Head office overheads
According to The Code of Estimating Practice, seventh edition, published by the Chartered Institute of Building (CIOB) in 2009, head office overheads are:
| The incidental costs of running a business as a whole. They are ‘indirect costs’ that cannot be directly allocated to production, as opposed to ‘direct costs’ which are the costs of production. Among other things, overheads may include rent, rates, director’s salaries, pension fund contributions and auditor’s fees. In accountancy, head office overheads are generally referred to as ‘administrative expenses’ whereas the direct costs of production are referred to as ‘cost of sales’. The apportionment of head office overheads to individual projects or as a percentage of company turnover is decided by management as part of a management policy. |
--CIOB
NB The Society of Construction Law Delay and Disruption Protocol, 2nd edition, February 2017, published by the Society of Construction Law (UK) defines head office overheads in very similar terms as:
| ...the incidental costs of running the Contractor’s business as a whole and include indirect costs which cannot be directly allocated to production, as opposed to direct costs which are the costs of production. Amongst other things, these overheads may include such things as rent, rates, directors’ salaries, pension fund contributions and auditors’ fees. In accountancy terms, head office overheads are generally referred to as administrative expenses, whereas the direct costs of production are referred to as costs of sales. |
See also: How to calculate head office overheads and profit.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
CIOB Apprentice of the Year 2025/26
Construction apprentice from Lincoln Mia Owen wins this years title.
Insulation solutions with less waste for a circular economy
Rob Firman, Technical and Specification Manager, Polyfoam XPS explains.
Recycled waste plastic in construction
Hierarchy, prevention to disposal, plastic types and approaches.
UK Net Zero Carbon Buildings Standard V1 published
Free-to-access technical standard to enable robust proof of a decarbonising built environment.
Prostate Cancer Awareness Month
Why talking about prostate cancer matters in construction.
The Architectural Technology podcast: Where it's AT
Catch up for free, subscribe and share with your network.
The Association of Consultant Architects recap
A reintroduction and recap of ACA President; Patrick Inglis' Autumn update.
The Home Energy Model and its wrappers
From SAP to HEM, EPC for MEES and FHS assessment wrappers.
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.




















