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This calculator helps estimate the likely structural engineering fee for residential Building Consent projects in New Zealand.
It is designed for architects, builders, contractors, and informed homeowners who already have a reasonable idea of the structural design scope.
The estimate is indicative only and is not a formal fee proposal, but it should give you a realistic fee range based on DTCE’s project experience and historical fee data.
This calculator is best suited to:
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Residential alterations, additions, new builds, and townhouses
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Architect-led projects
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Building Consent design work
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Projects up to approximately $3 million
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Buildings up to 3 storeys
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Single dwellings or townhouse-style residential buildings
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Lightweight timber framing, with or without reinforced concrete block walls
DTCE structural design deliverables may include PS1, structural calculations, drawings, Design Features Report, LBP Memorandum, B1/B2 compliance information, construction monitoring
recommendations, and specifications where required.
If your project includes multiple separate buildings, complete a separate calculation for each building.
How to use the calculator
For each item in the calculator, select the number of Specific Engineering Design (SED) parts required or choose Yes/No. For example, if your project requires 4 specific engineered beams, select 4. If an item is not required, select 0.
Site & Ground Conditions
Site specific wind assessment required
Select Yes if DTCE needs to determine/calculate the site wind speed
Site visit or soil testing required
Select Yes if you require a site visit for any purpose. The site visit could be for soil testing, an inspection, or an investigation of any kind.
Split level floors on sloping ground
Select Yes if the building floor levels step up or down with sloping ground. stepped floor levels are much trickier to design and detail for.
Foundations & floor structure
SED foundation design required
Choose "Mixed" if the style of foundation design changes across the building, like there is a timber subfloor on part and concrete foundation on another part.
Suspended concrete slab above ground level
Select Yes if there is a first floor concrete slab, traydeck slab, or other concrete floor structure not bearing directly on the ground
Superstructure & Bracing
Number of SED beam types/locations
Beams can be steel, timber or block masonry. An SED joist, rafter, or lintel size counts as one. This assumes posts and connection details also specified by engineer.
Number of portal frame locations
If a portal is repeated across duplicated townhouses, it's only 1 portal frame design. But if there are different locations in a house then it's multiple portals.
Number of floors requiring SED bracing design
Enter total number of floors/storeys requiring SED bracing. Bracing can be diagonal timber braces, GIB, plywood or blockwalls.
Are any walls using reinforced block masonry
This is additional to the bracing design because blockwalls have extra out of plane checks and detailing.
External & additional structural items
Number of retaining wall types / sizes (block or timber)
Enter number of different retaining walls requiring SED. Specialist retaining walls (e.g spray and pin) require double the time , so double the number.
SED Balustrade or balustrade support required
Most balustrades don't need engineering input, however examples that do include glass balustrade in an SED wind zone.
YOUR PROJECT ESTIMATE
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Estimated Cost Range
Estimated Delivery Timeframe
Project Fee Breakdown:
Project Administration & Setup
Co-ordination with Project Team
On-Site Assessment & Investigation
Engineering Design & Report Writing
Structural Drawings and Specifications
Quality Assurance and Internal Review
Client Advice & Options Review
Please Note:
The structural fee breakdown is an estimate only and is intended for rough
budgeting purposes.
For a fixed fee quote, please contact us
Vehicle barrier / car crash barrier required
If there is a car deck then a crash barrier is very likely to be needed.
Number of other structural items requiring design
Any other additional items not covered above, add one for each item
Project Role and Hourly Rate Breakdown
Lead Engineer
$180.00
Site Technician
$150.00
CPEng Signatory
$320.00
Senior Drafter
$220.00
Total Estimate
ESTIMATE RANGE TOTAL
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EXCL GST
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Please note:
Every project is different, and our fees are assessed individually depending on the scope, complexity, and specific project requirements. The structural fee breakdown is an estimate only and is intended for rough budgeting purposes.
For a fixed fee quote please contact us