our designs Simple Structural Design- Reports –Drainage £980 + VAT BOQ & materials prices£1,100 + VAT Basement design £2,600 + VAT Residential New Build £3,400 + VAT Simple Engineering solution £2,200 + VAT Mechanical Building £3,200 + VAT Underground Structures £3,200 + VAT Complex Engineering solution Start £5,200 + VAT Simple Reinforced Concrete Structure £4,200 + VAT Simple Drainage £400 + VAT Site Inspection £200 + VAT Water Retaining Structure Start £6,200 + VAT Large Drainage Network Starts £3,400 + VAT