Sample Report — This is an example of a Detailed Cost Report. Your report will reflect your actual project details.

BeforeYouBuild.ie

30 May 2026

Ref: CCR-2026-904F7

Detailed Cost Breakdown

Prepared for Sample Customer

Project Summary

Project Type

Renovation & Extension

Location

County Cork

Floor Area

140 m²

Quality Level

Mid-Range

Storeys

1

Bathrooms

2

Kitchen

Included

Building Era

1970–1990

Estimated Cost

Including all fees, VAT, and extras

€310,984

€1,757 / m²

Detailed Cost Breakdown

Preliminaries

€19,680

Site Preliminaries

Site Setup & Temporary Works€4,920
Scaffolding & Access€3,936
Site Insurance€2,952
Health & Safety Compliance€2,952
Utilities During Construction€1,968
Skip Hire & Waste Management€2,952

Demolition & Alterations

€12,300

Demolition Works

Strip Out & Demolition€6,150
Structural Alterations€3,690
Waste Removal & Disposal€2,460

Renovation Scope

Renovation · 100 m² · Single-storey

Substructure

€18,000

Foundations & Ground Works

Excavation & Earthworks€5,400
Foundations (strip/raft)€6,300
Ground Floor Slab€3,600
Below-Ground Drainage€2,700

Superstructure

€27,000

Structural Frame & Walls

External Walls (blockwork/timber frame)€11,070
Internal Load-Bearing Walls€3,240
Roof Structure & Covering€7,830
Structural Steelwork€4,860

External Envelope

€22,500

Weatherproofing & Openings

External Insulation (wall & roof)€6,750
Windows & External Doors€7,875
External Render / Cladding€4,500
Fascia, Soffit & Gutters€3,375

Internal Partitions & Doors

€9,000

Partitions & Doors

Stud Partitions€3,600
Internal Doors & Ironmongery€4,050
Door Frames & Linings€1,350

Wall, Floor & Ceiling Finishes

€12,000

Finishes

Plastering & Skim Coat€3,600
Floor Finishes (tiles, timber, carpet)€3,600
Painting & Decorating€3,000
Ceiling Finishes & Coving€1,800

Fittings & Fixtures

€15,000

Fittings

Kitchen Units & Worktops€3,375
Kitchen Appliances€2,025
Kitchen Installation€1,350
Bathroom 1 — Sanitary Ware€1,050
Bathroom 1 — Tiling & Finishes€919
Bathroom 1 — Shower/Bath€656
Bathroom 2 — Sanitary Ware€1,050
Bathroom 2 — Tiling & Finishes€919
Bathroom 2 — Shower/Bath€656
Wardrobes & Storage€1,200
Skirting & Architrave€900
General Joinery€900

Mechanical Services

€15,000

Plumbing & Heating

Heating System (boiler/heat pump)€5,250
Radiators / Underfloor Heating€3,000
Plumbing First & Second Fix€3,750
MVHR / Ventilation€3,000

Electrical Services

€7,500

Electrical

Rewiring & Distribution Board€2,625
Sockets, Switches & Lighting€2,250
Fire & Smoke Detection€1,125
TV/Data/Security Cabling€1,500

External Works

€4,500

External Works

Driveway & Paving€1,575
Boundary Walls & Fencing€1,125
Surface Water Drainage€900
Landscaping & Planting€900

Structural Works Allowance

€30,000

Structural Modifications

Wall removals & structural openings€12,000
RSJ beams & load-bearing supports€7,500
Foundation works & underpinning€6,000
New ground floor slab (break-out & rebuild)€4,500

Allowance covers structural modifications to the existing property. If none of these specific works are involved, your cost may be lower than shown. Final figure will be informed by your structural engineer.

Energy Upgrade Allowance

€70,000

Fabric, Heating & Ventilation

Wall Insulation (external or internal)€21,000
Attic Insulation Upgrade€7,000
Airtightness Detailing & Membranes€10,500
Air-to-Water Heat Pump (supply & install)€21,000
Solar PV System (supply & install)€10,500

Windows & doors are included in the base renovation rate above. Potential SEAI grants may apply — see Grants & Incentives section.

Extension Scope

Extension · 40 m² · Single-storey

Substructure

€11,520

Foundations & Ground Works

Excavation & Earthworks€3,456
Foundations (strip/raft)€4,032
Ground Floor Slab€2,304
Below-Ground Drainage€1,728

Superstructure

€17,280

Structural Frame & Walls

External Walls (blockwork/timber frame)€7,085
Internal Load-Bearing Walls€2,074
Roof Structure & Covering€5,011
Structural Steelwork€3,110

External Envelope

€14,400

Weatherproofing & Openings

External Insulation (wall & roof)€4,320
Windows & External Doors€5,040
External Render / Cladding€2,880
Fascia, Soffit & Gutters€2,160

Internal Partitions & Doors

€5,760

Partitions & Doors

Stud Partitions€2,304
Internal Doors & Ironmongery€2,592
Door Frames & Linings€864

Wall, Floor & Ceiling Finishes

€7,680

Finishes

Plastering & Skim Coat€2,304
Floor Finishes (tiles, timber, carpet)€2,304
Painting & Decorating€1,920
Ceiling Finishes & Coving€1,152

Fittings & Fixtures

€9,600

Fittings

Wardrobes & Storage€3,840
Skirting & Architrave€2,880
General Joinery€2,880

Mechanical Services

€9,600

Plumbing & Heating

Heating System (boiler/heat pump)€3,360
Radiators / Underfloor Heating€1,920
Plumbing First & Second Fix€2,400
MVHR / Ventilation€1,920

Electrical Services

€4,800

Electrical

Rewiring & Distribution Board€1,680
Sockets, Switches & Lighting€1,440
Fire & Smoke Detection€720
TV/Data/Security Cabling€960

Construction Cost Summary

Construction Subtotal

€246,000

Professional Fees

Architect (10% of construction cost)

€24,600

Preliminary Design (Stage 1) (15%)

€3,690

Developed Design (Stage 2) (20%)

€4,920

Detailed Design & Planning (Stage 3) (25%)

€6,150

Tender & Contract (Stage 4) (10%)

€2,460

Construction Administration (Stage 5) (30%)

€7,380

Structural Engineer (3.5%)

€8,610

Foundation design, beam sizing, certification

Quantity Surveyor (2.8%)

€6,888

Bills of quantities & cost management

Total Professional Fees

€40,098

Professional fees are included in your total estimate above.

Admin & Regulatory

€1,345

VAT (13.5%)

€36,989

Total Project Cost (excl. land)

€310,984

Surveys Required

Topographical Survey

Site levels and boundaries

€800 – €1,500

BER Assessment

Building Energy Rating

€150 – €300

Ground Investigation Survey

Soil bearing capacity assessment

€1,200 – €2,500

Estimated Survey Costs

€950 – €1,800

Survey costs are indicative and should be confirmed with local providers. These costs are not included in the project total above.

Inflation Projections

In 6 months

€315,649

+1.50%+€4,665

In 12 months

€320,313

+3.00%+€9,329

In 24 months

€326,720

+5.06%+€15,736

Planning Permission Cost Estimate

Architect Fees to Planning Stage (40%)€9,840
Planning Application Fee€65
BCMS Registration Fee€30
Assigned Certifier Fee (pre-planning)€750
BER Assessment€300

Estimated Planning Permission Cost

€10,985

Typical Timeline

Hire Architect & BriefWeek 1–2
Preliminary DesignWeek 2–6
Planning Application SubmittedWeek 6–10
Planning DecisionWeek 10–18 (8 week statutory period)

Total: Approximately 4\u20135 months from hiring architect to planning decision.

Available Grants & Incentives

Toggle grants on to see how they reduce your total cost.

Disclaimer

This detailed breakdown is for guidance purposes only. Individual line items are estimated allocations based on typical Irish construction cost distributions for 2025/2026. Actual costs will vary depending on specific site conditions, design choices, contractor pricing, and market conditions. We recommend obtaining detailed quotes from qualified professionals before proceeding.