When a single-storey extension may make sense
A single-storey extension can work well when the plot has enough usable external area and the priority is improving ground-floor living.
Common uses include:
- larger kitchen/dining areas;
- family rooms;
- guest suites;
- home offices;
- utility spaces;
- improved indoor-outdoor connection.
It can also allow the existing ground-floor plan to be reorganised around a new open living area.
Advantages of extending on one level
Potential benefits include:
- simpler circulation;
- direct connection to garden/pool areas;
- no need to introduce a new staircase to reach the added space;
- easier accessibility for some occupants;
- strong potential to transform the relationship between old and new living areas.
However, the extension uses more of the site at ground level and may reduce garden or external space.
When a two-storey extension may be more appropriate
A two-storey extension can create more floor area without using as much of the plot footprint.
It may suit projects that need:
- additional bedrooms;
- bedroom plus living accommodation;
- larger family expansion;
- better separation between private and shared areas;
- more floor area on constrained plots.
The design needs to connect structurally and visually with the existing building on more than one level.
Two-storey work introduces additional structural questions
Adding upper-level space can affect foundations, load paths, existing walls and roof structures.
A structural engineer needs to determine how the new work should connect to the existing building and whether strengthening is required.
The same principle applies to a single-storey extension where large openings are created in existing walls: “single storey” does not automatically mean structurally simple.
Stair and circulation planning matters
If the project adds or changes an upper level, the location of the staircase can significantly affect the existing plan.
A poorly positioned stair can consume valuable space or create awkward circulation. It should be considered at concept stage rather than inserted after the upper-floor layout is already designed.
Compare the effect on outdoor space
A wider ground-floor extension may reduce garden, parking, side access or pool space.
A taller extension may preserve more ground area but have a greater visual relationship with neighbours and surrounding buildings.
The site should be evaluated as a whole.
Planning conditions can influence the answer
Coverage, density, height, setbacks and other planning conditions can affect what is possible on a particular property.
Publication note: specific Cyprus/Paphos planning rules must be checked against the current planning context for the actual site. Do not publish generic limits as if they apply to every property.
Consider construction disruption
Both types of extension interact with the existing home.
The programme may involve:
- temporary weather protection;
- structural openings;
- service changes;
- roof alterations;
- internal refurbishment where old and new spaces meet.
A two-storey extension can involve more interfaces with the existing building, but the actual disruption depends on the design.
Compare whole-project value, not only build cost
The best extension is the one that creates the right long-term layout without unnecessarily compromising the site or existing home.
A cheaper option can be poor value if it creates awkward rooms, poor circulation or reduces outdoor space that matters to the occupants.
Start with a feasibility comparison
Before committing to one approach, compare:
- required additional rooms;
- plot space;
- planning constraints;
- structural implications;
- staircase/circulation needs;
- effect on outdoor areas;
- visual integration;
- programme and budget.
Rodi's Home Extensions service in Paphos is the commercial destination for discussing extension options, supported by the Home Extension Planning guide.
Key takeaway
Single-storey extensions are often strong for expanding ground-floor living; two-storey extensions can create more floor area on a smaller footprint. The correct choice depends on the existing house and site, not the number of storeys alone.