Understanding Structural Engineering Costs in Ireland 2025

When planning a construction project in Ireland, understanding structural engineering costs is essential for accurate budgeting. This comprehensive guide breaks down what you can expect to pay for structural engineering services in 2025.

Typical Structural Engineering Fee Ranges

Residential Projects

House Extensions:

• Simple rear extension (up to 40m²): €800 - €1,500
• Two-storey extension: €1,200 - €2,500
• Complex extension with steelwork: €1,500 - €3,500

Internal Alterations:

• Wall removal with steel beam: €400 - €800
• Multiple wall removals: €600 - €1,200
• Loft conversion: €1,000 - €2,000

New Build Houses:

• Standard 3-4 bed house: €2,500 - €5,000
• Bespoke architectural design: €4,000 - €8,000
• Complex sites (sloping, poor ground): €5,000 - €12,000

Commercial Projects

Commercial structural engineering fees are typically calculated as a percentage of construction cost:

• Simple commercial buildings: 0.8% - 1.5% of construction cost
• Complex commercial projects: 1.5% - 3% of construction cost
• Industrial structures: 1% - 2% of construction cost

Factors Affecting Structural Engineering Costs

1. Project Complexity

The structural complexity significantly impacts fees. A straightforward extension on good ground will cost less than a cantilevered structure on a sloping site with poor soil conditions.

2. Site Investigations

Additional costs may include:

• Trial pit excavations: €300 - €600
• Ground investigation reports: €1,500 - €5,000
• Topographical surveys: €400 - €1,200

3. Building Control Requirements

Depending on your project, you may need:

• Commencement Notice submissions
• Certificates of Compliance
• Fire Safety Certificates
• Disability Access Certificates

4. Construction Support

Site visits and construction support typically add 15-25% to the base design fee.

How to Get the Best Value

1. Engage early - Involving a structural engineer from project inception can save money by avoiding costly design changes
2. Provide complete information - Clear briefs reduce design iterations
3. Compare quotes - Get 3 quotes, but don’t choose solely on price
4. Check credentials - Ensure engineers are chartered members of Engineers Ireland or IStructE

What’s Included in Structural Engineering Fees?

A comprehensive structural engineering service typically includes:

• Initial consultation and site assessment
• Structural calculations
• Structural drawings (plans, sections, details)
• Specifications
• Building control submissions
• Contractor queries during construction
• Completion certification

When to Hire a Structural Engineer

You’ll need a structural engineer for:

• Any building extension (required by Building Regulations)
• Wall removals in load-bearing walls
• Loft conversions
• New builds
• Basement conversions
• Commercial fit-outs
• Fire damage assessments
• Pre-purchase surveys with structural concerns

Conclusion

Investing in quality structural engineering is essential for the safety and success of your project. While costs vary based on project specifics, understanding the typical fee ranges helps you budget effectively and make informed decisions.

For a detailed quote tailored to your project, contact Brickbolt Engineering for a free initial consultation.