I'm assuming that you're talking about buying a manufactured home that's already in a park like Fox Hollow in Sunnyvale. In that case, the process of buying a manufactured home is effectively the same.
There are minor differences in the customary inspections performed - manufactured home have a Health and Safety inspection which is similar to a Property Inspection for a house. Both also get Termite Inspections. Be aware that manufactured homes have a space rent. In the nicer, well-maintained parks, space rent can be ~ $1000 per month.
It's always in your best interest to have an agent help you with a purchase. Understanding all of the purchase contracts, disclosures and inspections can be difficult. A good agent can also help you neogtiate the best price and terms, and ensure you are picking the right home for you.
Intero Real Estate