Planning Permission Ireland

Snag Survey in Ireland — What a Snag Surveyor Does, What It Costs, and the Trap

Last updated 30/6/2026 · Reviewed 30/6/2026
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Snag survey in Ireland: €400–€900 for a 180 m² house. The surveyor finds 30–60 items you wouldn't. The cost is recovered in retention.

Snag survey in Ireland: €400–€900 for a 180 m² house. The surveyor finds 30–60 items you wouldn't. The cost is recovered in retention. Most first-time self-builders don't have the eye for the detail. The surveyor is a building professional who knows what to look for. Hire the surveyor before practical completion. They walk the house with a torch, a level, a thermal camera, and a moisture meter. They check: paint, trim, doors, windows, tiles, drainage falls, silicone seals, electrical sockets, plaster, plumbing, heating, MVHR ducts. The deliverable is a written report with photos and a snag list. Most contractors accept the report and fix the items; some push back on minor items. The retention is held until the snag is closed or in writing agreed.

TL;DR

  • Snag survey in Ireland: €400–€900 for a 180 m² house. The surveyor finds 30–60 items you wouldn't. The cost is recovered in retention.

  • Most first-time self-builders don't have the eye for the detail. The surveyor is a building professional who knows what to look for.

  • Hire the surveyor before practical completion. They walk the house with a torch, a level, a thermal camera, and a moisture meter.

When this matters most

You're approaching practical completion and considering a snag survey.

When this doesn't apply

The snag is closed.

Frequently asked questions

How much does a snag survey cost in Ireland?

€400–€900 for a 180 m² house. The surveyor finds 30–60 items you wouldn't. The cost is recovered in retention you keep.

What does a snag surveyor do?

Walks the house with a torch, a level, a thermal camera, and a moisture meter. Checks paint, trim, doors, windows, tiles, drainage falls, silicone, electrical, plumbing, heating, MVHR. Produces a written report with photos.

When should I hire a snag surveyor?

Before practical completion, 1–2 weeks before the contractor finishes. The report is shared with the contractor; the items are fixed before the CCC is signed. Don't sign BCAR until the snag is closed.

Sources

SCSI, Find a snag surveyor. https://www.scsi.ie/

Frequently asked questions

How much does a snag survey cost in Ireland?

€400–€900 for a 180 m² house. The surveyor finds 30–60 items you wouldn't. The cost is recovered in retention you keep.

What does a snag surveyor do?

Walks the house with a torch, a level, a thermal camera, and a moisture meter. Checks paint, trim, doors, windows, tiles, drainage falls, silicone, electrical, plumbing, heating, MVHR. Produces a written report with photos.

When should I hire a snag surveyor?

Before practical completion, 1–2 weeks before the contractor finishes. The report is shared with the contractor; the items are fixed before the CCC is signed. Don't sign BCAR until the snag is closed.

When this matters most

You're approaching practical completion and considering a snag survey.

When this doesn't apply

The snag is closed.

Where to go next

Next decision

The next step in your build sequence.