We design, engineer, and build first floor additions for homes across Sydney. Second storey extensions that double your living space without losing your garden. Structurally engineered — not just stacked on top.
Second storey addition under construction · Sydney
Licensed NSW BuilderSecond Storey SpecialistsStructural Engineering LedCouncil DA & CDC ApprovedExisting Home AssessmentStaircase IntegrationFully Documented & InsuredFree On-Site AssessmentsLicensed NSW BuilderSecond Storey SpecialistsStructural Engineering LedCouncil DA & CDC ApprovedExisting Home AssessmentStaircase IntegrationFully Documented & InsuredFree On-Site Assessments
/ Double the space, keep the land
Your block is too good to give up the backyard.
In Sydney, land is everything. Extending outward eats into your garden and outdoor space. Going up gives you double the floor area while keeping your yard, your setbacks, and your outdoor living. But a first floor addition is the most structurally demanding residential project there is — you're putting an entire new level on an existing house that wasn't designed for it.
METCON builds first floor additions with full structural engineering from the outset. We assess the existing structure, design the load path from the new level through to the ground, and strengthen or modify the existing home where needed.
Whether it's a full second storey on a single-level home or a partial upper-level addition for bedrooms and a bathroom — the engineering comes first, then the architecture wraps around it.
From partial upper-level rooms to full second storey builds, we handle every type of first floor addition.
01
Full Second Storey
A complete upper level matching or exceeding the ground floor area. New bedrooms, bathrooms, and living spaces with a properly integrated staircase.
02
Partial Upper Level
Adding rooms over part of the existing ground floor — typically bedrooms and bathroom above the living areas. Less cost, less disruption, targeted space.
03
Staircase Design
Internal staircase integration is critical. We design the stair location, structural opening, and access flow to work with both existing and new levels.
04
Structural Strengthening
Most single-storey homes need structural modification to support an upper level. We engineer and install new footings, beams, columns, and bracing.
05
Ground Floor Reconfiguration
Adding a first floor often means reworking the ground floor layout. We coordinate both levels into a home that flows properly.
06
Roof & Weatherproofing
New roof framing, roofing, insulation, and weatherproofing for the upper level. Properly tied into the existing structure below.
Every first floor addition follows our structured five-step process. The existing structure drives the engineering — we assess it first, then design around it.
01
Step 01
Existing Structure Assessment
We inspect your home's existing foundations, walls, and framing to understand what it can support. This assessment is the foundation of the entire project.
02
Step 02
Engineering & Design
Structural engineers design the load path for the new level. Architects create the floor plans, elevations, and integration details. Both work together.
03
Step 03
Council Approval
We manage the DA or CDC submission including plans, engineering, shadow diagrams, and any neighbour notifications. Followed through to approval.
04
Step 04
Build
Construction is staged — structural modifications first, then framing, roofing, and fit-out. We protect the existing home throughout and keep you informed.
05
Step 05
Completion & Certification
Final inspections, compliance certificates, and full documentation handover. Your home is now two storeys — properly engineered and certified.
/ What you get
A second storey that belongs — not one that looks added on.
Structural engineering, council approval, construction documentation, and compliance certificates. A first floor addition that adds genuine value.
Going up is the hardest thing you can do to an existing home. We've done it hundreds of times. Structural assessment, engineering, council approval, and construction — all managed by one builder.
Structural Assessment
We assess existing foundations, walls, and framing before designing anything — not after.
Engineer-Led Design
Every first floor addition is structurally engineered for the specific existing home beneath it.
Licensed Builder
Meteora Constructions Pty Ltd — fully licensed in NSW with all required insurances.
Council Managed
DA and CDC approvals managed from plans through to determination. We handle the process.
Existing Home Care
We protect and maintain your existing home throughout the build. Dust, weather, security — all managed.
40+ Years Experience
Hands-on Sydney building experience going back to the 1970s.
/ Where we work
Sydney-wide first floor additions.
We build first floor additions across Sydney — from terraces in Balmain to family homes in Castle Hill and everywhere between.
MosmanManlyCremorneLane CoveChatswoodHornsbyParramattaStrathfieldBurwoodConcordHunters HillDrummoyneFive DockLeichhardtNewtownSurry HillsPaddingtonBondiRandwickCoogeeMaroubraSutherlandHurstvilleKogarahCronullaEngadinePenrithLiverpoolCampbelltownWollongongCentral Coast+ Greater Sydney
/ Sydney coverage
Servicing Sydney metro & surrounding NSW regions
/ Thinking of going up? Let's assess it
Send us photos of your home.
A few exterior photos, the existing floor plan if you have one, and a note on what you're hoping to achieve. We'll tell you whether your home can support a first floor and what the process looks like. No obligation.
