Renovation Project Management: How to Stay in Control of Your Building Project

**The contractor's role vs. the client's role**:

A common misconception is that 'project management' is entirely the contractor's responsibility. In reality:

• *The contractor is responsible for*:
• •Site management, supervision, and health and safety
• •Sequencing and programming the trades and sub-contractors
• •Quality of workmanship and materials they supply
• •Compliance with the Building Regulations
• •Communication about progress, issues, and variations

• *The client is responsible for*:
• •Making decisions promptly when decisions are required (tiles, kitchen, ironmongery, floor finish — see below)
• •Supplying materials that are the client's responsibility (per RCB's standard terms, all second-fix materials are client-supplied) on time and in the right quantity
• •Paying stage payments on time when milestones are reached
• •Communicating quality or scope concerns promptly in writing
• •Accessing the site with sufficient frequency to observe progress and catch issues early

When projects go wrong, client-side failures are nearly as common as contractor-side failures — and far less commonly acknowledged.

**The decision timeline — what you must decide, and when**:

The most common cause of programme delay in domestic refurbishments is late client decisions on materials. The contractor needs specific decisions by specific dates — earlier than most clients expect.

| Item | When contractor needs the decision | Lead time reason | |---|---|---| | Kitchen units | 6–10 weeks before kitchen fit-out stage | Order, delivery, and checking lead time | | Worktops (stone/quartz) | 2 weeks after units are fitted (templating) | Cut to measure: 2–3 weeks from template | | Tiles (floor and wall) | 4–6 weeks before tiling stage | Delivery + checking (especially imported tiles) | | Sanitaryware (bath, toilet, basin, shower valve) | 4–6 weeks before plumbing second fix | Delivery; some items made to order | | Flooring (LVT, hardwood, carpet) | 4 weeks before flooring stage | Delivery + acclimatisation (hardwood: 1–2 weeks) | | Ironmongery (door handles, hinges) | 4 weeks before second-fix carpentry | Delivery; some items made to order | | Structural steel specification | At SE appointment — before work starts | Fabrication + delivery: 4–8 weeks | | Windows and doors | At frame measurement — typically week 2–3 | Fabrication + delivery: 6–12 weeks | | Appliances | 4 weeks before kitchen installation | Delivery; some items ex-stock, others 6+ weeks |

A construction project that is waiting for client material decisions is a project that is standing still — at the homeowner's cost in time and the contractor's cost in programme disruption.

**Site visits — how often and what to look for**:

The single most effective client project management activity is regular site visits. Minimum recommended: once per week during active construction.

• What to look for on a site visit:
• •Is the work progressing as expected against the programme?
• •Is the site clean, organised, and safely managed?
• •Are the materials stored correctly (not left in rainwater, not blocking access)?
• •Are all workers on site appropriately supervised?
• •Are there any visible defects (cracked blockwork, inconsistent bedding joints, poor junction between new and existing, inadequate insulation coverage) that should be raised before they are covered up?

Raising a quality concern on a site visit before the work is plastered or tiled costs nothing to resolve. Raising the same concern after the finishes are complete may require demolition and reinstatement.

**The golden rule: put it in writing**:

All significant communications with a contractor during a project should be in writing — email is preferred over WhatsApp for formal matters because it provides a permanent, searchable record. Verbal instructions ('tell them on site to move the socket') are the most common source of miscommunication and disputed variations.

• What must be in writing:
• •Any variation to the scope (additional work, changed specification, changed position)
• •Any quality concern or defect notification
• •Any instruction to stop work
• •Any notification of a stage payment being withheld and the reason
• •Any extension of time request from the contractor
• •Any change to the programme or start/completion dates

**How to raise a quality concern without creating unnecessary conflict**:

Quality concerns on a live project are best raised: promptly (as soon as observed), specifically (citing the relevant drawing, specification, or building regulation), and constructively (asking the contractor to attend and inspect rather than making accusatory statements).

Example: 'Hi [contractor], I visited site today and I noticed the party wall insulation between the new floor joists and the party wall does not appear to be continuous — there appear to be gaps at the joist ends. I'd like us to look at this together before the plasterboarding goes over. Can we arrange a walk-around this week?'

This approach: is factual (describes what was observed); references the issue clearly; does not escalate prematurely; and requests a prompt practical response.

**Variation management**:

• Variations (changes to the agreed scope) are the primary source of cost overruns in domestic construction. The client's role in variation management:
• •Do not instruct additional works verbally on site — always confirm in writing
• •Before instructing a variation, ask the contractor to provide a written price for the additional works before they are carried out
• •Accept or reject the variation price in writing before work starts
• •Keep a variation log — a simple spreadsheet noting each variation, its agreed price, and its impact on the total contract value

A contractor who carries out additional works without a written instruction from the client has a weaker claim to payment for those works. A client who verbally instructs additional works then disputes the cost is in a similarly weak position. Written variation instructions protect both parties.

**What to do when problems arise**:

*Contractor is behind programme*: 1. Raise in writing, citing the current programme and the estimated completion date 2. Ask the contractor for a revised programme showing how they intend to recover the delay 3. If delay is contractor-caused (not weather, ground conditions, client-caused change, or other neutral risk), the homeowner is not obliged to pay for contractor costs associated with the delay; the contract may give the homeowner rights to recover losses caused by delay

*Quality is below standard*: 1. Document the defect with photographs and a written description 2. Notify the contractor in writing, referencing the relevant specification or building regulation requirement 3. Allow the contractor a reasonable opportunity to remedy (under most standard forms, the contractor has a 'right to remedy' before the homeowner can engage others at the contractor's cost) 4. If the contractor fails to remedy within a reasonable period, seek a professional assessment and take legal advice

*Contractor makes additional payment demands not agreed in advance*: 1. Request a written breakdown of the claimed additional works and the basis for the claim 2. Check against your variation log — was this work agreed in writing? 3. Do not make payment for additional works not supported by a written variation instruction 4. If genuinely disputed, the adjudication route provides a 28-day binding decision

**When professional project management is worthwhile**:

For most standard domestic extensions and refurbishments, a hands-on homeowner who follows the approach described above can manage the project without appointing a separate professional project manager. However, professional project management or contract administration is strongly recommended in the following scenarios:

*Large or complex projects* (£150,000+): Projects at this scale involve significant financial exposure and multiple sub-contractor packages that benefit from professional coordination and independent certification of stage payments.

*Projects where the homeowner is not based locally or cannot regularly visit site*: Remote project management by a homeowner who can only visit every 2–3 weeks significantly reduces quality oversight. A professional site representative provides the regular eyes-on-site that is needed.

*Difficult contractor relationships or late-stage appointments*: Where the homeowner has lost confidence in the contractor mid-project, an experienced contract administrator can help manage communications, assess what has been done, and structure the exit if necessary.

*Projects with a formal JCT contract*: The JCT Minor Works Contract (MW) requires a 'contract administrator' — typically the architect — to certify milestones, issue instructions, and value variations. Without a contract administrator, the JCT MW contract cannot function as intended.

**What a professional contract administrator or project manager does**:

• •Reviews contractor progress against programme
• •Certifies stage payment milestones (issues Interim Certificates confirming payment is due)
• •Issues formal Architect's Instructions for scope changes
• •Values and assesses variation claims
• •Inspects works for quality compliance against specification
• •Manages the Building Control inspection process
• •Issues the Certificate of Practical Completion (triggering the DLP and retention release)
• •Issues the Making Good Defects Certificate at the end of the DLP (triggering final retention release)

*Fee*: A contract administrator role for a domestic project typically costs 2–5% of the construction cost. For a £100,000 project, this is £2,000–£5,000 — modest compared with the risk mitigation it provides.