The secrets to using floral foam include: 1  How to wet the foam. 2  How to fit it to the container. 3  How to cut and insert flower stems.
Extensions are more expensive: RICS gives a guide cost of between Â£1,260 and Â£1,680 per square metre for an extension with plastered finish. So a 20-square metre single-storey extension will range from Â£25,200 to Â£33,600 â before you've put down flooring or installed a kitchen. Side extensions must be single storey with a maximum height of 4m. 2  If the extension is within 2m of a boundary, the maximum eaves height should be no higher than 3m. 3  A single-storey extension must not extend beyond the rear of the house by more than 3m for an attached house or 4m if the house is detached.
Single storey house extension of approx 5m wide by 4 m deep of standard construction on a standard site with no problems. The project is located in the Northwest where average build cost is approx Â£1200 / sq. m (this is an estimation and could be as much as Â£2000 / sq. m). We will assume that we live in a wonderful world where VAT does not exist so total build cost Â£24,000 excl fixtures and fittings. Method 1 â Lump Sum