'a solid building' is correct and usable in written English.
You can use this phrase to refer to a structure that is well-built and likely to last for a long time. For example, "The architect designed a solid building that could withstand strong winds."
"The common European currency is a solid building," remarked Rolf Breuer, chairman of Deutsche Bank.
"But you can't hang paintings on glass" so he designed a solid building with the glass flying around it.
She sees a wrecking ball swing toward a solid building.... What she has done seems so small beside the enormity of what he proposes".
Two planes meet at an angle; one is bright, the other dark, and you inevitably see a corner of a solid building.
Villages in low-lying, coastal Bangladesh have long made use of raised earthworks and designated a solid building on high ground to run to in a cyclone.
"The post-crisis shift towards artist-run or non-profit spaces are a solid building ground for a scene," said the Athens-born artist Athanasios Argianas.
"This was a really solid building," Mr. Rogers said.
It's a powerful, solid building that looks like it's been sculpted out of rock, with small openings and massive ramparts.
"But it's still a very solid building, wonderful in terms of architecture, and it provides us with space for a lot of youth sports and activities that we never had before," Ms. Gentile said.
Little is known of the first two earlier churches, but the third building was a solid, squat building with a sturdy square tower at the west end.
Mr. Viñoly, who designed the Kimmel Center for the Performing Arts in Philadelphia, called the structure a "rational and solid building" in "very poor condition".
