You may have heard that the rule of thumb is Â£1,000 per m2. However, this figure has been bandied about for rather a long time now! From experience, Â£1,200 per m2 is a now a more realistic estimate for a house extension cost in 2015 and reflects price increases over the last few years.So, for your 4 x 5m extension, the build cost would be roughly Â£24,000.s a rule of thumb you can add 50% extra to the build cost of a single storey extension. So, Â£24,000 +50% = Â£36,000. + Add on 10-15% for professional fees (architect, planning application, building regs, structural engineer). + VAT.
Ankylosing spondylitis is a form of progressive arthritis due to chronic inflammation of the joints in the spine. Its name comes from the Greek words â ankylos, â meaning stiffening of a joint, and â spondylo, â meaning vertebra.nkylosing spondylitis is a form of progressive arthritis due to chronic inflammation of the joints in the spine. Its name comes from the Greek words â ankylos, â meaning stiffening of a joint, and â spondylo, â meaning vertebra.
1 Ankylosing spondylitis belongs to a group of arthritis conditions that tend to cause chronic inflammation of the spine (spondyloarthropathies). 2  Ankylosing spondylitis affects males two to three times more commonly than females. 3  Ankylosing spondylitis is a cause of back pain in adolescents and young adults.nkylosing spondylitis is considered one of the many rheumatic diseases because it can cause symptoms involving muscles and joints. Ankylosing spondylitis is two to three times more common in men than in women. In women, joints away from the spine are more frequently affected than in men.