Scaffolding for Home Improvements — What It Involves, How Long It Takes, and What It Costs

**Independent tied scaffold (tube-and-fitting or system scaffold)**: The most common scaffolding type for residential work. Consists of upright standards, horizontal ledgers and transoms, cross bracing, and a working platform (decking boards). The scaffold stands independently on the ground and is tied back to the building through the windows and structure at regular intervals.

Used for: loft conversions, dormer construction, re-roofing, chimney repairs, full house rendering or painting. The scaffold provides a platform at the working level and edge protection for operatives.

**Bridging / gantry scaffold (over a public pavement)**: Where the scaffold base is on a public pavement or footway, a bridging scaffold is erected to maintain safe pedestrian access below. Consists of a scaffold frame overhead with the working platform above and a protected walkway at pedestrian level below.

**Hop-up and mobile access towers**: For works at lower levels (one to two metres above ground), PASMA-certified mobile access towers are used instead of full scaffolding. These are freestanding aluminium towers on wheels, suitable for gutters, soffits, and low-level brickwork. Not suitable for loft or roof-level work.

**Roof edge protection**: For loft conversions where only limited access to the roof is required (e.g., installing Velux rooflights), a roof edge protection system — a system of guardrails along the roof perimeter — may be used instead of full scaffolding if the site manager is satisfied it is safe to do so.

In London, scaffolding erected on or over the public highway (road, footway, or public land) requires a licence from the highway authority:

**London Borough highways**: Most roads in London are the responsibility of the London Borough in which they fall. A scaffold licence (also called a scaffold permit or hoarding licence) is required and is applied for by the scaffolding company before erection. Typical fee: £200–£600 for 4–8 weeks.

**TfL roads (red routes)**: Roads managed by Transport for London (A-roads shown as red routes on maps) require a separate TfL scaffold licence, which is more complex and expensive. Works on or adjacent to red routes may require a lane closure plan and are subject to TfL's review process.

**Timing**: scaffold licence applications should be submitted at least 2–4 weeks before scaffolding is needed. On busy streets or for more complex arrangements, licence approval can take 4–6 weeks. This timeline should be factored into the project programme.

**Skip permits**: Where a skip is required on the public highway (as is common in London where driveways are rare), a separate skip permit is required from the highway authority. Typical fee: £60–£150/week. Skips on private land do not require a permit.

**Scaffolding costs (London, 2025)**:

Scaffolding costs are quoted per 'lift' (the number of levels of working platform) and per week on hire.

**Velux loft conversion (roof edge protection + one lift)**: Erection: £800–£2,000. Hire: £150–£300/week. Typical hire duration: 4–6 weeks. Total: £1,400–£3,800.

**Rear dormer loft conversion (full rear scaffold)**: Erection: £1,500–£3,500. Hire: £200–£400/week. Typical hire duration: 6–10 weeks. Total: £2,700–£7,500.

**Hip-to-gable or full loft conversion (full scaffold to three sides)**: Erection: £2,500–£5,000. Hire: £300–£600/week. Typical hire duration: 8–12 weeks. Total: £4,900–£12,200.

**Rear extension with scaffold for render/cladding**: Erection: £1,000–£2,500. Hire: £150–£300/week. Typical hire duration: 3–5 weeks. Total: £1,450–£4,000.

**Full house re-rendering (scaffold to all elevations)**: Erection: £3,500–£7,000. Hire: £400–£800/week. Typical hire duration: 8–12 weeks. Total: £6,700–£16,600.

• **Programme timing for scaffolding**:
• •Scaffolding is typically erected before works start (day 1 or 2 of the project)
• •It remains in place throughout the works (structure, waterproofing, and external finish)
• •It is struck (removed) once all external works are complete
• •The scaffold hire period is typically included within the contractor's programme — any delays to the programme extend the hire and increase cost

**Neighbour access and party wall implications**: Where scaffolding needs to be placed on or over the neighbour's property (common in terraced London houses where the dormer is being built close to or on the boundary), the neighbour's consent is required. This is typically documented as part of the Party Wall process.