Core
Architectural Estimating Services in New Zealand
Design-stage cost estimates that help architects keep a client's brief and budget in step, before the drawings go to tender.
The hardest conversation in architecture is telling a client the design they love is 30 per cent over budget, after the tender comes back. Architectural estimating moves that conversation earlier, when the design can still change without redrawing everything.
We estimate from architectural drawings at concept, preliminary, developed or detailed design. At early stages, we use measured areas and element allowances; as the drawings mature, the estimate becomes a full measured takeoff. Either way, it is structured so you can see what is driving cost: the glazing ratio, the roof form, the cladding choice, the floor-to-floor height.
We also price design options side by side. If you are weighing a membrane roof against long-run metal, or brick veneer against weatherboard, we can show the cost difference across the whole building, including the knock-on effects on framing, flashings and linings.
Scope
What we measure in a architectural takeoff
| Item | Unit | What it covers |
|---|---|---|
| Gross and net floor areas | m² | Measured per level, with circulation and external areas shown separately. |
| Envelope ratios | m² / % | Wall-to-floor and glazing-to-wall ratios, both strong cost drivers. |
| Roof form | m² | Pitched, skillion and flat areas, with gutters and penetrations. |
| Cladding by type | m² | Each cladding system measured separately for option pricing. |
| Joinery | no. / m² | Window and door schedules with glazing areas. |
| Interior finishes | m² | Floor, wall and ceiling finishes by room type. |
| Design options | variance | Side-by-side costing of alternative materials or forms. |
Deliverables
What you receive
Architectural estimates include a design-stage summary in plain language, suitable for sharing with your client, alongside the detailed workbook for your own review.
| Itemised quantity sheet | Excel + PDF |
| Marked-up plans | Colour-coded PDF |
| Material and labour schedule | Excel |
| Assumptions and exclusions list |
Who it is for
Built for the people who price the work
- Builders
- Work with a design-and-build client to confirm the budget before a full tender.
- Subcontractors
- Understand the likely value of a package at design stage.
- Developers
- Compare two layout options for a townhouse site on cost per square metre.
- Architects
- Give a client a cost check at the end of developed design, with clear assumptions.
Process
How a architectural estimate runs
STEP 01
Upload plans
Send the current drawing set and tell us the design stage and the client's budget, if known.
STEP 02
Scope confirmation
We agree the level of detail, any options to price and which items will be allowances.
STEP 03
Takeoff and review
We measure and price, then check the result against cost-per-square-metre benchmarks for that building type.
STEP 04
Delivery
You receive the workbook, a client-ready summary and a list of the biggest cost drivers.
New Zealand context
Standards and practice
Design-stage estimates in New Zealand often coincide with the stages defined in the NZIA and NZRAB-familiar design process: concept, preliminary, developed and detailed design. We label estimates by stage so their accuracy is clear to your client.
Where the design is close to consent, we read the drawings for features that commonly add cost late, such as E2 risk-matrix scores that push a cladding onto a cavity system, or H1 energy efficiency requirements that change the glazing or insulation specification.
We measure and price to the drawings. Design compliance and building consent remain with your designer and building consent authority.
Cost drivers
What drives the cost of architectural work
01
Building form
Every corner, step and change of level adds wall, roof and flashing. A compact form with a simple roof is cheaper per square metre than an articulated one. We quantify the difference so form decisions can be made with numbers.
02
Glazing ratio
Large windows and doors cost more than walls they replace, and higher thermal performance adds further cost. We report glazing area as a ratio so you can see the effect of the design intent.
03
Floor-to-floor height
Taller storeys add framing, linings, cladding and stairs. Small increases in height spread through many trades, and we show that spread clearly.
04
Material selection
Cladding, roofing and interior finishes are where architectural intent is most visible, and where options are easiest to compare. We price alternatives across the whole building, including knock-on trades.
Where architectural estimates go wrong
Design-stage estimates often go wrong by being too precise too early. A figure to the dollar on a concept design suggests certainty that does not exist. We present early estimates with their allowances and assumptions so the client understands the range.
The opposite mistake is relying on a single per-square-metre rate. Rates hide the drivers, so they cannot tell you whether a bigger window or a different roof is affordable. A measured estimate, even a rough one, can answer those questions.
FAQ
Architectural Estimating questions
How accurate is a concept-stage estimate?
Less accurate than a detailed one, because less is known. We list our assumptions and allowances so the range of uncertainty is visible, rather than presenting a single falsely precise figure.
Can you price design alternatives?
Yes. Option pricing is one of the most useful parts of this service. We show the cost difference including knock-on trades.
Will you talk to my client?
The estimate is prepared for you. We provide a client-friendly summary, and we are happy to answer your questions so you can present it with confidence.
Do you replace a quantity surveyor?
On larger or complex projects, a registered quantity surveyor may be required by the client or funder. We are often used by smaller practices, or alongside a QS, to provide faster measured estimates.
Can you update the estimate at each stage?
Yes. Each revision tracks the changes from the previous version, so cost movement is easy to explain.
Related services
- Construction Estimating
A complete, trade-by-trade cost estimate built from your drawings, so you can price, tender or test feasibility with confidence.
- Residential Estimating
Estimates for new homes, townhouses, alterations and additions, measured from your consent drawings and laid out the way builders price.
- Doors and Windows Estimating
A full joinery schedule: every window and door by size, type, glazing and hardware, plus the flashings and trims to install them.
- Finishes Estimating
The fit-out that clients notice: tiling, splashbacks, cabinetry, fixtures, accessories and fit-off, measured from the finishes schedule.
Get a quote
Send your plans for a architectural estimate
Upload your drawings and we will reply with a fixed fee and turnaround before any work starts. No obligation.
- — PDF, DWG and ZIP accepted
- — Fees in NZD, excluding GST
- — Prefer email? Use the link in the footer