"hefty building" is correct and usable in written English.
You might use it to describe a large structure. For example: "The construction of the hefty building took 7 months."
He gives the project his blessing and we move on to the next appointment, at the National Theatre, a hefty looking building surrounded by a high gate and guards.
But there is a hefty cost of building the chemical plant to do the conversion, which might run over $1.5 billion for a new Canadian plant that would handle 40,000 barrels a day.
"Long March-7's successful maiden flight will greatly lift up China's comprehensive space capacity, and give the country a hefty boost in building itself into a space power," he said.
Some, like Washer, are already building hefty rental portfolios.
It also said the State of Bavaria, rather than the federal government, should pick up the hefty tab for building a storage facility to dispose of spent fuel.
"I don't think there are any segments of Central Park that are currently occupied by hefty, ugly nonpark buildings that have been legally designated for commercial use, and that's the difference," he said.
Red Bull, meanwhile, has been building a hefty social media marketing operation to help push its image as the energy drink of champions.
Rather than building a hefty metal machine that bears the weight of a load and that can get in the way of normal movement Walsh and his team are using fabric, flexible cables, and small motors to inject an extra shot of energy into each stride while letting a person move freely.
While "Spore" ships with a hefty set of creature, building and vehicle parts for its creation tools, the chief hinted that Electronic Arts might charge game players for extra design bits–say a few bucks for a pack of holiday-themed body parts.
