I need house extension calculator guide article

Headline: House extension calculator
Tone: Technically water tight yet friendly, warm and extensive
Word count: 1,000

Key Themes:

- Neighbours who have done similar works are a great source of information
- Calculating extension costs: typically upwards of £2,000 a square metre
- Calculating refurbishment costs: Typically £1,000 a square metre
- Calculating loft conversion costs: Typically around £2,000 a square metre
- Calculating basement conversion costs: Typically around £3,500 a square metre
- Area dependent e.g. conservation needs, soil type/ground work difficulties for foundations
- Extension types: single storey, two storey, kitchen extension, living area, extra bedroom, anex
- House types, semi-detached, detached, terrace, townhouse, bungalow, Victorian, Georgian, Edwardian, 30s/70s, new builds
- Extension design ideas: wrap around the house, flat roof, pitched roof, glazing ambitions, doors (e.g. bifolds?)
- Materials, finishes and specifications drastically change a quote: glass, steel, brick, concrete considerations
- Typically extensions increase the value of a house but seek advice from an estate agent because it may not be the case if locally there is competition from other more desirable locations
- Funding: remortgaging, loan, savings
- Other costs to factor in: architectural costs, a contingency fund, building control costs, party walls
- Timings: the faster you want/need works to finish, the more expensive and costly it becomes