Building a second storey vs single storey home

Considerations to help you decide on a single or double storey home

Building your own home is an exciting and rewarding journey. Whether you want to entertain guests, start a family or establish a personal retreat, the pros and cons of a second storey vs single storey home need to be carefully considered. Land restrictions, privacy needs and future resale potential can all affect your decision. A thoughtfully planned home design will meet your needs and deliver a personalised and functional space.

What’s the difference between a single storey and second storey home?

The structural difference between a single and second storey home is straightforward, but the impact on your budget and daily life can be significantly different. A single storey design is generally more economical with a simple layout flowing from inside to the outside living areas. In contrast, whilst not always the case, a two-level house generally costs more but can conserve existing outdoor areas and maximise floor space on a smaller block.

Single storey home design and layout

Single storey houses have one level, with average floor plans ranging from 130 to 260 square metres. This suits people who need a customised single storey design that prioritises convenience and safety, such as families with young children, those with limited mobility and elderly people who wish to remain in their homes.

A contemporary wooden home renovation in Caulfield South, Melbourne, was designed with premium wood by Spacemaker.

Second storey home design

A second storey home has two levels, usually connected by a staircase, although a house with a basement is not considered two storey. Generally built on smaller blocks measuring 220 to 280 square metres, double-level homes have an average range of 200 to 260 square metres of total build space. Homes on larger blocks with 350 to 400 square metres or more of build space can average between 340 and 440 square metres of floor space.

What should I consider when choosing between a single and double storey home?

Whether a one or two storey home is best for you depends on several factors including the number of people in the household, lifestyle and safety considerations, local regulations and budget. These considerations can help you decide:

Location and zoning laws

Residential developments are subject to strict structural and environmental zoning regulations. Some restrictions may limit building height to preserve neighbourhood character or prevent overshadowing other houses. Many existing inner Melbourne heritage homes have rules governing how they should be protected and renovated. While most of Victoria, including the Melbourne metro area, isn’t prone to flooding, it’s important to understand local restrictions before finalising your development plan. 

Age of family and accessibility

Size, age and the mobility needs of the household can affect your choice. Families with young children or seniors may prefer a single level house to reduce the risk of accidents on a staircase and ensure they can easily move throughout the dwelling. However, if you choose a split level home design, installing childproof gates or a lift can minimise these hazards.

Balancing indoor and outdoor space

Do you enjoy hosting barbecues or want your kids to have room to play outdoors? Building a single storey home can leave less room for outdoor features—like a pool, play area or garden—and limit your ability to add home extensions in the future. If you need more room later on, building up with one of our custom second storey home extensions can help conserve valuable outdoor space while providing extra room indoors. 

Construction costs

Building two storey homes requires additional materials like scaffolding, staircases and foundational support, often making them more expensive to construct. However, the extra room indoors and available yard space can increase property value significantly. If you opt for a ground floor home that you want to develop in the future, a single storey extension in Melbourne can be more affordable than adding a second storey to a house. This is an ideal solution for families with ample backyard space.

Appealing to a broader buyer base

Single storey homes generally have broader market appeal, attracting purchasers such as elderly people, those with mobility concerns, single households and families who enjoy indoor-outdoor living. In contrast, homes with two levels appeal to those who prioritise more room and attractive views over outdoor spaces. A single storey home might sell more quickly, while a double storey home could yield a higher return. 

Maximising property views

Homes in some of Melbourne’s inner-city suburbs overlook scenic bayfront, coastal and city skyline panoramas. Double storey homes can take advantage of surrounding views by placing common living areas, entertainment spaces or bedrooms on the upper floor.

Designing for privacy

Space considerations are important for households with teenagers, adults who need privacy and individuals working from home. Double storey homes offer more flexibility for separating bedrooms from other living areas by placing them on different floors. In single storey homes, privacy can be achieved by separating bedrooms from shared spaces using an L-shaped layout or building an enclosed courtyard. Discover how to enhance your living space to meet your family’s privacy needs with the best custom home extensions and renovations.   

Heating costs and energy efficiency

Heat naturally rises, so maintaining a consistent temperature throughout a two storey home can be more difficult. The additional space, extra insulation required and greater use of temperature control appliances can increase costs. To reduce overall energy consumption, speak with your builder about integrating smart appliances and applying passive design principles. These maximise natural light and warmth using room orientation and placement in the floor plan. A good builder can also help you to understand and apply the new seven-star home energy efficiency standards in Melbourne.

Open plan design preference

A one storey house is ideal for homeowners looking for open plan living that seamlessly connects spaces inside and outside the home. There are fewer structural constraints, such as additional support for upper levels, and the open design optimises natural lighting and airflow. An open plan layout can make a smaller home feel more spacious because you can move freely between living areas. 

Complex versus simple layout

A single storey home usually has a more straightforward and functional layout with no stairs, whereas double level homes require more complex planning to balance design with structural integrity. If you decide to develop your property in the future, single storey home extensions can add space for growing families and extra room for storage and entertainment.  

Style and street appeal

Double storey homes can appear more impressive and striking, while a single storey home often has a more subtle charm. Whether you choose a single or double storey home, the street appeal and resale potential can be maximised and strict building codes met by ensuring it complements the surrounding landscape and residences.

Consider second storey vs single storey design options and build your dream home

Whether building a double or single storey house, factors like land regulations, scenic view potential and lifestyle needs can impact your decisions. Spacemaker Home Extensions specialises in customising new home designs to your vision and practical needs. With over 50 years of experience, our multi-award-winning team of expert home designers, builders and project managers is well known for creating bespoke, quality homes that our clients love. Call 03 8873 7800 or send us an online enquiry to discuss your next project.

Download Our Portfolio