settings.