Had the chance to visit this site many years ago and was disappointed.

A much better bet is to do a free, self guided walking tour of Barragan's early Tapatia works in Guadalajara. 

It takes you on an approximately two hour walk around the Colonia Americana where you can see his evolving style.

You can visit the Gonzalez Luna  (Jesuit University) House, the Casa Cristo House and the Casa Franco for free..

 

You can find this tour by searching for:  "Revisiones de Guadalajara".