Client-side tools
Irish construction calculators.
Fast browser-only helpers for rough planning fees, contributions, stamp duty and VAT checks. Always verify against the official source before quoting or filing.
Development Contribution Estimator
Estimate a council contribution from floor area and an editable local-authority rate.
Planning Application Fee Calculator
Quick national fee helper for houses, extensions and commercial floorspace.
Site Stamp Duty Calculator
Revenue-rate helper for residential, non-residential and mixed-use site purchases.
VAT on Construction Helper
VAT-inclusive/exclusive calculations for common Irish construction VAT scenarios.
Pick the right tool
Use each calculator at the right point in the project.
| Scenario | PlanningBrief note |
|---|---|
| Early planning budget | Start with planning fees and development contributions, then check the relevant council scheme before committing a client figure. |
| Buying a site or building | Use the stamp-duty helper to separate residential, non-residential and mixed-use parts before speaking to a solicitor or tax adviser. |
| Pricing construction work | Use the VAT helper to convert net/gross amounts and spot whether construction, materials or mixed supplies need more careful Revenue checking. |
| Reading a live lead | Open the calculator beside a real PlanningBrief lead so floor area, units, stage and value band are visible while you estimate. |
Use with PlanningBrief data
Move from rough numbers to real projects.
These calculators work best beside live planning, tender and commencement signals, so each estimate has a real project context.
Worked examples
Sanity-check the type of answer each calculator gives.
Use these as quick orientation only. The calculators let you change the figures and still link back to the official source for the final check.
Development contribution
250 m² at €45/m²
€11,250 rough contribution before exemptions or local scheme rules.
Worked examplePlanning fee
Domestic house application
€65 base planning fee; other use classes and floorspace can change it quickly.
Worked exampleResidential stamp duty
€1.2m purchase
1% on the first €1m plus 2% on €200k = €14,000.
Worked exampleConstruction VAT
€10,000 labour invoice
At 13.5%, VAT is €1,350 and the VAT-inclusive total is €11,350.
Limits
What these calculators do not decide.
| Limit | Why it matters |
|---|---|
| Rough estimates only | The tools are browser-only sanity checks, not legal, tax, planning or quantity-surveying advice. |
| Local rules vary | Development contributions, special contributions, exemptions and conditions can differ by council and by permission. |
| Mixed-use needs care | Residential, commercial, retention and phased schemes may need separate calculations rather than one blended figure. |
| Official source wins | Each calculator links to an official or source context page; verify the latest rates before quoting, filing or paying. |
Use the calculators context, then move into source-linked leads, the map, alerts, the weekly digest or Premium early access when repeat review becomes important.