Fill in the dimensions for your job - length, width, height, or whatever fields the calculator asks for. All measurements are in metres and millimetres unless stated. Want a head start? Try a Quick Start Project Kit - pre-built job templates that load common specs in one click.
2
Adjust the waste allowance
Most calculators include a waste percentage field. The default is a recommended starting point - increase it for complex cuts or awkward layouts, reduce it for simple runs.
3
Click Calculate
Your material quantities appear instantly. Results show packs, bags, or units needed, plus the total area or volume for reference.
4
Add UK market prices (optional)
Click Get UK Market Prices if the option appears. This loads current trade rates and gives you a cost estimate alongside your quantities. You can edit any of the prices before calculating if your own rates differ.
5
Save to a project
Click Save to Project to store these results. You can create a new project or add the line to an existing one. You can save one project for free, or upgrade to a Pro account to store as many as you need with cloud backup and access across all your devices.
6
Print or export
Use the Print or Export CSV buttons to save your results. The print layout is clean and formatted for site use or handing to a client.
Your saved projects are under My Projects in the menu. Each project collects all your calculator results in one place - handy for pricing up a full job. You can freely amend any part of a project at any point. With a Pro account you can also send polished quotes to clients or material specs direct to subcontractors.
Greater London Borough
Bexley Planning & Building Contacts
A predominantly suburban South East London borough with significant Thames riverside development opportunities, extensive Green Belt in the east, and an important legacy of listed buildings including the Grade I Hall Place.
Bexley Council - local planning authority for the borough
Properties close to the Thames, Cray, Shuttle and Darent rivers should be checked for flood risk before any development or extension is planned. A Flood Risk Assessment will likely be required for development in Flood Zones 2 or 3.
Around 20 conservation areas protect historic villages and suburban streets. The borough has significant Green Belt in the east, including Crayford Marshes, which limits development pressure. Erith Quarry and the Thames riverside are identified as regeneration areas. Former industrial and contaminated land in Erith and Crayford requires site investigation. Biggin Hill Airport to the south (in Bromley) creates some noise contour considerations near the southern boundary.
Building regulations approval is required for most structural work, extensions, loft conversions, new windows and heating system changes. You may use either the council's own building control service or a private Approved Inspector. For listed buildings, building control must be coordinated with Listed Building Consent requirements.
Heritage
Listed buildings, conservation areas and historic environment
Historic England - London Office
Statutory consultee for listed buildings and scheduled monuments
Hall Place and Gardens (Grade I listed, Borough managed) is the principal heritage asset - a Tudor and Stuart manor house in an exceptional riverside setting. The borough has around 20 conservation areas including Old Bexley village, Crayford and several suburban residential areas. Listed building numbers are lower than inner London but include several significant ecclesiastical buildings. Listed Building Consent is required in addition to planning permission for any works to a listed building that would affect its special architectural or historic interest, including internal works.
Flood risk from the tidal Thames affects the Erith and Belvedere riverside areas significantly - large parts lie within Flood Zones 2 and 3. The Rivers Cray, Shuttle and Darent also create local flood risk in Bexley village and Crayford. A Flood Risk Assessment is required for development in flood risk zones and should be obtained from a qualified specialist.
Local Professionals for Bexley
Vetted specialists with experience working in this borough
Bexley combines suburban residential work with riverside regeneration opportunities. Specialists in flood risk assessment, contaminated land and heritage work for the borough's listed buildings and conservation areas are in consistent demand. All slots are currently available - enquire to feature your practice on this page.
Architects
Architect slot available
Promote your practice to Bexley homeowners
Reach people actively planning extensions, loft conversions and refurbishments across DA1, DA5, DA6, DA7, DA8, DA14, DA15, DA16, DA17, DA18, SE2, SE28.
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