Some senior residents in Sydney fear they could be forced out of their homes under proposed changes to New South Wales housing laws.

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The Strata Development Bill 2015 before the State Parliament is designed to deliver sweeping reforms that will impact both residential and investment properties.

The changes will cut red tape and boost housing stocks in some of the state's most sought-after areas, but residents fear the changes will be at their expense.

Carol Saint John has lived in a townhouse at Seaforth in Sydney for almost a decade.

"I feel violated. I feel let down," she said.

"I've worked hard all my life and saved to put myself in this position, which I thought was very secure, and now I really feel let down."

She is 73 and loves her home, she feels safe there, but now she fears proposed legislation could put all of that at risk.

Amelia Christie, from Combined Pensioners and Superannuants Association of New South Wales (CPSA), said there are two bills surrounding strata being put forward.

"Some of them are good measures, they will make strata living better for people, but there's one crucial thing in there that has not got a lot of attention and that is essentially taking away people's property rights: only 75 per cent of owners within a building will need to agree for the building to be sold off as a whole," she said.

Those proposed changes are the focus of the CPSA's annual conference today.

Seniors subjected to 'bullying tactics'

Included in the overhaul are around 90 amendments to New South Wales' strata law and planning legislation.

Of most concern to older residents is Section 10 of the Strata Schemes Development Bill 2015.

Ms Saint John said she is distressed about the proposed changes.

"People such as myself, who thought they would be able to live out their entire rest of their life in this sort of environment, all of a sudden it's quite threatening," she said.

"People subject us to bullying tactics by the developers.

"It seems ludicrous to remove people from homes that they're already living in.

"Whilst I do realise they do need to house other people, of course it's a big problem but we... I'm going to be upset, I'm sorry."

Paul, who does not want his full name to be used, has lived at his house in Belmore since 1987.

"It took me many years of struggle to get to put together all my money to buy a place of my own because I couldn't cope with rising rents, I couldn't cope with the insecurity of it all," he said.

"So that's why I purchased this place, and I'm now being told my legal contract of 29 years ago can be reversed."Paul said the stress is taking its toll during what should be his twilight years.

"I don't have anywhere to go if I'm evicted from this place," he said.

"The people with investment interests, they already have a home.

"This is my home. But they don't have to worry about having a home to go to, because when you have a unit as an investor, you don't have to worry about any insecurity because you've sort of got two homes, one you sell and one you live in.

"So the anxiety and concern of the whole thing, I mean it's affecting my health."

New South Wales commissioner for fair trading Rod Stowe said several safety nets have been built in to the legal framework, including a new advice service.

"Anybody involved in such a situation will be getting more than market value, so you know, looking at recent circumstances of this sort would suggest that people in these sort of circumstances will be getting significant return on their investment," he said.

"There can also be plans that provide for people to live in the new development."

The legislation is expected to pass parliament this week.