🇹🇱 Timor-Leste · Standards & approvals · Updated 2026
Walls & structure in Timor-Leste
External walls in Timor-Leste are conventionally 225 mm thick, built at about 110 units per m² of wall face, with internal partitions at 115 mm. Storey height is normally 2.7 m, and mortar is mixed 1:5.
Walls & structure is one of the requirements that decides what your building actually has to be — and therefore what it costs. This page sets it out for Timor-Leste specifically, from that country's own construction conventions and site conditions, with the practical sequence to follow and the cost consequences spelled out.
Requirements in Timor-Leste
| Requirement | Value | Why it matters |
|---|---|---|
| External wall thickness | 225 mm | Carries roof and floor loads, resists weather, and sets the footing width beneath it. |
| Units per m² (external) | 110 | Follows from the unit format used locally — the single biggest driver of the masonry quantity. |
| Internal partition | 115 mm at 55/m² | Non-loadbearing, but subject to acoustic and fire expectations between dwellings. |
| Storey height | 2.7 m | Every extra 100 mm of ceiling height adds masonry, plaster and paint on every wall in the building. |
| Mortar mix | 1:5 | Weaker than the units by design — mortar should crack before the masonry does. |
| Ring beam reinforcement | 110 kg/m³ | Ties the walls together at eaves level and distributes roof load. |
| Cavity construction | Not typical | Solid walling is the convention here; damp is managed by render and overhang instead. |
| Seismic band | low | Loadbearing masonry is acceptable without special detailing. |
What to do, in order
- 01Confirm the walling unit locally available
The 110 units/m² figure follows from the format sold in Timor-Leste. Confirm what your supplier actually stocks before finalising quantities — a different unit format changes every masonry number on the job.
- 02Decide loadbearing versus framed
Single storey and simple two-storey houses are almost always cheaper in loadbearing masonry. Long spans, large openings and anything above three storeys move to a frame.
- 03Design the openings
Every opening needs a lintel with bearing each side, and every large opening interrupts the load path. Openings are where masonry design actually happens.
- 04Detail the ring beam
A continuous ring beam at wall-plate level ties the structure together and spreads roof load. It is standard practice and should never be value-engineered out.
- 05Have it checked
Wall thicknesses here are convention, not a structural calculation for your building. An engineer signs off the load path.
What it does to the cost
- —Walling and superstructure is typically 20–25% of construction cost. At 110 units/m² the quantity is very sensitive to wall area, and wall area is perimeter × height.
- —A compact plan shape is the cheapest structural decision available. Two houses of identical floor area can differ 15% in walling cost through plan shape alone.
- —Mortar at 1:5 is a large share of the site cement bill — richer mixes cost real money across a whole house.
Price the building these rules describe
Upload your drawings and get an itemised bill of quantities in USD ($), measured to the Mapa de Quantidades standard Timor-Leste professionals use.
Generate my Timor-Leste BoQWalls & structure in Timor-Leste — frequently asked
What are the wall and structural requirements in Timor-Leste?
+
External walls in Timor-Leste are conventionally 225 mm thick, built at about 110 units per m² of wall face, with internal partitions at 115 mm. Storey height is normally 2.7 m, and mortar is mixed 1:5.
External wall thickness in Timor-Leste — what is it?
+
225 mm. Carries roof and floor loads, resists weather, and sets the footing width beneath it.
How does this affect what the building costs?
+
Walling and superstructure is typically 20–25% of construction cost. At 110 units/m² the quantity is very sensitive to wall area, and wall area is perimeter × height. A compact plan shape is the cheapest structural decision available. Two houses of identical floor area can differ 15% in walling cost through plan shape alone. Mortar at 1:5 is a large share of the site cement bill — richer mixes cost real money across a whole house.
What is the first thing I should do?
+
Confirm the walling unit locally available: The 110 units/m² figure follows from the format sold in Timor-Leste. Confirm what your supplier actually stocks before finalising quantities — a different unit format changes every masonry number on the job.
Is this legal or code advice?
+
No. These are conventional practice and planning allowances, compiled so a cost estimate is realistic rather than confidently wrong. The building authority in your municipality, and a professional registered in Timor-Leste, are the only authorities on what your project must comply with.