Can the present perfect continuous construct be used in passive voice?

Can the passive voice be used for sentences in the present perfect continuous?

I understand the present perfect and its passive voice (have/has built, has been built). However, the passive voice of present perfect continuous is unclear:

• Active: They have been building this house for years.


• Passive: ???

I have seen suggestions of “This house has been being built for years,” but it sounds awkward and I don't recall anywhere else where two be verbs follow one another. Is this the right form to use?