A 300 m² plot is one of the most common residential plot sizes in new subdivisions in Riyadh and other Saudi cities. The challenge is that the buildable area after setbacks is far less than 300 m², so every metre needs planning. The difference between a comfortable villa and one cluttered with corridors and dead corners comes from the design, not the area. This guide offers practical ideas for designing a 300 m² villa: how to calculate the real area, the layout of both floors and the annex, the principles that make a small space feel larger, and what changes on 400 and 600 m² plots.
Start With the Real Buildable Area
Setbacks, building ratio and the number of floors are set by the building regulations approved for the plot's location, and they vary between districts. So the first step is for the designer to define the building's actual footprint before drawing any room. Read: Setbacks and building ratios in Riyadh.
Factors that affect the layout include:
- Number of street frontages: a corner plot with two frontages gives more flexibility to separate the guest entrance from the family entrance.
- Orientation: the north facade is best for large openings; south and west facades need thermal treatment.
- Street width: affects the position of the entrance and parking.
- Space needed for parking within the property line.
Ground Floor: Reception and Services
- A men's majlis near the entrance with a guest toilet, ideally with its own entrance.
- A women's majlis or guest lounge visually separated from the men's route.
- A family living room at the centre of the floor, connected to the kitchen.
- A kitchen with a service door to the outside near the parking.
- A ground-floor bedroom for elderly family members if possible, a feature many overlook.
First Floor: Family Privacy
- A master bedroom with bathroom and dressing room.
- Children's bedrooms with shared or private bathrooms depending on the area.
- A small upper lounge linking the rooms.
- A laundry room near the bedrooms if space allows.
Indicative Space Allocation
The table below is an indicative allocation for a two-floor 300 m² villa; actual figures are set after studying the requirements:
| Floor | Spaces | Note |
|---|---|---|
| Ground | Men's majlis, women's majlis or guest lounge, family living, kitchen, guest toilet, ground-floor bedroom (optional) | Priority on separating guests from family |
| First | Master suite, 2–3 children's rooms, upper lounge, bathrooms | Minimise corridors as far as possible |
| Annex | Maid's room, laundry, storage | Within the annex requirements |
Rooftop or Ground Annex
A maid's room, laundry or multi-purpose room, within what the annex requirements allow for the site. Read: Designing a two-floor villa with an annex and Adding an annex or rooftop room.
Principles That Make a Small Space Feel Larger
- Minimise corridors: every metre of corridor is a metre lost from the rooms.
- A centrally placed staircase serving both floors without cutting up the spaces.
- Well-planned openings for natural light and ventilation while keeping privacy.
- Built-in furniture and wall cabinets.
- Suitable ceiling heights and light colours in small spaces.
- An internal courtyard or light well bringing daylight into the middle of the building.
What About 400 and 600 m²?
| Area | What it usually allows |
|---|---|
| 300 m² | A compact layout needing high precision, with a small annex |
| 400 m² | Clearer separation between the men's majlis and the family, and a separate dining room |
| 600 m² | A larger garden, a pool, a guest suite, or a separate outdoor annex |
In every case the requirements are what govern. For general design principles read: The villa design guide for Saudi Arabia.
Common Mistakes in Small-Plot Villas
- Copying a larger villa's plan and shrinking it.
- A staircase in a corner that creates long corridors.
- Neglecting the position of the laundry and storage.
- Large openings facing the neighbour that compromise privacy.
- Not planning for a future lift.
More in Villa design mistakes, and before construction, 3D design helps you see the spaces.
Frequently Asked Questions
Can I build 3 floors on a 300 m² plot?
It depends on the building regulations approved for the plot's location.
How many bedrooms fit in a 300 m² villa?
It depends on the buildable area and the number of floors allowed; the designer determines it after studying the requirements.
Is an open or closed kitchen better?
A closed kitchen better suits everyday cooking in Saudi homes, with the option of an open preparation kitchen facing the living room. Read: Kitchen design layouts.
Can a separate apartment be designed in the villa?
Read: Modifying a villa plan to add a separate apartment.
What do I need to obtain the building permit?
Architectural, structural and MEP drawings approved by an engineering office. See our new building permit service.
How Abak Engineering Consultancy Helps
Abak is an accredited engineering office in Riyadh that designs small and medium-plot villas with practical layouts that make the most of every metre, with facades, 3D designs, construction drawings and the building permit. Learn about our design services, or contact us.
Regulatory information is based on the Balady platform and the Ministry of Municipalities and Housing, and procedures may be updated by the competent authority. Last reviewed: October 2026.