How many square metres the NTC 4595 requires for your school
Put in the groups per year and out come the classrooms, the open areas, the green space and the school garden. The areas per pupil did not move between 2020 and 2025: what changed is where they are taken from, and that is the part that costs the contract.
School accommodation schedule
657.5 m²
Classroom area (indoor) · 390 pupils
975 m²
Outdoor areas
The rest of the schedule is missing: toilets, administration and spaces of types B to F. Neither figure is the built area or the site area.
| Preschool · 2 classrooms · 20 | 80 m² |
| Primary and secondary · 10 classrooms · 35 | 577.5 m² |
| Circulation, outdoor gathering space and planted areas · 2.5 m² per pupil | 975 m² |
| Of that, planted · at least 60 % | 585 m² |
| Of the outdoor area, under continuous planting of native or adapted species, school garden included · at least 30 % | 292.5 m² |
| Curricular outdoor areas · 0.7 to 1.65 m² per pupil | 273 m² a 643.5 m² |
| School garden, with irrigation water allowed for | 30 m² |
Curricular outdoor areas are capped within the 2.5 m² per pupil: they are not added on top of the outdoor area, they come out of it.
Check first what did not change
It is the first thing a team needs to know before redoing anything, which is why it comes before the list of changes. If your schedule already complied, this part still stands.
- The classroom areas per pupil: preschool 2.00 m², primary and secondary 1.65 m², multigrade 1.80 m².
- The 2.5 m² per pupil for circulation, outdoor gathering space and planted areas.
- The minimum 60 % of that outdoor area to be planted, half of which (30 % of the outdoor area) under continuous planting of native or adapted species, school garden included.
- The school garden: a minimum of 30 m² up to 500 pupils, and 50 m² above that.
- The effective-use percentages for each type of space: 80 % for types B, C and F; 90 % for A and D; 100 % for E.
And what did change
- The table that gave the size of the site left the normative body of the standard. In 2020 Table 2 sat in chapter 4, which is normative; in 2025 it is Table A.1 of an informative annex that states its tables «are not for mandatory use». The area of a site can no longer be justified by citing a row.
- Curricular outdoor areas were brought in, clause 5.3.6.3. The term does not appear once in the 2020 edition.
- Car parking provision is delegated to local planning instruments. In 2020 the standard set one car space for every five cycle spaces, at 20 m².
- Chapter 8 stopped being called «comodidad» and became «confort». If your tender document cites «comodidad visual, numeral 8.2», it is citing the old edition.
How binding it is
The NTC 4595 does not declare itself mandatory. What makes it enforceable on a public project is article 3 of Resolución 1349 de 2022, issued by the Ministry of Education, which places compliance among the categories that can be funded with Ley 21 de 1982 money or with national funds assigned to the Ministry. Decreto 1077 does not mention it once: the building permit does not require it.
Do not redo the site layout on hearsay. Before moving a block, ask for the clause that requires moving it.
Where it comes from
The figures per pupil
NTC 4595:2025, the Colombian standard for educational buildings. Preschool classroom 2.00 m² per pupil, primary and secondary 1.65, multigrade 1.80, plus 3 m² per classroom for the teacher’s station where a primary or secondary group falls below thirty. Outdoor areas: 2.5 m² per pupil of circulation, outdoor gathering space and planted areas, of which no less than 60 % planted and no less than 30 % of the outdoor area under continuous planting of native or adapted species, school garden included. School garden: a minimum of 30 m² up to 500 pupils and 50 m² above that.
What is new in 2025
Curricular outdoor areas, clause 5.3.6.3, at 0.7 to 1.65 m² per pupil and capped within the 2.5 m² of outdoor area. The term does not appear once in the 2020 edition.
How binding it is
The standard does not declare itself mandatory and carries no transitional regime. The instrument is article 3 of Resolución 1349 de 2022, issued by Colombia’s Ministry of Education, which places compliance among the categories that can be funded with Ley 21 de 1982 money or with national funds assigned to the Ministry. Decreto 1077 de 2015 does not mention it once: the building permit does not require it.
Why it can be quoted
The NTC 4595 can be quoted (unlike other Colombian technical standards) because the Ministry of Education publishes it with express authorisation from ICONTEC, the national standards body, not because ICONTEC’s catalogue is open.
What this tool does not claim
A tool that answers what its source does not say is worse than no tool at all. This is what is deliberately left unanswered here, and why.
- It does not work out the size of the site, and that is not an omission. The table that gave it sat in chapter 4, which is normative, and in 2025 became Table A.1 of an informative annex stating that its tables «are not for mandatory use». The area of a site can no longer be justified by citing a row.
- It reproduces none of the standard’s tables. Both editions are ICONTEC copyright documents and carry «reproduction prohibited». Clauses are cited here and individual figures used, which is legitimate quotation; to work from it you have to open the document.
- That the floating reference «NTC4595» in Resolución 1349 implies the latest edition applies is our reading, not something written down. The resolution cites the standard without a year.
- It does not cover a school’s full schedule of accommodation: the supporting spaces, the sanitary facilities, accessibility, comfort and life safety are missing, and each is a whole chapter of the standard.
- It does not check your municipality’s POT (the local land-use plan), to which the 2025 edition delegates car parking, and which may require things the technical standard does not.
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