Choosing quantity surveying software you can still defend a year later
Quantity surveying software is bought for take-off speed and kept for something else entirely: whether, eight months later, you can explain how a rate was built and why a variation was measured the way it was. Speed wins the demo. Defensibility wins the dispute, and the dispute is the expensive part.
01Take-off that another surveyor can check, not just a total
02Rate build-ups showing labour, material, plant and margin separately
03A rate library that survives the project it was built on
04Tender pricing with its assumptions attached to it
05Variations measured against the original bill, with the delta visible
06Valuation of work in place that ties to what the site reported
The reuse question
Ask what happens to a rate library between projects. If rates are per-file, every project starts from someone's memory of the last one, and the firm accumulates no institutional pricing knowledge at all. A library that carries forward is the difference between ten years of experience and one year repeated ten times.
Where most tools stop
Most QS software is written for the moment the tender is submitted, which is roughly a third of the surveyor's year. Variations, valuations and final accounts are the other two-thirds and they need the bill to still be live, still be structured, and still remember its own history. How to prepare a BOQ that survives the site is about that survival.
Where Ofivio fits, and where it does not
Ofivio Planning & QS treats the bill as a live object with volume groups, a carried-forward rate library and rate analysis, and the same bill is what purchase orders derive from and what work in place is certified against. It has no on-screen take-off from drawings and no BIM extraction — if measurement speed from drawings is your bottleneck, a specialist take-off tool is the better buy and can feed this. See quantity surveying and BOQ.
The categories that actually exist
Categories rather than a ranked list of vendors: a category is still true next year, and a ranked list with prices is wrong within a quarter. Named products are examples of the category, not endorsements, and we quote nobody else’s pricing because it changes without notice.
Spreadsheets
Excel with a firm's own templates
Optimises for
Unmatched flexibility, and every surveyor is already fluent
Where it stops
No history, no reuse across projects, and the reasoning behind a rate lives in the author's head
Fits
Individual surveyors and firms pricing a few jobs a year
Dedicated take-off and estimating tools
The specialist measurement and estimating packages
Optimises for
Fast, precise measurement — often with on-screen take-off from drawings
Where it stops
The output is an estimate. Procurement, certification and the ledger are somebody else's problem
Fits
Estimating teams whose job ends when the tender is submitted
Model-based quantity extraction
Quantity take-off from BIM models
Optimises for
Quantities derived from the model, so they update when the model does
Where it stops
Requires a well-built model, which most projects in most markets do not have
Fits
Firms working consistently in BIM with disciplined modelling standards
Project business systems with a native bill
Ofivio, and construction suites where the BOQ is a first-class object
Optimises for
The bill is the same object that becomes purchase orders and gets certified against — measured once, used to the end
Where it stops
No on-screen take-off from drawings and no model extraction
Fits
Practices and contractors where the same bill has to serve pricing, buying and certification
Who this is not for
If you are on this list, Ofivio is the wrong purchase and we would rather you know now than in month three.
×Surveyors whose main need is on-screen take-off from PDFs and drawings
×Firms working consistently in BIM who want model-derived quantities
×Cost consultants who only need a benchmarking database
