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How much school
fits on your site?

Enter a pupil number and draw a boundary. SyntaxLab lays out block plans for Irish second level schools, checks each one against the Department’s design guide and fire regulations, and estimates its cost.

Test your siteFree during the research phase. No account needed.

Every plan comes with a receipt covering 89 rules, each traced to its source in the published guidance.

Road
TeachingSportsDining and sharedOfficesEntrance
Real output, not an illustration: 500 pupils on a 1.05 ha five sided site, 5 floors, about €30.0 m.

A school site is usually judged long before anyone can afford to test it properly

Is this plot big enough? How tall would it have to go? What would it cost? Those questions come up at the very start, when no design team is appointed and a feasibility study is hard to justify.

SyntaxLab answers them with several worked options in seconds, using the same published room schedules, area limits and cost limits for every site, so the options can be compared fairly.

One early answer, for everyone at the table

Three groups tend to need this question answered before they can move.

Government and school patrons

  • Compare candidate sites like with likeEvery site is tested against the same schedule, area limit and rules.
  • See a cost range earlyEstimates start from the Department’s April 2025 cost limits.
  • Share the reasoningPrint a compliance report that shows what passes and what fails.

Architects

  • Skip the blank page at feasibilityStart from up to 16 options across 13 plan types, not one first idea.
  • Check the brief as you goRooms and sizes come from the schedule for your pupil number.
  • Carry on in your own softwareExport any plan as a DXF for AutoCAD, Revit or Rhino.

Developers and landowners

  • Test land reserved for a schoolSee whether a boundary can hold a given school before you commit to the masterplan.
  • See the height and footprintEach plan shows floors, floor area and its fit on the site.
  • Know when it won’t fitIf nothing fits, you get the clear width the site is missing.

Know what a site can hold
before anyone pays for a drawing.

From a number to a plan in three steps

  1. 1

    Set the school and the site

    Enter 200 to 2,000 pupils and trace your boundary on the map, marking which edge faces the road.

  2. 2

    Get several plans

    SyntaxLab works out the rooms the school needs and tries up to 13 plan types, keeping the ones that fit, going taller where the site is tight.

  3. 3

    Compare and take it further

    See how each plan fits the site, compare the options side by side, then print a feasibility report or export a DXF.

One site, five different answers

These are unedited results for 500 pupils on the site shown above. Failures and overruns stay visible, because that is the point of testing early.

L shaped along the road

Wings on two edges, hall in the angle.

Floors
5
Floor area
10,157 m²
Of area limit
138%
Estimated cost
€30.0 m

138% of the area limit

U shaped

Open at the back, wrapping three edges.

Floors
4
Floor area
10,602 m²
Of area limit
144%
Estimated cost
€31.7 m

144% of the area limit

Ring round a court

Follows every edge. Largest and costliest.

Floors
4
Floor area
11,708 m²
Of area limit
159%
Estimated cost
€35.5 m

159% of the area limit · 1 required rule failing

Stacked block

Compact and rectangular. Ignores the angles.

Floors
4
Floor area
7,924 m²
Of area limit
108%
Estimated cost
€23.2 m

108% of the area limit · 1 required rule failing

Slim block

One straight bar. Closest to the area limit.

Floors
5
Floor area
7,894 m²
Of area limit
107%
Estimated cost
€22.1 m

107% of the area limit

Area limit is the Department’s limit for 500 pupils. Following a site’s edges costs extra corridor and corner space, which is why these plans run over it. Ground floors are drawn at the same scale.

Built on published guidance you can check

Open the rulebook to read every rule in plain words, with the section it comes from.

13plan types
89rules on every receipt
15of them required
200 to 2,000pupils
  • Post Primary School Design Guide, SDG 02-03Department of Education. Room sizes, placement and layout rules, with its Schedules of Accommodation.
  • Technical Guidance Document BFire safety. Escape distances, stairs and fire doors along corridors.
  • Circular 0030/2025Department of Education cost limits from April 2025, the starting point of each estimate.
  • Research benchmarksNordic case studies and space syntax, scored separately so they never pass as regulation.

Read the rulebook

Questions worth asking first

Is SyntaxLab free?

Yes, during the research phase. Paid options may come later for professional use, and anything like that will be announced here first.

Is a plan from SyntaxLab a finished design?

No. Plans are early block studies for testing what a site can hold. They show rooms, floors and rough cost, and they need an architect to become a design.

Has the Department of Education approved it?

No. SyntaxLab is an independent research tool made for an architecture research project. It uses the Department’s published guidance but carries no approval from the Department.

What rules does it check?

Each plan gets a score receipt covering 89 rules: 82 from the design guide and fire regulations, 15 of them required, and 7 research benchmarks scored separately. Eight of the 82, including 2 required rules, cannot be checked at block stage yet and are marked as such.

How accurate is the cost?

It starts from the Department’s April 2025 cost limits and adjusts for the shape of the plan. It leaves out furniture and equipment, professional fees, abnormal site costs, land and price rises since April 2025, so treat it as a way to compare options.

Will every site get a plan?

No. A very narrow site, or a high pupil number on a small site, can have no plan that fits. SyntaxLab then tells you the clearest rectangle on the site and the width it needs.

Can I use the plans in my own software?

Yes. Any plan can be exported as a DXF drawing for AutoCAD, Revit or Rhino, and you can print a compliance report or save it as a PDF.

Do I need an account?

No. There is nothing to install and no sign up. Your designs are saved in your own browser, so they stay on that device unless you export them.

Have a real site to test?

Pilot partners, questions and corrections to the rules are all welcome. Tell me a little about what you’re working on and I’ll reply by email.

Your details are used only to reply to you.

Test your first site
in a few minutes

Free during the research phase, with no account and nothing to install. Your designs stay in your browser until you export them.

Test your site