Options appraisals for construction projects
Options appraisals are undertaken following the completion of feasibility studies. Their purpose is to assess a number of potential options before developing a concept design for the preferred option.
After assessing the feasibility studies, the client will decide which options the consultant team should develop. Ideally there will be no more than four options at this stage. If more options exist it may be necessary to carry out further high-level studies before proceeding to more detailed options appraisals.
Options appraisals might include diagrammatic options studies that enable the client to understand the broad pros and cons of the available options so that a preferred option can be selected.
These studies allow further assessments and discussions:
- An assessment of the risks of the options.
- Consultations with the local authority and other statutory authorities, to assesses possible planning permission requirements and other statutory requirements (such as the need for an environmental impact assessment for the options).
- Initial cost appraisals of the options.
Preparing appraisals may require further site surveys or site information. It may also be necessary to commission additional advice, such as planning advice, expertise on rights of light, engineering advice, or other specialist services depending on the complexity of the project. The need to commission other consultants will often be determined by the scale and location of a development and also by the client’s familiarity with the site and the local area. A large-scale development with underground constraints will almost certainly require engineering expertise in the early stages, whereas a residence in a traditional street may not. Both however may require an understanding of local authority or other statutory consultee positions.
The lead consultant can then co-ordinate the preparation of an options review report, from which the client can either select a preferred option or instruct the development of further options or appraisals.
The options review report might contain:
- A general description of the options.
- Diagrammatic sketch layouts.
- The overall consequences of each option for the client's operations.
- Assessment of compatibility with the clients vision, mission and objectives.
- Assessment of the overall feasibility of each option.
- Potential for future-proofing.
- Planning permission issues (including the potential requirement for an environmental impact assessment).
- Sustainability considerations.
- Impact on the local community and environment.
- Third-party dependencies.
- Value management exercises.
- Whole-life costs with a rudimentary assessment of costs/sqm, configuration and servicing.
- Time-frames, phasing and key milestones.
- Procurement route.
- Risks.
- Recommendations.
At this stage the client’s brief is likely to expand, partly from the conclusions of the appraisals but also from knowledge gained by research into planning precedents, legal issues, engineering data and the technical constraints and nature of the project.
Wherever possible, any information prepared or obtained should be in a format which can be readily shared and used, and should be stored and named in a way consistent with the long-term project and operational needs.
Once a preferred option has been selected, the consultant team may carry out further assessments to assist the client in preparing a business case and project execution plan for the preferred option before concept design begins.
[edit] Related articles
Featured articles and news
Shading for housing, a design guide
A look back at embedding a new culture of shading.
The Architectural Technology Awards
The AT Awards 2025 are open for entries!
ECA Blueprint for Electrification
The 'mosaic of interconnected challenges' and how to deliver the UK’s Transition to Clean Power.
Grenfell Tower Principal Contractor Award notice
Tower repair and maintenance contractor announced as demolition contractor.
Passivhaus social homes benefit from heat pump service
Sixteen new homes designed and built to achieve Passivhaus constructed in Dumfries & Galloway.
CABE Publishes Results of 2025 Building Control Survey
Concern over lack of understanding of how roles have changed since the introduction of the BSA 2022.
British Architectural Sculpture 1851-1951
A rich heritage of decorative and figurative sculpture. Book review.
A programme to tackle the lack of diversity.
Independent Building Control review panel
Five members of the newly established, Grenfell Tower Inquiry recommended, panel appointed.
Welsh Recharging Electrical Skills Charter progresses
ECA progressing on the ‘asks’ of the Recharging Electrical Skills Charter at the Senedd in Wales.
A brief history from 1890s to 2020s.
CIOB and CORBON combine forces
To elevate professional standards in Nigeria’s construction industry.
Amendment to the GB Energy Bill welcomed by ECA
Move prevents nationally-owned energy company from investing in solar panels produced by modern slavery.
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.
BSRIA Occupant Wellbeing survey BOW
Occupant satisfaction and wellbeing tool inc. physical environment, indoor facilities, functionality and accessibility.