If you need to create a mirror image of the main RPM directory tree in your account, execute the following:

mkdir $HOME/rpmbuild
mkdir $HOME/rpmbuild/SOURCES
mkdir $HOME/rpmbuild/SPECS
mkdir $HOME/rpmbuild/BUILD
mkdir $HOME/rpmbuild/SRPMS
mkdir $HOME/rpmbuild/RPMS
mkdir $HOME/rpmbuild/RPMS/i386
mkdir $HOME/rpmbuild/RPMS/i586
mkdir $HOME/rpmbuild/RPMS/i686
echo "%_topdir $HOME/rpmbuild" >> $HOME/.rpmmacros