Browser-only tools

Irish construction calculators

Quick checks for planning fees, development contributions, stamp duty and VAT. Always verify against the official source before quoting or filing.

Calculators

Choose a calculator

Development Contribution Estimator

Estimate a council contribution from floor area and an editable local-authority rate.

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Planning Application Fee Calculator

Quick national fee helper for houses, extensions and commercial floorspace.

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Site Stamp Duty Calculator

Revenue-rate helper for residential, non-residential and mixed-use site purchases.

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VAT on Construction Helper

VAT-inclusive/exclusive calculations for common Irish construction VAT scenarios.

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Worked examples

The kind of answer each calculator gives

Use these as quick orientation only. The calculators let you change the figures and link to the official source for the final check.

Worked example

Development contribution

250 m² at €45/m²

€11,250 rough contribution before exemptions or local scheme rules.

 Worked example

Planning fee

Domestic house application

€65 base planning fee; other use classes and floorspace can change it quickly.

 Worked example

Residential stamp duty

€1.2m purchase

1% on the first €1m plus 2% on €200k = €14,000.

 Worked example

Construction VAT

€10,000 labour invoice

At 13.5%, VAT is €1,350 and the VAT-inclusive total is €11,350.

Pick the right tool

Use each calculator at the right point in the project

  • Early planning budgetStart with planning fees and development contributions, then check the relevant council scheme before committing a client figure.
  • Buying a site or buildingUse the stamp-duty helper to separate residential, non-residential and mixed-use parts before speaking to a solicitor or tax adviser.
  • Pricing construction workUse the VAT helper to convert net/gross amounts and spot whether construction, materials or mixed supplies need more careful Revenue checking.
  • Reading a live leadOpen the calculator beside a real PlanningBrief lead so floor area, units, stage and our estimated construction value are visible while you work.

Use with PlanningBrief data

Move from rough numbers to real projects

Related live data

Project leads

Start from live planning records, then use a calculator to sanity-check the commercial signal.

Limits

What these calculators do not decide

  • Rough estimates onlyThe tools are browser-only sanity checks, not legal, tax, planning or quantity-surveying advice.
  • Local rules varyDevelopment contributions, special contributions, exemptions and conditions can differ by council and by permission.
  • Mixed-use needs careResidential, commercial, retention and phased schemes may need separate calculations rather than one blended figure.
  • Official source winsEach calculator links to an official or source context page; verify the latest rates before quoting, filing or paying.