A young Brisbane woman who was flying rainbow flags outside her house in support of same-sex marriage has had her windows smashed in with rocks in a late-night attack police said may be linked to three other incidents nearby.

Olivia Hill, 22, was home alone on Sunday night with her miniature dachshund when a man pelted three rocks at her Woolloongabba home, about midnight.

Two windows were broken, but when the man began yelling homophobic slurs, Ms Hill froze.

"I heard this man yelling, 'what the f*** is this shit?'" she said.

"I thought 'this is how I die' — I die at the hands of this homophobe that is outside my house right now.

Two windows were smashed in Ms Hill's home. ( Facebook: Larissa Baldwin )

"I don't think I've ever been that scared in my life

"I thought that was it."

Ms Hill dialled triple 0 and a friend came over to comfort her before police arrived.

She only managed to get a glimpse of the man, saying he was wearing black.

Swastikas were painted on three other properties in inner-southern Brisbane between Saturday and Sunday night. ( Supplied: Joel Garvey )

Police said three other homes were also targeted between midnight Saturday and midnight Sunday.

Two homes on the same street in nearby Dutton Park had swastikas painted on their properties, as well as another business in the same suburb, which had a swastika painted on a fence and signage.

All the properties were hanging rainbow flags.

Love letters sent before the late-night attack

Ms Hill said most of the response to her home had been positive.

People had given her and her housemate handwritten love letters and thank you notes, or had stopped them on the street to thank them for their support.

Police said the four homes and businesses which were vandalised over the weekend all had rainbow flags hanging. ( Supplied: Joel Garvey )

It was only occasionally people yelled abuse from their cars, but Ms Hill said she had never experienced violence like she did on Sunday night.

"Now it's over and sinking in, I'm nervous and scared but I'm happy I'm not hurt and it's only a window," she said.

"I feel really lucky that it was only a window, and that it wasn't someone's life."

Ms Hill, who is bisexual, said the postal vote on same-sex marriage had brought out the worst in some people.

The swastika spray painted on one home was covered up with a yellow heart. ( Supplied: Joel Garvey )

"I don't think the end of this postal vote will end homophobia," she said.

"At the moment, it's just there, it's everywhere, and it's just hard to avoid.

"A broken window isn't going to break our spirits and we are still going to leave our signs up there and keep campaigning for 'yes', and we're going to keep on fighting."