We design second storey additions across Tasmania that give you the room you need by building up, then guide you through approvals to build ready plans without the stress.
You love your home and your location, but the family has outgrown the space and there is no room to extend out. Building up feels like the answer, yet it raises hard questions about structure, cost and whether the existing home can even carry it. Most people stall here, unsure if it is possible or affordable.
A first floor addition lets you double your living space without giving up the backyard or moving suburbs. We design the new upper level to work with your existing home and how your family lives. You see the design take shape and refine it with us until it feels right.
We had no idea where to start with our new home and Strait Design made the whole thing feel simple. They designed to our budget from day one and kept us informed the whole way through. Could not fault them.
After a bad experience elsewhere we were nervous, but this team told us the truth about timelines and cost upfront. No surprises and no excuses. Our plans were build ready exactly when they said they would be.
The approvals process terrified us but Strait Design handled all the council side so we did not have to. Everything was explained in plain English and we always knew what was happening next. Brilliant service.
We wanted a double storey family home and were worried about blowing the budget. They shaped the design around what we could actually spend and it still turned out beautiful. Would recommend to anyone building.
As a small developer I needed speed through approvals and accurate early costing. Strait Design delivered both. The documentation was clear enough for builders to price it properly the first time around.
What stood out was the communication. We never had to chase for updates because they always let us know where things sat. Dealing with one team from start to finish made the whole process so much easier.
Over 35 years of experience really shows. They picked up issues early that we never would have and saved us money down the track. It genuinely felt like they had our best interests at heart the entire time.
We are first home builders and had a hundred questions. The team was patient, down to earth and never once made us feel silly for asking. Our build ready plans came through exactly as promised. Thank you.
From the first call to the finished plans the experience was exactly what they said it would be. Trade qualified people who actually know planning and building inside out. Honestly worth every single cent.
Adding a second storey depends on what your existing home and its footings can carry, and we assess that early rather than after you have committed. We prepare the documentation and manage the planning and building approval process for you. You are kept informed at every stage, so you always know where things sit and what happens next.
Your design is reviewed by people who build homes for a living. Get practical input on structure, materials, thermal performance and cost before decisions are locked in.
Stage one finishes with a Project Budget Alignment Estimate based on real project data and current construction rates, so you can check the design against your budget before it goes to council.
Your design fees, consultant allowances and council costs are set out upfront. We explain provisional costs and discuss any additional requirements with you before proceeding.
We guide your selections and document them in your construction drawings, giving builders a clear basis to price the fixtures, fittings and finishes you want.
We coordinate surveyors, engineers, energy assessors, your building surveyor, council and TasWater where required, keeping your pre-construction work moving through one team.
Regular, clear updates explain where your project is at, what comes next and anything we need from you, so you can make decisions with confidence.
Your upper floor extension is documented clearly enough for builders to price the work accurately and on the same basis. That means quotes you can genuinely compare, rather than figures that leave you guessing. We help you engage the right builder, so the work starts knowing exactly where you stand.
We talk through your budget before any design work begins, so you know what your second storey addition will cost and what you are getting. Construction estimates are prepared alongside your approvals. Our timeline and cost guarantees (terms and conditions apply) mean you can plan your life around the work with certainty.
Timing depends on the size of the addition, your existing home and what council requires. We give you a clear timeline at the start, before any work begins. Our process is built to keep your second storey addition moving through design, documentation and approvals without long stalls. We back that timeline with a guarantee, and terms and conditions apply.
That is the first thing we check, because a first floor addition relies on what the existing structure and footings can carry. We assess it early and tell you honestly whether it stacks up before you spend real money. If there are constraints, you will hear about them upfront rather than partway through. That way you make the decision to add a second storey with your eyes open.
Bring your budget, a sense of the space you need and any details you have about the existing home. Photos of the house and examples of upper floor extensions you like are helpful too. You do not need everything worked out before you get in touch. Working through the details with you is part of what we do.
Changes are a normal part of designing a second storey addition, and we refine the design with you until it feels right. The best time to make changes is during the design stage, before documentation and approvals begin. If you want to change something later, we will tell you how it affects your timeline and cost before anything happens. You stay in control of every decision.
That depends on the scope of the build, and it is something we help you plan for early so there are no surprises. Some households stay put through a first floor addition while others prefer to move out for part of it. We will be honest about what to expect so you can arrange your living situation in advance. The goal is a process you can plan your life around.
Yes, we help you engage the right builder once your plans are build ready. Your documentation is prepared so builders can give you accurate, comparable pricing on your second storey addition. We can help you work through the quotes so you understand how they compare. You are not left on your own at the moment it matters most.
We had no idea where to start with our new home and Strait Design made the whole thing feel simple. They designed to our budget from day one and kept us informed the whole way through. Could not fault them.
After a bad experience elsewhere we were nervous, but this team told us the truth about timelines and cost upfront. No surprises and no excuses. Our plans were build ready exactly when they said they would be.
The approvals process terrified us but Strait Design handled all the council side so we did not have to. Everything was explained in plain English and we always knew what was happening next. Brilliant service.
We wanted a double storey family home and were worried about blowing the budget. They shaped the design around what we could actually spend and it still turned out beautiful. Would recommend to anyone building.
As a small developer I needed speed through approvals and accurate early costing. Strait Design delivered both. The documentation was clear enough for builders to price it properly the first time around.
What stood out was the communication. We never had to chase for updates because they always let us know where things sat. Dealing with one team from start to finish made the whole process so much easier.
Over 35 years of experience really shows. They picked up issues early that we never would have and saved us money down the track. It genuinely felt like they had our best interests at heart the entire time.
We are first home builders and had a hundred questions. The team was patient, down to earth and never once made us feel silly for asking. Our build ready plans came through exactly as promised. Thank you.
From the first call to the finished plans the experience was exactly what they said it would be. Trade qualified people who actually know planning and building inside out. Honestly worth every single cent.