Commercial Sector

Workplaces
That Perform

Office Fit-Out | Cat A & Cat B | Refurbishment | Occupied Works

Commercial office construction operates within occupied buildings, compressed programmes, and demanding quality expectations where every detail is visible. Matthews & Roberts provides the project management, CDM advisory, and contract administration that delivers workplaces safely, on time, and to the standards the market expects.

Building Types

Select your commercial environment

Each commercial building type presents distinct delivery challenges and CDM considerations.

Multi-storey commercial office towers and corporate headquarters — from new-build shell and core to comprehensive refurbishment of existing tower stock. These projects demand complex logistics in congested city-centre locations, vertical transportation planning, and coordination with base building systems serving multiple tenants.

Typical Scope

Shell and core construction or major refurbishment
Full M&E upgrade including risers and plantrooms
Facade replacement or overcladding
Lobby and common area transformation
Vertical transportation (lift replacement/modernisation)
Roof plant and cooling infrastructure

Delivery Challenges

City-centre logistics and constrained site access
Multi-tenant coordination during occupied refurbishment
Vertical transportation during lift modernisation
Base building M&E serving multiple tenants simultaneously
Planning and listed building constraints on tower facades
Fire strategy compliance for tall buildings
Fit-Out Stages

Commercial fit-out navigator

Commercial office construction follows a structured progression from shell and core through to occupation. Select a stage to understand scope, responsibility, and standards.

Shell & Core

12-36 months (new build)Developer / Landlord

The base building structure, envelope, and primary services delivered by the developer or landlord. Shell and core provides the structural frame, external facade, main plant, risers, cores, lobbies, and common areas — everything up to the point where a tenant can begin their own fit-out.

Scope of Works

Structural frame and floor slabs
External facade and roof
Core construction (stairs, lifts, toilets, risers)
Main plant (boilers, chillers, main switchgear)
Lobby and common area base finish
Incoming utility connections

Applicable Standards

Building Regulations Parts A-S
BCO Guide to Specification (floor loading, slab-to-slab heights)
BREEAM Shell & Core assessment
Approved Document B fire safety
Section 20 consultation (if leasehold)
Risk Management

Occupied building risk register

Construction within occupied commercial buildings carries specific risks that require proactive management. Select a category to review risks and mitigations.

Excessive noise during working hours

High

Impact

Productivity loss, complaints, tenant claims

Mitigation

Noisy works outside core hours (before 08:00 / after 18:00), acoustic hoarding, vibration monitoring

Dust migration into occupied workspace

High

Impact

Health complaints, equipment damage, business interruption

Mitigation

Negative air pressure behind hoarding, dust suppression, HEPA filtration, daily air monitoring

Disruption to welfare facilities (toilets, kitchens)

Medium

Impact

HSE breach, staff welfare, lease obligation

Mitigation

Phased works maintaining minimum facilities, temporary provision where required

Loss of natural light and views

Medium

Impact

Staff wellbeing, DSE compliance

Mitigation

Phased scaffolding/hoarding, transparent hoarding where feasible, communication of programme

What We Deliver

Commercial delivery services

Project Management

Client-side delivery for office fit-outs, refurbishments, and base building works — from single-floor Cat B to multi-storey tower refurbishment.

Fit-out deliveryPhased constructionOccupation planningHandover management

CDM Advisory

CDM 2015 compliance for occupied commercial buildings including asbestos management, fire strategy maintenance, and construction segregation.

Pre-construction infoH&S FileOccupied building plansPD services

Contract Administration

JCT and NEC contract administration for commercial fit-out and refurbishment including interim valuations, variations, and defects management.

Payment certificationVariation managementPC certificationFinal accounts

Quantity Surveying

Cost management for commercial office projects including benchmarking against BCO specification, value engineering, and dilapidations assessment.

Cost planningBCO benchmarkingVE workshopsFinal accounts

Quality Assurance

Quality management ensuring fit-outs meet BCO specification, landlord requirements, BREEAM targets, and Building Regulations compliance.

BCO complianceSnagging managementBREEAM coordinationHandover QA

Health & Safety

Construction-phase H&S management within occupied commercial buildings including out-of-hours coordination, fire strategy, and multi-contractor management.

Safety managementFire strategy coord.Asbestos oversightSafety auditing
Client Success

Commercial projects delivered

Matthews & Roberts managed our 45,000 sq ft Cat B fit-out across three floors of a Grade A office tower in Manchester. Construction took place while the floors above and below remained fully occupied. Their out-of-hours coordination and tenant liaison delivered the project without a single formal complaint.

Head of Workplace

Professional Services Firm, Manchester

45,000 sq ft — zero complaints from adjacent tenants

Our business park refurbishment programme covered six buildings across 18 months. Matthews & Roberts phased the works around existing tenant leases, managed EPC improvements from G to B across every building, and coordinated the programme so that no more than two buildings were in construction at any time.

Asset Manager

Institutional Investor, South East

6 buildings — all improved to EPC B within programme
FAQ

Commercial office questions

Category A (Cat A) is the base fit-out that brings a shell and core floor to a marketable standard — raised floors, suspended ceilings, basic M&E distribution, fire protection, and neutral finishes. It creates a blank canvas. Category B (Cat B) is the tenant's own fit-out installed on top of Cat A — the workspace design including partitioning, meeting rooms, reception, kitchen, technology, and brand identity. Cat A is typically the landlord's responsibility; Cat B is the tenant's.

Occupied building construction requires robust management of noise, dust, fire safety, and building services. We develop occupied building management plans covering restricted working hours, acoustic hoarding, dust containment with negative air pressure, maintained fire compartmentation and escape routes, phased building services shutdowns (out of hours only), and coordinated goods lift access. Tenant communication is managed proactively throughout.

The British Council for Offices (BCO) Guide to Specification is the industry benchmark for commercial office quality. It defines standards for floor-to-ceiling heights, floor loading, power provision, cooling capacity, lighting levels, toilet provision, and common area design. We reference BCO standards throughout design review and construction to ensure commercial offices meet market expectations and lettability requirements.

Yes. We manage the dilapidations process from both landlord and tenant perspectives — initial condition survey, schedule of dilapidations review, cost assessment, negotiation support, and reinstatement works management. For tenants, early dilapidations assessment can reduce exit costs significantly. For landlords, robust documentation protects reinstatement claims. We follow the RICS Dilapidations Protocol throughout.

Office fit-out carries specific CDM risks including asbestos in existing ceiling voids and floor voids, working at height on raised access floors and from scaffolding in atria, manual handling of heavy materials through goods lifts and corridors, construction in occupied buildings with fire strategy and welfare implications, and M&E works involving live services. Our Principal Designers address all of these in pre-construction information.

The Minimum Energy Efficiency Standards (MEES) currently require a minimum EPC rating of E for commercial lettings, with proposals to increase this to C by 2027 and B by 2030. Non-compliant buildings cannot be legally let. We manage EPC improvement programmes including fabric upgrades (insulation, glazing), M&E system improvements (LED lighting, HVAC optimisation), and renewable energy installations to achieve target ratings.

Yes. We specialise in phased programme delivery across multiple floors or buildings — managing construction sequences that minimise disruption, maintain building services to occupied areas, coordinate tenant relocations and decants, and deliver each phase to a self-contained completion. Our programme management ensures each phase is independently functional while maintaining continuity across the wider programme.

We coordinate BREEAM assessments for office refurbishment and fit-out projects. Most institutional clients target BREEAM Excellent as a minimum for new fit-outs, with some targeting Outstanding. We manage the BREEAM process from design through to post-construction, ensuring evidence is captured during construction for the assessor. Key credits typically include energy performance, indoor air quality, responsible sourcing, and waste management.

Asbestos is common in commercial buildings constructed before 2000 — particularly in ceiling tiles, floor tiles, pipe lagging, fire stopping, and textured coatings. We ensure management surveys are updated and refurbishment and demolition surveys are completed before any construction work in affected areas. Where removal is required, we manage licensed contractor procurement, enclosure construction, air monitoring, and four-stage clearance.

We bridge the gap between workplace strategy and construction delivery. Once workplace consultants have defined the brief — working styles, space ratios, technology requirements, and brand expression — we manage the translation of that brief into delivered workspace through design coordination, contractor procurement, construction management, and occupation planning including furniture installation and technology commissioning.

Get Started

Delivering a workplace?

From single-floor Cat B fit-outs to multi-building refurbishment programmes, we provide the project management and CDM advisory that commercial office construction demands.

Cat A and Cat B fit-out delivery to BCO standards
Occupied building construction management
CDM Principal Designer for commercial refurbishment
Multi-floor and multi-building programme management
BREEAM and EPC improvement coordination
Projects from 5,000 sq ft fit-out to 500,000 sq ft refurbishment

Get in Touch

We will aim to respond within 24hrs.

Client Portal

The Client Portal provides secure access to project documents, progress updates, and direct communication with your Matthews & Roberts team.

Request access: info@matthewsroberts.com

Portal access is provided to approved clients. Contact us if you need support.

Existing client?

Access your project portal to view documents and track progress.

New enquiry?

Tell us about your project and we'll respond within 24 hours.