The choice between a single-story and a split-level courtyard is not a style decision — it follows from the site, the program, and the climate. Both can organize a house effectively around a patio. They solve different problems.
In MÉTODO, this choice appears in the first round of the matriz de opciones — the structured comparison of design alternatives we run before committing to a scheme. Each option is evaluated against the same criteria: how well it manages climate, how clearly it organizes movement, how it sits on the terrain. The matrix makes the decision visible.
What Single Story Does Well
A single-story courtyard keeps all rooms on one level, with the patio as the shared outdoor room connecting them. This has several structural and climatic advantages.
First, every room has direct access to the exterior without a stair. For family residences with elderly occupants or young children, this matters. Second, the structural system is simpler: bearing walls or columns run in one direction without the complication of split floors.
Third, and most relevant to climate performance: single-story sections allow hot air to rise uniformly across the full ceiling plane and exit through clerestory vents or high openings at the courtyard perimeter. The ventilation path is direct and predictable.
The single-story courtyard works best on lots that are flat or slope less than 6 percent. On steeper terrain, the excavation required to create a flat building platform increases both cost and environmental impact.
What Split Level Does Well
A split-level courtyard organizes the program on two or more elevations, with the changes in level often coinciding with changes in function: public areas at one level, private areas at another, service areas at a third.
The section is the tool that makes this legible. La sección como relato — the section as narrative — is the technique of using vertical transitions to tell the inhabitant where they are in the house. You descend into the social level. You climb to the bedrooms. The movement itself communicates privacy and program.
Split-level design is specifically suited to sloped terrain. Rather than cutting into the hill to create a flat platform, the house steps with the grade. The courtyard sits at the central level — typically the social level — and rooms above and below are connected to it visually if not directly.
This reduces excavation volume significantly on lots with a 10 to 25 percent slope. Less cut-and-fill means less structural reinforcement of the retaining condition and less disruption to the water table and existing vegetation.
The Courtyard Stays Constant
In both typologies, the patio as organizer principle applies without modification. The courtyard is the spatial anchor. Rooms are arranged around it, not despite it.
What changes is the relationship between the courtyard and the different levels. In a single-story house, the patio is at the same grade as all the rooms. In a split-level house, the patio may be at the grade of the social level, with bedrooms looking down onto it and service areas at grade below.
This vertical relationship opens design possibilities that single-story cannot access: a bedroom that overlooks the courtyard from above has a different quality of privacy and view than one that opens directly onto it.
Climate Response and Section Strategy
The section strategy affects how the building manages solar gain and ventilation. In a single-story design, the roof plane is continuous and the section is shallow. Overhang depth controls solar access to the patio and to the rooms around it.
In a split-level design, the section is taller and the thermal dynamics are more complex. Upper-level rooms gain heat faster because they have more roof exposure. Lower-level rooms — partially embedded in the terrain — tend to stay cooler because the ground acts as a thermal buffer.
This thermal asymmetry between levels can be used deliberately. Bedrooms on the lower level stay cool through the night without mechanical cooling. Living areas on the upper level, where activity generates heat, benefit from high ceilings and clerestory ventilation.
Asoleamiento — the analysis of sun path and shadow — determines the optimum orientation for the courtyard opening in each case. This is calculated, not estimated.
Próximos pasos
Deciding between single story and split level requires a site survey, a slope analysis, and a clear program. In MÉTODO, we build the matriz de opciones for every project: two or three section strategies evaluated against the same criteria before any scheme is developed in detail.
If you are working through this decision for a project in Mexico or Colorado, the starting point is always the terrain. Conoce el método de MÉTODO.