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Office renovation: stages, low-voltage systems and fire safety

Updated 26 October 2026 · based on: the Doma app renovation route for an office (stages “Landlord and building management approvals”, “Low-voltage systems”, “Fire safety”, “Fire safety testing”, “Office move and launch”, office changes to the “Planning”, “Demolition” and “Final installation” stages; the office stages are a draft being checked by a builder), as of 26 October 2026

An office renovation differs from an apartment one in three ways. Before any work starts, it is approved with the landlord and the business centre's building management. It has its own systems - the workstation cable network and the fire alarm - and they are run before the ceiling goes up. And it ends not with moving in, but with fire safety testing and the staff move. That is how the “Office” route is built in the Doma app.

The order of stages

This is how the “Office” route is laid out in the app:

  1. Landlord and building management approvals.
  2. Planning.
  3. Demolition and partitions - if needed.
  4. Low-voltage systems.
  5. Fire safety.
  6. Plumbing, electrical, air conditioning, ventilation.
  7. Rough finishing, floor preparation and screed, waterproofing.
  8. Ceilings, tiling, wall finishing.
  9. Stretch or suspended ceiling - if planned.
  10. Flooring and final installation.
  11. Fire safety testing.
  12. Furniture and appliances, final acceptance.
  13. Office move and launch.

The office-specific stages are a draft for now: a builder is checking them, and the items may change.

Approvals: before any work

The first stage answers the question of whether you can start at all. Its items:

  • The lease. Make sure it allows renovation, and record how permanent improvements are accounted for. Without this, your renovation investment stays with the landlord when you move out.
  • The business centre's rules. Ask building management for the rules: noisy work hours, passes, the freight elevator, waste removal. In business centres, noisy work is often allowed only at night and on weekends - that changes the schedule straight away.
  • Accepting the space with a certificate. Inspect the space with the landlord's representative and record its condition. Photos taken at handover protect you when you have to return the space.
  • The design. The layout and engineering sections are approved with the landlord and building management, and the fire alarm and ventilation separately. According to the route's hint, this takes 2-6 weeks.
  • Power. Find out how much is allocated to the space and whether it can be raised. A server room and a staff kitchen noticeably increase consumption.
  • Contractors. Building management gets a list of contractors with their permits and insurance policies. Many business centres require contractors to be SRO members and carry liability insurance - check this before choosing a crew.
  • Passes and deliveries. Find out the freight elevator size before ordering materials.
  • The schedule. It should fit the rules and the move date, with slack: building management inspections push deadlines back.

Planning and demolition: what changes for an office

Planning an office is the same as planning an apartment, with route adjustments:

  • next to the furniture on the plan, you decide on office equipment and kitchen appliances - outlets and dedicated lines depend on them;
  • layout change requirements are checked with the landlord;
  • office furniture, glass partitions and the internet provider are ordered right away: the move is tied to the lease date. According to the route's hint, furniture takes 3-8 weeks to arrive, partitions 3-6 weeks to make, and a provider can take up to several weeks to connect.

At demolition, the first item is protecting the business centre's elevators, lobbies and corridors as building management requires: the business centre bills the tenant for damaged lobby finishes. Waste is removed according to the rules - check the time and route in advance.

Low-voltage systems

The cable network is the most expensive thing to redo later. The stage's items:

  1. Design the network: the number of ports per workstation, the rack location, the cable routes. Plan spare ports.
  2. Prepare the server room: a room or a spot for the rack with ventilation, a dedicated power line and a UPS. A rack without cooling fails in summer.
  3. Run the cables in trays and conduit before the walls and ceilings are closed, and photograph the routes: you'll need the layout whenever workstations move.
  4. Label and test the lines with a tester; ask for the test report and the cable log.
  5. Accept the stage: check the network at the workstations and get the as-built drawings. The as-built cable plan gets lost more often than any other document - keep it in the app.

Wi-Fi access points, video surveillance and access control go in later, during the final installation. Cameras that look into shared corridors are agreed with building management.

Fire safety: before the ceiling

A new layout almost always means reworking the fire alarm. That is why the “Fire safety” stage comes before the ceilings:

  • the requirements for the space's systems come from building management;
  • fire alarm and voice alarm cabling is run to suit the new partitions before the ceiling is installed;
  • if the building has sprinklers, they are moved under the new ceiling to the design - also before the suspended ceiling;
  • structures are treated with fire-retardant coating, and cable penetrations through walls are sealed; keep the certificates for fire protection materials - they get checked.

Fire alarm work is done by a company licensed by the fire authority (MChS), not by a general crew. Which systems your space needs, building management and the design will tell you.

Detectors and sounders go in during the final installation, after finishing: a detector covered in renovation dust gives false alarms. Then comes a separate “Fire safety testing” stage: evacuation plans, signs and extinguishers, and testing the alarm together with the building management engineer. Without a test certificate, the space won't be cleared for use.

Office move and launch

The last stage replaces moving in:

  • a move plan: the date, the order in which departments move, and who is responsible;
  • transport and a freight elevator time agreed with the business centre;
  • internet and phones - connected and checked before the move;
  • a data backup before the servers are moved;
  • cleaning after construction, ventilation included, before the furniture goes in;
  • a walk-through of every workstation: outlets, network, lighting, furniture;
  • completion certificates signed with building management.

Which documents to keep

The route gives a list of papers you'll need for inspections, rearrangements and returning the space:

  • the space acceptance certificate and photos of its condition;
  • the approved design;
  • the test report and cable log, the as-built drawings;
  • certificates for fire protection materials;
  • the fire safety test certificate;
  • completion certificates.

In the app, they go on the “Documents” tab, and photos of the routes go with the stage items. What else to keep after a renovation is in Which documents to keep after a renovation, and for how long.

Checklist before work starts

  • The lease allows renovation, and permanent improvements are described.
  • You have the business centre's rules, and the noisy hours are in the schedule.
  • The space is accepted with a certificate, and photos are taken.
  • The design is approved, with the alarm and ventilation approved separately.
  • The power allocation is confirmed.
  • The contractors are approved by building management.
  • Furniture, partitions and the provider are ordered.

After that, the work inside goes as in an apartment - see Renovation stages in order. How to choose who does the work is in How to choose a renovation crew and vet a contractor. When you create a property in the app, choose the “Office” type - the route will be built from these stages.

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