By Jesse Skulmoski · Operandi Design Build
An extension often begins with a clear wish: a kitchen where two people can cook comfortably, a living room that welcomes the family, or a primary bedroom with space to dress and an ensuite that works well.
The extra space should improve daily life throughout the house. Before deciding how far to extend, look at how the existing rooms work, what you would like to change and how the new space will connect with the home you already enjoy.
Could the existing layout work better?
Start with the things that feel awkward. Is a corridor taking up useful space? Does the kitchen lack storage, or is its layout making it difficult to cook? Is a spare room rarely used while everyone gathers in a cramped living area?
Compare rearranging rooms, adding space and a combination of both. A modest extension may create the room you need when it is paired with a better layout. In other homes, a more substantial addition may be appropriate. Test the options against your priorities, the property and the work each approach involves.
A more comfortable primary bedroom and ensuite
Plan the bedroom around the furniture and routines it needs to accommodate. Consider where the bed will sit, how you move around it, where clothes are stored and whether wardrobe doors and bedroom doors work comfortably together.
An ensuite should suit the way you get ready, bathe and unwind. Think about useful counter space, lighting, ventilation, storage and privacy from the bedroom. If two people use the room, discuss which activities overlap and where a little more separation would help.
Consider whether this part of the home could work on a convenient floor as needs change. Our Aging in Place guide explores bathroom layouts, access and other adaptations in more detail.
More room for the kitchen
Begin with how you cook. Where do groceries arrive? Can someone reach the fridge while another person prepares a meal? Would you prefer seating at the counter, a dining table nearby, or both?
Draw in appliances, cabinets, seating and the routes between rooms before deciding the new footprint.
Check the work behind the layout too. Moving a sink, changing cooking equipment or opening an exterior wall can involve plumbing, electrical, ventilation and structural changes. Understand those requirements while the plan is still flexible.
Living spaces that feel connected
Think about how the room will be used across the day: reading in daylight, watching a film, hosting friends or making space for children to play. Furniture layouts, useful wall space and storage can help establish the size and shape of the extension.
Look at its relationship with the rest of the house and garden. Plan routes through the room so people can move comfortably around seating. Check how daylight will reach both the extension and the existing rooms behind it.
Windows and glazed doors influence views, privacy and summer comfort as well as appearance. Consider orientation, shading and practical garden access alongside the amount of glass.
Understand what the house and property can support
Confirm where added space could go before fixing the design. Zoning, property boundaries, setbacks, permitted building coverage and trees can all affect the footprint. Check title restrictions, drainage, service routes and archaeological considerations, along with any heritage requirements, early.
Extending outwards and adding an upper floor involve different work. Building up can change demands on the existing structure and foundations, as well as the roof and stairs. Have the appropriate professionals assess what the house can support.
Connect old and new properly
A large opening between the original house and extension may need structural support. Floor levels, roof shapes and the route of services also need coordination. These decisions influence how naturally the rooms connect and what construction will involve.
Plan the weather protection, insulation and window details where the new work meets the existing house. Consider rainwater from new roof areas and how changes to paving or ground levels affect drainage.
Heating, cooling where needed and ventilation should be reviewed for the rooms being changed or added. Confirm the energy requirements that apply to your particular project with the design team and municipality.
Understand the whole budget and the work around it
Ask where the work will start and finish. Will new flooring continue into existing rooms? What walls or ceilings will need repair after structural work? Will the project include new cabinetry, lighting or heating beyond the extension itself?
The estimate should identify design and engineering, approvals, preparation and demolition, foundations, construction, services, finishes and exterior restoration. Discuss allowances, contractor charges, taxes and a contingency for unresolved conditions alongside the building work.
For older homes, include appropriate hazardous-material assessment and any required removal before existing materials are disturbed.
Plan how you will live through construction. Agree how access, dust, noise and belongings will be managed, and when the kitchen or bathrooms may be unavailable. If roof or exterior walls will be opened, temporary weather protection needs to be planned. Establish whether temporary accommodation will be needed.
Confirm approvals and the construction sequence
Check the property and proposed work with the relevant municipality. The approval path can include planning or heritage requirements as well as building and trade permits.
Allow for the inspections required by the permit, including checks before work is concealed by later stages.
For a substantial extension or reconstruction, confirm whether new-home registration, licensing and warranty requirements apply. The requirements can differ from those for an ordinary renovation.
How Operandi can help
We begin with a conversation and a site visit to understand the house and what you want to make possible. Bring existing plans if you have them, along with the rooms you would like to improve and the features you want to keep.
Where further investigation is needed, we agree on a paid feasibility stage, its fee and what you will receive. We can compare layout and extension options, coordinate specialist input and develop a preliminary budget. As the plan develops, we work with the appropriate design professionals and trades on drawings, selections, approvals, costs and construction arrangements.
Under a separate construction agreement, Jesse leads site coordination, communication and agreed changes through to the final walk-through and handover. Book a site visit to talk through how your home could work better for you.