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[new2grammar]

Simplicity is the beauty of this entire concept of “My Home”. Lack of income proof is a common problem among people engaged in unorganized sectors. Although, they are capable of paying EMI’s of Rs.10,000/- to Rs.20,000/- comfortably, they are denied loans by financial institutions owing to their regulatory constraints. “My Home” has come as a long awaited rescue for whom, documentation is a roadblock.

[Raymott]

Simplicity is the beauty of this entire concept of “My Home”.
This would normally be expressed as "The beauty of this entire concept of "My Home" is its simplicity." It sounds like you're trying to define "simplicity".
Lack of income proof is a common problem among people engaged in unorganized sectors. Although , they are capable of paying EMI’s of Rs.10,000/- to Rs.20,000/- comfortably, they are denied loans by financial institutions owing to their regulatory constraints. ["their" is ambiguous since you have two possible plural referents - 'they(people)' and 'institutions'. It's best to just omit it.] “My Home” has come as a long awaited rescue for whom, documentation is a roadblock.

“My Home” has come as a long awaited rescue to those for whom lack of documentation is a roadblock."

I'd write "obstacle", not "roadblock".