Briefing: Deciding What You Actually Want

The brief records what the building must do, how it will be used, which requirements are fixed, and what the budget and timeframe are. It is the shortest phase and the one with the greatest leverage, because everything that follows either serves the brief or drifts from it.

A useful brief distinguishes between requirements and preferences. Knowing that four bedrooms and a separate guest entrance are non-negotiable, while the swimming pool is desirable, allows sensible decisions later when something has to give.

Concept and Design Development

Concept design tests arrangements against the brief and the site: massing, orientation, circulation, and the relationship between spaces. It should be evaluated on whether it works, not on how attractive the visualisation is.

Design development then resolves the concept into a coordinated proposal with the structural and services engineers involved. Column positions, riser locations, slab thicknesses, and plant space all become fixed here, and the earlier they are agreed, the fewer compromises the architecture has to absorb later.

This is the correct phase for a cost check. Comparing an estimate against the budget while the design can still change is cheap; discovering the gap after tender means either redesign or reduction in specification.

Approvals and Construction Documentation

Statutory submissions and any required approvals proceed in parallel with the preparation of construction information. Both need time in the programme, and both depend on the design being genuinely settled rather than partially resolved.

Construction documentation is the phase most often compressed, and compressing it is expensive. Drawings and specifications that leave decisions open transfer those decisions to site, where they are made quickly, by whoever is present, and usually not in the client's favour.

  • Statutory submissions and permits, with realistic durations allowed
  • Coordinated drawings and specifications issued for construction
  • Schedules of finishes, doors, ironmongery, and sanitaryware
  • Details for every junction that a trade will have to interpret

Procurement and Tendering

Contractors price the documented design, or in a design-and-build route the contractor is appointed against the employer's requirements. Either way, this phase produces the contract: scope, sum, programme, payment terms, and the procedures for change and delay.

Long-lead items should be identified now if they were not identified earlier. Imported stone, bespoke joinery, specialist glazing, lifts, and major plant can all determine the critical path, and ordering them late is a common cause of a project finishing late for reasons unrelated to site productivity.

Construction

Site work follows a sequence that is largely dictated by physics: enabling works and excavation, foundations and substructure, superstructure, envelope and waterproofing, first-fix services, blockwork and plaster, second-fix services, finishes, and external works. Trades overlap, but the order rarely bends.

The client's role during construction is narrower than many expect but still critical: making decisions when asked, on time, and resisting the temptation to change instructions verbally on site. The contractor's role is to supervise, inspect, and record.

Inspection hold points matter here more than progress percentages. Cover checks before pours, waterproofing tests before covering, and services inspections before ceilings close are the moments when quality is either secured or lost.

  • Enabling works, excavation, and substructure
  • Superstructure and slabs
  • Envelope, roofing, and waterproofing
  • First-fix services, blockwork, and plaster
  • Second-fix services, finishes, and external works

Testing, Commissioning, and Handover

Mechanical and electrical systems are tested, balanced, and commissioned, and the results are documented. This phase is regularly underestimated, because it depends on the building being substantially complete, power being available, and systems being accessible.

Handover transfers the building along with as-built drawings, warranties, operation and maintenance manuals, commissioning records, and training for whoever will operate the systems. Snagging should be substantially closed before this point rather than treated as an activity that continues afterwards.

The Defects Period

After handover, an agreed period follows during which the contractor rectifies defects that emerge in normal use. Retention is typically released at its end, which gives both parties an interest in closing items properly.

This period also reveals how a building performs through a full cycle of seasons and occupancy. Recording issues carefully during it, rather than reporting them all at the end, is the approach that gets them fixed.

Key takeaways

  • The brief has more leverage over the outcome than any later phase.
  • Check cost against budget while the design can still change cheaply.
  • Compressing documentation transfers decisions to site, where they cost more.
  • Identify long-lead items early; they often set the critical path.
  • Commissioning needs real time in the programme, not the leftover days.