Quantity Surveyor Quotes in Ireland
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A quantity surveyor (QS) is the professional who keeps your construction project on budget. They estimate costs before construction begins, prepare bills of quantities for tendering, assess builder's quotes, manage costs during the build, and handle the final account when the project is complete. For any construction project over €50,000, a QS can save you significantly more than their fee.
In Ireland, quantity surveyors are particularly valuable for self-builds, large extensions, and renovation projects where costs can spiral if not managed professionally. The QS provides an independent cost estimate against which builder's quotes can be assessed. They identify when a quote is too high (overpaying), too low (the builder has missed something and will hit you with extras), or about right.
For disputes over construction costs (builders claiming extras, disagreements over the scope of work, final account negotiations), a QS provides independent, expert assessment that carries professional weight. Many construction disputes that end up in expensive legal proceedings could have been avoided with QS involvement from the start.
Quantity surveyors are members of the Society of Chartered Surveyors Ireland (SCSI). Comparing quotes ensures competitive fees and helps you find a QS experienced in your project type.
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Typical pricing for quantity surveyor services in Ireland (2026):
| Service | Typical Cost | Notes |
|---|---|---|
| Cost estimate (extension) | €500 | €1,500 | Project complexity |
| Full QS service (new build) | €3,000 | €10,000 | Project size, scope |
| Bill of quantities | €1,000 | €3,000 | Project complexity |
QS fees are typically 1.5 to 3% of the construction cost for full cost management services. For a €200,000 self-build, that is €3,000 to €6,000. Individual services (cost estimate, tender analysis, final account) can be quoted as fixed fees. The investment is justified by the savings: a QS typically identifies 5 to 15% savings through competitive tendering, accurate specification, and cost control during construction.
What to Expect: The Quantity Surveyor Process
- Initial cost estimate based on the architect's drawings and specification.
- Bill of quantities preparation for competitive tendering.
- Tender analysis: comparing builders' quotes on a like-for-like basis.
- Construction phase cost management: monitoring expenditure, assessing variations, certifying payments.
- Final account: agreeing the final construction cost with the builder.
Common Mistakes to Avoid
- Not engaging a QS for a self-build. Self-builds commonly exceed budget by 15 to 25%. A QS helps prevent this.
- Comparing builder's quotes without a bill of quantities. Without identical documentation, quotes are not comparable.
- Not managing variations during construction. Every change on site costs money. A QS tracks these and agrees costs before the work is done.
- Waiting until there is a cost dispute to involve a QS. Prevention is far cheaper than resolution. Engage a QS from the start.
- Choosing the lowest builder's quote without QS analysis. The lowest quote may have omissions that will appear as expensive extras during the build.
What to Look for When Hiring a Quantity Surveyor Professional
SCSI membership with RICS qualification. Experience in residential construction. Professional indemnity insurance. Independence from the builder (a QS should not have a financial relationship with any of the tendering builders).
Questions to Ask Your Quantity Surveyor Professional
- Are you SCSI/RICS qualified? Professional membership ensures qualifications and accountability.
- What are your fees and what do they cover? Understand whether the fee covers full cost management or specific services only.
- Have you worked on projects similar to mine? A QS experienced in your project type provides more accurate estimates.
- Can you help me assess builder's quotes? Comparing quotes on a like-for-like basis is one of the most valuable services a QS provides.
- How do you handle builder's extras and variations? Variations are where costs spiral. A QS who manages this process protects your budget.
- Are you independent of the builders tendering? Independence ensures objective assessment of quotes and costs.
Frequently Asked Questions
Full cost management: 1.5 to 3% of construction cost. Cost estimate only: €500 to €1,500. Tender analysis: €500 to €1,000. Final account: €500 to €1,500. The fee typically pays for itself many times over through cost savings.
For extensions under €50,000, a QS is optional but useful for comparing quotes. For extensions over €50,000, a QS is strongly recommended. For self-builds (€200,000+), a QS is essential for budget management.
A detailed document listing every item of work and material in the project, with quantities measured from the architect's drawings. It allows builders to price on an identical basis, making quote comparison meaningful. Without a bill, builders price from drawings and make their own assumptions, making quotes difficult to compare.
By producing accurate cost estimates before tendering, ensuring competitive pricing through detailed bills of quantities, identifying errors and omissions in builder's quotes, managing variations during construction, and negotiating the final account. Typical savings: 5 to 15% of construction cost.
Ideally, before the architect completes the tender documents. The QS can provide a cost estimate at design stage (helping you adjust the design to budget before tendering) and prepare the bill of quantities for the tender process.
Yes. A QS can independently assess disputed costs, review the scope of work, evaluate claims for extras, and provide an expert opinion that carries professional weight in negotiations or formal dispute resolution.
Quantity Surveyor Quotes by County
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