The design-development decision
Design development is the stage at which flooring should move from concept to specifiable envelope. Product family, wear layer, construction and colour range are resolved. Custom intent is identified and volume-tested against the schedule.
Decisions deferred to CD or tender either compress the procurement chain or force substitution. Neither serves the design outcome.
Programme implications of specification
Every specification carries a programme cost. Stock product from a distribution channel has one lead time. Direct-from-factory custom product has another. The difference — often two to three months — is set by the specification, not the supplier.
Aligning specification intent with the construction programme at DD prevents the awkward late-stage conversation about substitution or airfreight.
Understanding lead times at DD
Lead time at design development is a planning number, not a commitment. A defensible planning assumption for direct international supply is 12 to 16 weeks for standard-range engineered timber and vinyl, longer for custom colour or dimension.
Committing that window into the programme at DD produces a construction plan that the supply chain can meet. Committing a shorter window compresses the supply chain and transfers cost onto specification.
Custom versus stocked systems
Custom colour, format and dimension deliver design outcomes that stock systems cannot. They also impose minimum-order volumes, dedicated production runs and longer lead times. Reviewing the trade-off at DD is straightforward; reviewing it at tender is expensive.
Where custom intent exceeds available project volume, the honest response is to consolidate the specification against a stocked range that meets the intent within tolerance.
Documentation and coordination
DD-stage flooring documentation includes product family, technical envelope, colour reference, warranty target and known custom parameters. It is the reference the CD documentation extends, not the document tender pricing is based on.
Coordination with wet trades, joinery, transitions and services routing begins at DD. Late coordination produces the level-change details that become site RFIs.
Handover to tender
The transition from DD to tender is the point at which specification custody transfers to the procurement team. A clean handover carries the technical envelope, custom intent, control samples and programme assumptions together, in writing.
A DD package that documents these clearly produces tender returns that are comparable, defensible and aligned to the design intent.