(Please note that in certain situations,  what ,  when , and  where  can function as relative pronouns.) Relative pronouns introduce relative clauses, which are a type of dependent clause. Relative clauses modify a word, phrase, or idea in the main clause.
The 2014 Survey of Construction (SOC) from the Census Bureau shows that the average completion time of a single-family house is around 7 months, which usually includes around 25 days from authorization to start and another 6 months to finish the construction.
1 You have 12 months to complete the building. Construction work must commence within the first 3 months following registration. 2  Your loan term is limited to 240 months.  You only pay interim interest on the Building Loan until the building is complete.