Outline specification
Specifications are written documents that describe the materials and workmanship required for a development. They do not include cost, quantity or drawn information but need to be read alongside other contract documentation such as quantities, schedules and drawings.
Written information about materials and workmanship should not appear on drawings or in bills of quantities as this can result in contradictory specifications and can cause considerable confusion, instead they should refer to the appropriate clauses in the specification.
Specifications should be developed iteratively alongside the design, and not left until the preparation of production information.
The first stage in the development of a specification is the preparation of an outline specification. An outline specification is a brief description of the main components to be used in construction. They should be described in sufficient detail to allow the cost consultant to prepare some approximate quantities.
Components might include:
- Substructure.
- Superstructure.
- Cladding (including external windows and doors).
- Roofing.
- Internal walls and partitions.
- Internal doors.
- Ceilings.
- Flooring.
- Finishes.
- Building services (including lighting, heating, ventilation and air conditioning, water supply and drainage and other special installations).
- Fixtures and fittings (such as sanitary fittings).
- Landscape.
[edit] Related articles on Designing Buildings Wiki
- Bills of quantities.
- Contract documentation.
- Final specifications.
- Insulation specification.
- Output-based specification.
- Performance specification.
- Prescriptive specification.
- Procurement route.
- Production information.
- Project brief.
- Schedule of accommodation.
- Specification.
- Specification basics.
- Tender.
- Tender documentation.
Featured articles and news
ECA, JIB and JTL back Fabian Society call to invest in skills for a stronger built environment workforce.
Women's Contributions to the Built Environment.
Calls for the delayed Circular Economy Strategy
Over 50 leading businesses, trade associations and professional bodies, including CIAT, and UKGBC sign open letter.
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
























Comments
We have a set of 250 free Outline and Shortform specifications at arcat.com - http://www.arcat.com/users.pl?action=ProjectsAdmin&mf=04