Office Home Design for Business: How to Build a Practical London Workspace Brief

Start with what the office must enable

Office design for business starts with the work your team needs to do, not with a visual style or a collection of furniture ideas. Your brief should connect people, activities and physical capacity before you decide how the space will look. Office space planning organises desks, meeting rooms, circulation space and shared areas around headcount, working styles, collaboration needs and long-term growth. That makes the layout a response to operating requirements rather than an isolated design exercise.

Begin by answering one question: what must the workplace enable on a normal day, a busy day and a day when the team changes? The answer may involve focused individual work, scheduled meetings, informal conversations, client visits, private calls, storage, kitchen use and periods of concentrated growth. Those requirements will shape the amount and type of space you need.

A useful office design brief identifies:

• current and projected team sizes;
• the work settings different teams require;
• meeting sizes, frequency and privacy needs;
• storage, technology and wall-space requirements;
• the balance between open, enclosed and quiet areas; and
• the growth assumptions that should influence the initial layout.

Do this before choosing between open-plan, cellular, serviced or other workspace arrangements. A design direction becomes easier to compare when each option is tested against the same work patterns and capacity assumptions.

Your first decision is therefore operational: define the activities and people the office must support, then translate them into space requirements. Record what is known, what is an assumption and what still needs a project-specific answer. The resulting brief gives you a basis for discussing layout, fit-out scope and future change without treating a visual preference as a complete specification.

Build the brief around work patterns and change

Your office brief should describe how work happens and how that pattern may change. Current and projected headcount matter, but they are only the starting point. You also need to record peak attendance, private and open settings, meeting-room sizes and frequency, storage, wall space, technology and future growth before committing to a layout.

Use a short planning record for each team or work pattern:

• People: state the current team size, expected hires and any groups that may use the space at different times.
• Activities: distinguish focused work, shared project work, calls, client meetings, workshops and informal conversations.
• Settings: identify where each activity can take place, such as an individual workstation, enclosed room, open collaboration area or quiet setting.
• Privacy: record work that needs acoustic, visual or conversational privacy without assuming that every requirement needs a permanent room.
• Technology: list the equipment, connectivity and meeting technology that the space must accommodate.
• Storage: separate personal, team, equipment and archive storage, then note which items need immediate access.
• Change: describe hiring expectations, team reorganisation, changing attendance and any lease or workspace decision that could affect the planning period.

This record helps you distinguish a genuine spatial requirement from a habit that could be handled in another setting. It also gives a design provider information that can be tested against a floor plan rather than leaving the provider to infer how your company operates.

Headcount should be recorded in two forms: the people employed or expected to join, and the people likely to use the office at the same time. Add the busiest expected attendance pattern separately from the average. Note whether particular teams, visitors or events create a different demand for meeting rooms, breakout space, reception or kitchen use.

Growth deserves the same precision. Rather than writing that the business is growing, record the expected direction and the space consequence. For example, you might need more individual work areas, additional project space, larger meeting rooms or more storage. If the timing or scale is uncertain, mark it as an assumption to test rather than converting it into a fixed layout requirement.

The practical output is a requirements register. Keep each requirement tied to a work activity, a group of people, a frequency or a change assumption. That register will later help you choose a planning direction and challenge any layout that looks attractive but does not support the way your team works.

Size the workplace from occupancy, not headcount alone

Hybrid office sizing begins with peak occupancy rather than total headcount. Total headcount tells you how many people belong to the business; peak occupancy tells you how many people need the workplace at the same time. Your brief should record both figures and explain how the peak was established.

Start with attendance information that reflects your own operating pattern. Record the number of people expected on each regular office day, identify the busiest recurring day and separate ordinary attendance from occasional events. If attendance varies by team, model the teams rather than applying one rate across the whole company. The result should be a planning population for desks, rooms and shared areas, not a simple percentage copied from another organisation.

The source material reports that, in serviced offices, 60 to 70 desks per 100 employees is a working norm. That is a reference point for a serviced-office context, not a universal desk ratio for every London workplace. Your requirement may differ because of attendance patterns, assigned desks, shared desks, meeting demand, private work or the terms of the space you are considering.

Use the ratio as a question: what would 60 to 70 desks per 100 employees mean for your busiest regular day, and what would happen when more people attend? Do not use it as the answer without testing the underlying pattern.

Legal space thresholds and operational capacity are separate planning questions. Treat that as a compliance threshold, not as the amount of space that automatically provides the desks, rooms, circulation, storage and support functions your business needs.

Write the occupancy basis in plain language in your brief. For example: total headcount, expected attendance by day, busiest recurring attendance, meeting demand and growth assumption. A provider can then show how those inputs affect the proposed layout and where the assumptions still need project-specific checking.

Use benchmarks as tests, not specifications

UK space benchmarks can test whether your early assumptions are plausible, but they should not replace the brief. The BCO’s 2023 Guide to Specification sets 10 sq m per person as the UK benchmark for general workspace. The same guide reports that most businesses land between 10 and 14 sq m per person when meeting rooms, breakout space and support areas are included in the total.

Those figures describe different planning levels from a desk count. A calculation based only on workstations will not answer whether the office has enough meeting, breakout, storage, kitchen, reception, WC or circulation provision. Conversely, a total-area figure does not explain whether the mix suits your work patterns.

Use the figures to run three tests:

1. Capacity test: does the proposed total area look consistent with the people expected to use the office and the functions it must contain?
2. Mix test: does the area include enough room for individual work, meetings, collaboration and support functions rather than assigning everything to desks?
3. Assumption test: which parts of the calculation depend on attendance, growth, shared facilities or a particular workspace format?

If the answer to any test is unclear, keep the figure as an estimate or planning input. Do not present it as a confirmed specification.

The distinction between a benchmark and a threshold matters. Keep the two figures in separate lines in your brief. Label one as an indicative planning benchmark and the other as a compliance matter requiring project-specific treatment. That wording prevents a low threshold from becoming the target for desks, rooms or support space, and it keeps the design conversation focused on how the workplace will actually operate.

Model hybrid attendance carefully

Hybrid attendance should be modelled from actual use patterns and peak days, not from total headcount or an average figure alone. The source material reports BCO’s 2025 utilisation research as putting average UK office attendance at 66%. That figure describes an average, so it does not establish the busiest day for your team.

The same material gives an illustration in which a 30-person team needs to accommodate roughly 20 people on its busiest day when planning from the reported 66% average attendance. Use that illustration to see why an attendance assumption changes the desk requirement, not as a direct calculation of your own peak. Your busiest day may be higher or lower, and the difference may come from team schedules, client activity, project work or a regular company event.

Build your attendance record around questions such as:

• How many people attend on each regular office day?
• Which day has the highest recurring attendance?
• Do particular teams attend together for collaboration?
• How often do visitors, workshops or all-hands meetings increase demand?
• Which settings are needed when attendance is high: desks, small rooms, large rooms, breakout areas or private spaces?
• Which facilities remain necessary even when fewer people attend?

Record a range where the pattern is uncertain. A range makes the uncertainty visible and gives you something to test with a layout rather than concealing it inside a single ratio.

Hybrid office design supports in-office and at-home working through bookable desks and flexible work zones rather than rigid fixed ways of working. That does not mean every desk should be shared or every room should be open to everyone. It means the brief should distinguish assigned space from shared space and state how people will use each setting.

The AWA 2024 Hybrid Working Index found that UK offices provided 56 desks per 100 employees, down from 79 in 2022. The figure is a market reference, not an instruction for your business. Compare it with your own attendance record, then test whether the proposed desk count works on the busiest recurring day. If it does not, change the planning assumption or the mix of settings before you move to design detail.

Your brief should therefore state the attendance method, the busiest expected use, the shared-desk assumption and the exceptions that need dedicated provision. That information is more useful than describing the workplace simply as hybrid.

Choose between fixed-desk, hybrid-ready and growth-buffered directions

Your design direction should follow the relationship between attendance certainty, expected growth and the flexibility of the workspace arrangement. Three useful directions are fixed-desk, hybrid-ready and growth-buffered. They are planning choices, not labels that settle the brief by themselves.

The hybrid-ready direction is supported by the principle of bookable desks and flexible work zones. The growth-buffered direction should be tied to an explicit assumption rather than a vague expectation that the business will grow.

Use the lease or commitment period as one input to the growth discussion. The cited source recommends adding 10% for leases under two years, using 15 to 20% for two- to three-year terms, and planning for 25% more staff than current headcount for three- to five-year commitments. These are planning recommendations, not automatic allowances. Test them against hiring confidence, attendance, available flexibility and the consequences of paying for unused capacity.

Choose the fixed-desk direction when your attendance record shows a sustained need for assigned workstations and your change assumptions are limited. Then ask for a layout that makes the desk requirement explicit.

Choose the hybrid-ready direction when attendance varies and shared settings can support the way teams work. Then document the busiest recurring day and the rules or technology needed to use shared desks.

Choose the growth-buffered direction when expansion is a stated planning assumption and the additional capacity has a clear purpose. Then state the buffer, the period it covers and the point at which you would reassess it.

If none of these assumptions is reliable, keep the brief flexible and ask for more than one layout scenario rather than committing to a single capacity figure.

Assign space to individual work and collaboration

Individual work and collaboration need to be planned as related settings. Open desks can support shared activity, but open layouts can also create noise. A mix of open desks and enclosed rooms gives you a way to balance collaboration with the need for more contained work.

Describe each setting by the activity it supports rather than by its appearance. Your space schedule might include:

• individual work areas for focused or routine work;
• enclosed rooms for private work, calls or conversations;
• open collaboration areas for project activity and informal interaction;
• quiet settings for work that should not take place in a busy shared area; and
• breakout areas for short discussions that do not justify booking a meeting room.

Informal breakout areas allow quick discussions without booking meeting rooms. Their value in the brief is therefore functional: they provide another place for short exchanges and help you separate those exchanges from work that needs a formal room. State how often you expect that activity and where it could take place without disrupting individual work.

The 70-20-10 rule offers one way to test a small-office allocation: 70% for primary workspace, 20% for collaboration and meeting spaces, and 10% for support functions such as storage, kitchen areas and quiet zones. Treat the rule as an indicative planning framework, not as a specification for every office. Your headcount, attendance, room schedule, building constraints and work patterns may produce a different balance.

Apply the framework by asking what each portion would contain. If the primary-workspace allocation leaves no room for private settings, check whether the desk assumption is too high. If collaboration consumes most of the available area, check the frequency and size of the activities behind that demand. If support space is treated as leftover space, list the functions that have been omitted.

Finish this part of the brief with a space schedule. Name the setting, its intended use, the expected frequency, the number of people it should accommodate and whether the setting must be fixed, shared or adaptable. That schedule gives a design provider something concrete to arrange and test.

Specify meeting rooms by use and frequency

Meeting-room planning should begin with meeting behaviour, not with a preferred room count. Review typical meeting sizes and consider a mix of small rooms, mid-sized spaces and one larger room where the pattern justifies it. The right mix depends on how often meetings occur, how many people attend, how private they are and whether they need particular technology.

Create a meeting schedule that records:

• the usual number of participants;
• the busiest likely meeting size;
• how often each type of meeting occurs;
• whether the discussion needs visual, acoustic or conversational privacy;
• whether people join remotely or need presentation technology; and
• whether the meeting can take place in a breakout area instead.

This approach prevents a large room from absorbing space that is used mainly by two or three people. It also prevents every small discussion from competing for the same limited room. The schedule should show where demand comes from and which activities can share a setting.

Test the room schedule against peak attendance rather than average attendance alone. A room may be available on a quiet day but difficult to book when a team meets in the office together. Note the days or periods when room demand rises, then ask whether the proposed mix has enough flexibility for that pattern.

Include storage and wall space in the same review. Screens, whiteboards, equipment and shelving compete for usable wall space, so record them before the layout is finalised. If a room needs technology, specify the use it must support rather than assuming that every room requires the same equipment.

End with a decision for each room type: fixed room, shared room, flexible setting or unmet requirement to discuss. This keeps the brief honest about what the layout can support and what still needs a project-specific answer.

Include the support spaces that make the layout workable

Support spaces should be listed as part of the workplace, not added after the desk plan. Your brief should show how those functions relate to the work areas and to each other.

Write a short requirement for each support function:

• Kitchen: state the expected use, equipment needs, location preferences and whether the space also functions as an informal meeting or social area.
• Reception and arrival: state whether visitors are expected, how they arrive, where they wait and whether a reception or client area is required. A visitor-facing reception should be treated as an operational space as well as an arrival point.
• WCs: record the expected provision as a project requirement to be assessed alongside occupancy, building conditions and the proposed layout.
• Storage: separate everyday supplies, equipment, personal items and records, then state what needs immediate access.
• Circulation: identify routes that must remain clear between work areas, rooms, support spaces and entrances.
• Technology and services: list the equipment, connectivity and service access that the layout must accommodate.

The purpose of this list is not to prescribe a finished arrangement. It is to prevent a desk count from using all the available area before the functions that make the office usable have been considered.

Use the support-space list to challenge the phrase enough room. Enough for what? If the answer includes kitchen use, visitor arrival, WCs, storage, equipment, informal conversations and circulation, each item needs a place in the requirements register. If a function is shared with a building or another workplace area, record that arrangement instead of silently removing it from the calculation.

The space schedule should also state which support functions are fixed and which could change. A kitchen, WC arrangement or service route may require different checks from movable furniture or a flexible collaboration setting. Keeping those categories separate will make later discussions about fit-out, building constraints and cost categories more precise.

Separate the design idea from the fit-out reality

A preferred layout is only a design idea until it has been tested against the space and the work required to create it. The existing space may determine which parts are practical, which need alteration and which need further investigation.

Ask for a review of:

• the current condition of the space;
• services capacity and access;
• landlord constraints and permissions;
• the position of existing facilities and fixed elements;
• the proposed partitions, rooms and circulation routes; and
• applicable compliance issues that affect the design or construction decisions.

Review the space condition, services capacity, landlord constraints and applicable compliance issues before finalising design and construction decisions. This sequence matters because a preferred arrangement may change when the building, services or permissions are examined.

Keep your design preference and your feasibility questions in separate parts of the brief. The preference might say that you want a hybrid-ready workplace with enclosed rooms and flexible collaboration areas. The feasibility section should ask what the existing space can support, which changes require approval and which elements affect the construction scope.

Ask the design or fit-out provider to mark assumptions clearly. A plan that depends on unconfirmed services capacity, landlord permission or a particular building condition should remain provisional until that point is addressed. This gives you a more useful basis for comparing options than a polished layout without its delivery conditions.

Ask for a complete fit-out plan

A complete fit-out plan should show scope, cost categories and programme stages without presenting an unsupported total as a commitment. The cost plan should allow for construction, furniture, professional fees, technology, statutory approvals, contingencies and VAT where applicable. Ask for those lines separately so you can see what is included, what is provisional and what remains to be decided.

Use these questions to structure the cost discussion:

• Which construction and partitioning works are included?
• Which furniture, lighting, acoustic and finish items are included?
• Are technology and connectivity allowances shown separately?
• Are professional fees, statutory approvals, contingencies and VAT listed?
• Which building, landlord or specialist costs sit outside the initial plan?
• Which assumptions would change the figure if the layout or scope changes?

Do not turn an early allowance into a confirmed cost. Keep estimates labelled as indicative until the scope, building information and project decisions support a more specific figure.

The programme should map design, approvals, procurement, construction, move-in and handover. Ask for each stage to be shown in order, with the decisions or information needed before the next stage can begin. Do not rely on a single move-in date without understanding the work that leads to it.

A practical programme checklist includes:

1. design development and layout confirmation;
2. building, landlord and approval checks;
3. procurement of furniture, technology and construction items;
4. construction and installation;
5. move preparation and access arrangements; and
6. handover, outstanding items and occupation planning.

The provider should also identify dependencies and assumptions. If the programme depends on an approval, a building survey, a procurement decision or information from your team, record that dependency beside the relevant stage. This makes the discussion about sequence and responsibility rather than an unqualified promise about timing.

Compare fixed-desk, hybrid-ready and growth-buffered directions

Use the brief as a comparison sheet: record the team’s work patterns, peak attendance and growth assumption, then test each design direction against those inputs. Keep the central requirement visible: the office must support the work, the expected attendance and the changes you have identified.

Use this structure:

• Business and location: describe the London requirement, the current workspace position and any location constraints already known.
• People and attendance: state current headcount, projected headcount, regular attendance by day, busiest expected attendance and the method used to establish it.
• Work patterns: list focused work, collaboration, calls, client activity, workshops and any other recurring activities.
• Design direction: identify whether the starting preference is fixed-desk, hybrid-ready, growth-buffered or still open, and explain the assumption behind it.
• Individual work: state the desk approach, private settings, quiet requirements and any assigned work areas.
• Meetings and collaboration: provide the room schedule, typical group sizes, frequency, privacy needs, technology and breakout requirements.
• Support spaces: include kitchen, reception, WCs, storage, circulation, technology and service requirements.
• Growth and flexibility: state the hiring assumption, the period it covers, the proposed buffer and the point at which the assumption should be reassessed.
• Building and delivery questions: list space condition, services capacity, landlord constraints, applicable compliance issues, cost categories and programme stages.

This structure turns a broad design request into a set of questions that can be answered, tested or marked as provisional.

Before you send the brief, check that every material assumption has a label. Mark each item as confirmed, estimated, preferred or to be assessed. Confirm that the headcount and attendance figures are separate, the room schedule reflects meeting frequency, and the support spaces have not been treated as leftover area.

The final page should also state what you want from the next discussion. You might request an initial layout comparison, a review of the existing space, a fit-out scope, an indicative cost structure, a programme outline or a management discussion. Keep those requests tied to the information in the brief.

A concise brief does not need to settle every design question. It needs to make the known requirements, open decisions and project conditions clear enough for a London office design, fit-out or management conversation to begin on the right basis.

Verify the brief with the right office partner

A practical London office brief connects occupancy, growth, work settings, meeting demand and support functions before you commit to a design direction. Use the brief to compare fixed-desk, hybrid-ready and growth-buffered approaches, then keep benchmarks and cost allowances labelled as planning inputs rather than confirmed specifications.

At Flux HQ, we provide office design, fitout and management services. We support office design and build in London, delivering customised office fitouts and ongoing management. Take the requirements to a qualified office design or fit-out professional for project-specific decisions about suitability, building conditions and applicable compliance matters.

What should a provider check before confirming the design direction?

What should an office design brief include?

Include current and projected headcount, attendance by day, busiest expected occupancy, work patterns, desk and privacy needs, meeting sizes and frequency, breakout areas, kitchen, reception, WCs, storage, technology, growth assumptions and known building constraints. Mark each point as confirmed, estimated, preferred or requiring assessment.

How should a hybrid office brief describe desk requirements?

Separate total headcount from expected attendance and identify the busiest recurring day. State which desks are assigned or shared, how bookable workstations would operate, and which private, meeting or collaboration settings are needed when attendance is high. Do not use an average attendance figure as a substitute for your own peak-occupancy assumption.

What should I ask an office fit-out provider before approving a layout?

Ask the provider to test the layout against the space condition, services capacity, landlord constraints, applicable compliance matters, circulation, technology and support functions. Request a clear scope covering construction, furniture, professional fees, technology, approvals, contingencies and VAT where applicable, with assumptions and exclusions shown separately.

How do I turn office requirements into a concise London workspace brief?

Organise the document into business and location requirements, people and attendance, work patterns, design direction, individual work areas, meeting and collaboration spaces, support functions, growth assumptions, and delivery questions. End by listing the decisions still open and the project-specific checks needed before design, fit-out or management arrangements are finalised.