Summary

Demolition pricing gets underestimated more often than almost any other trade because the visible work — knocking things down — looks simple, while the costs that actually erode margin are invisible at quote stage: what's in the waste stream, what's in the walls, and what's next door. A tradesperson pricing a £3,000 garage demolition who forgets that the roof is asbestos cement, or prices a skip at "about £400" without checking current landfill tax and local tip gate fees, can turn a profitable job into a loss-maker on a single line item.

Three distinct categories of work get lumped together under "demolition" and need pricing differently. Soft strip / internal strip-out removes non-structural fixtures, fittings, partitions and services from a building that stays standing — kitchens, bathrooms, stud walls, ceilings, floor coverings — ahead of a refurbishment or before structural demolition begins. Structural demolition takes down load-bearing elements of a building or part of a building — a single-storey extension, a garage, an internal load-bearing wall — but stops short of removing an entire structure. Full building demolition removes an entire structure to ground level (or below, if foundations are grubbed out), typically using excavator-mounted breakers, pulverisers and shears rather than hand tools.

Every one of these categories carries the same non-negotiable legal gate before work starts: the asbestos survey. This guide covers how to price labour and plant across the three categories, how to price waste disposal (the component most likely to be underquoted), what the Party Wall Act and CDM 2015 require, and what a competent demolition quote must include so the price you give is the price you get paid.

Key Facts

Quick Reference Table

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Job Scale Typical Size Labour + Plant Waste Disposal Asbestos Survey Indicative Total (ex VAT)
Internal strip-out (soft strip only, building remains standing) 60-100m² house £1,200-£2,800 £600-£1,400 £300-£500 £2,500-£5,500
Single-storey outbuilding / garage demolition 15-25m² footprint £800-£1,800 £500-£1,000 £250-£450 £2,000-£4,500
Structural demolition — single-storey extension 20-40m² footprint £1,800-£4,000 £900-£2,000 £350-£600 £4,500-£9,500
Full house demolition — semi-detached (attached to neighbour) 90-140m² footprint £8,000-£18,000 £4,500-£9,000 £600-£1,200 £18,000-£35,000
Full house demolition — detached 90-160m² footprint £6,500-£15,000 £4,000-£8,000 £500-£1,000 £14,000-£28,000

Figures assume standard access, no confirmed asbestos-containing materials requiring licensed removal, and no significant temporary works. Add 20-40% where any of those conditions don't hold — see "What Affects Price" below.

Detailed Guidance

The Asbestos Survey Comes First — Always

Before pricing anything else, establish whether an R&D survey exists or needs commissioning. Under Regulation 7 of CAR 2012, it is a legal requirement to identify asbestos-containing materials (ACMs) before any demolition or refurbishment work that could disturb the fabric of a building built or refurbished before 2000. This is not a recommendation — it is a duty on the person in control of the premises, and a competent demolition contractor should refuse to start structural work without one.

The survey affects price in two ways. First, it's a direct line-item cost (£300-£900 domestic) that must appear in the quote if one doesn't already exist. Second — and far more significant — the survey result determines whether the job is a straightforward mechanical demolition or requires licensed or non-licensed asbestos removal (NNLW) before demolition can proceed. Common pre-2000 ACMs relevant to demolition pricing: asbestos cement roof sheets and rainwater goods (garages, outbuildings — extremely common), textured coatings (Artex), asbestos insulating board (AIB) in soffits, fascias, and internal partitions, and floor tiles/adhesive. If the survey identifies licensed work, the demolition programme and price both change substantially — see asbestos removal pricing guide for removal cost ranges and pre demolition audit for how the survey fits into the wider pre-demolition audit process (structural survey, services disconnection, waste audit).

Never quote a demolition job "asbestos unknown, will confirm on site." If ACMs are disturbed without a survey and correct controls, this is a CAR 2012 breach with personal liability for whoever instructed or carried out the work — not a commercial risk, a legal one.

Pricing Methodology by Job Type

Soft strip / internal strip-out prices on labour productivity, not plant. A crew of 2-4 operatives with hand tools, a Kango/SDS breaker for the odd stud wall, and a skip on standby will strip a typical house interior — kitchen, bathroom, partitions, floor coverings, ceilings — at 50-200 m²/operative/day depending on fixture density (kitchens and bathrooms are slow; open-plan stud partitions are fast). Price on a day-rate basis (£150-£280/day/operative) multiplied by an honest estimate of days, not a per-m² guess — strip-out productivity varies too much by fixture density for a flat rate to be reliable.

Structural demolition (an extension, a garage, an internal load-bearing wall) needs plant. A mini or midi excavator (1.5-8 tonne) with breaker and grab attachment handles most single-storey structures; day rate with operator is £350-£550. Where the structure has cavity block or reinforced concrete elements, step up to a 13-20 tonne machine (£450-£800/day with operator) to keep programme reasonable. Price plant by the day, not by estimated hours — mobilisation, attachment changes and waste loading eat time that a hire-by-the-hour rate doesn't reflect fairly for either party.

Full building demolition is priced as a programme: mobilisation, soft strip of internals first (always — see selective demolition and strip out), disconnection of services (4-8 week lead times with utility companies — factor this into programme, not just price), structural demolition sequence (top-down is standard for anything with a neighbour attached), waste loading and removal, and site clearance/reinstatement. A semi-detached or terraced property attached to a neighbour costs more than an equivalent detached property because of temporary works to protect the shared structure, vibration monitoring, and Party Wall obligations — build that differential into the quote rather than pricing both the same.

Skip and Waste Disposal — The Line Item Most Underquoted

Waste disposal is frequently priced as an afterthought ("skip, call it £400") when it should be calculated from expected tonnage and current disposal rates. Demolition arisings are heavy — a single skip of broken masonry or concrete can weigh 1-1.5 tonnes per cubic yard, meaning an 8-yard skip can be full by weight long before it looks full by volume. Overloaded or "over tonnage" skips attract a surcharge from the skip company, or get refused collection.

Landfill tax is the biggest single driver of rising disposal costs and it increases every April — always check the current standard rate before pricing a job with meaningful tonnage rather than relying on last year's number. Segregating waste streams reduces cost significantly: clean inert material (brick, block, concrete) can sometimes go to a recycling/crushing facility at a lower gate fee than mixed waste to landfill, and plasterboard must be segregated in most areas due to the landfill ban on mixing it with other waste (gypsum reacts with biodegradable waste in landfill to produce hydrogen sulphide gas). A Site Waste Management approach — separate skips or bays for inert, timber, metal (scrap value — this can be a net credit), plasterboard, and general waste — costs more in skip numbers but less in gate fees, and is expected practice on any CDM-notifiable job. See demolition waste management for EWC waste codes, duty of care documentation, and segregation categories in detail.

Every load leaving site needs a Waste Transfer Note under the Environmental Protection Act 1990 duty of care — keep copies for at least two years. If any load contains asbestos waste, it needs a separate Hazardous Waste Consignment Note and must go to a licensed hazardous waste site — do not let a general skip firm take asbestos waste, even in sealed bags.

Party Wall Act 1996 — Check Before You Quote, Not After

If the demolition is within 3 metres of a neighbouring structure and will go deeper than its foundations, or within 6 metres at a line projected 45 degrees down from the base of the neighbour's foundation, the Party Wall etc. Act 1996 Section 6 applies and notice must be served at least one month before work starts. If the work involves an actual party wall — the shared wall of a semi-detached or terraced property — Section 2 applies with a two-month notice period. Neighbours have 14 days to respond; silence or dissent triggers the surveyor process and a Party Wall Award before work can proceed.

This matters for pricing in two ways: the notice periods add lead time to programme (build this in — don't quote a start date that ignores a live one-to-two-month notice requirement), and surveyor fees for a dissenting neighbour are typically £1,200-£3,500 per neighbour and are the building owner's (your customer's) cost to pay, not yours, but need flagging in the quote so the customer isn't surprised. See party wall agreement pricing guide for the full fee breakdown.

CDM 2015 Duties

Demolition is explicitly called out by the HSE as high-risk construction work. On any job with more than one contractor, CDM 2015 applies regardless of size; on jobs exceeding 30 working days with more than 20 workers present at any point, or exceeding 500 person-days total, the project is notifiable and an F10 form must go to HSE before work starts. For a sole trader or small firm taking on a full house demolition, this usually means you are the Principal Contractor, a Principal Designer must be appointed (this can be the structural engineer or architect on the project), and a Construction Phase Plan is required before mobilisation. Domestic clients have limited duties under CDM (these transfer to the contractor or designer by default) but still need informing of the process. Price CDM compliance time — F10 preparation, CPP production, ongoing site management — into prelims rather than absorbing it as unpaid admin.

What Affects Price

What to Include in the Quote

A complete demolition quote should show: labour and plant broken out by phase (strip-out, structural demolition, clearance), waste disposal as its own line with a stated tonnage assumption and a contingency clause for overrun, the asbestos survey cost if one doesn't already exist (or confirmation that a valid survey is in place and has been reviewed), Party Wall notice and process time if the site falls within scope, any reinstatement work (making good the boundary, capping services, seeding/levelling the cleared site), and VAT at the standard rate — demolition and site clearance is standard-rated at 20% in almost all cases; the reduced or zero rate only applies in narrow circumstances such as demolition that is genuinely part of a qualifying new dwelling construction, and that determination needs an accountant's confirmation, not an assumption in the quote.

Frequently Asked Questions

Do I need an asbestos survey for a job I'm confident has no asbestos?

Confidence isn't a legal defence. Regulation 7 of CAR 2012 requires an R&D survey before demolition or refurbishment work on any premises built or altered before 2000, regardless of how confident anyone is about the materials present. The only exception is where a suitable and sufficient survey already exists and covers the areas and materials your work will disturb — verify this in writing rather than taking a verbal assurance.

Can I self-remove asbestos cement sheets to save the customer money?

Asbestos cement (common on garage and outbuilding roofs) is generally lower risk and can often be handled as non-licensed work with wet-removal methods, FFP3 RPE, and correct disposal — see asbestos removal pricing guide for the risk-by-method breakdown. But "can" depends on the specific material and condition identified in the survey, not a general assumption that all asbestos cement is low-risk. Never dry-cut, break, or pressure-wash asbestos cement sheets.

How do I price for an unknown quantity of hardcore or foundations below ground?

Price the visible structure with confidence and flag foundations/substructure as a provisional sum or day-rate contingency unless a structural/ground survey has already established what's below ground. Grubbing out foundations to full depth can double the excavation and disposal tonnage compared to demolishing the structure above ground level alone — this is one of the most common causes of demolition jobs running over budget.

Who is responsible for disconnecting gas, electricity and water before demolition?

The client/contractor is responsible for arranging disconnection with the relevant utility companies (GDN for gas, DNO for electricity, water company) — lead times are commonly 4-8 weeks, so this must be arranged early in the programme, not left until the demolition date approaches. Never demolish over live services; always confirm disconnection in writing before structural work begins.

Regulations & Standards