Homeless charities and Welsh politicians say more could be done to help reduce the number of empty homes in Wales.
The latest figures show there are currently at least 23,000 properties which have been empty for more than six months.
Meanwhile 90,000 people are on the social housing waiting list.
Tonight Wales This Week investigates the impact empty homes are having on our communities and what is being done to tackle the issue.
Figures from across Wales show:
There were 20,036 empty properties in 2009/2010
That figure increased to 24,376 in 2011/2012
The number of empty social housing properties has increased in the last year
80% of empty properties in Wales are privately owned
Although most recent figures indicate the number currently stands at nearly 23,000, experts say many more are unaccounted for and the real figure is closer to 25,000.
Empty Homes Wales is a project run jointly by local authorities, the Welsh Government and the housing group United Welsh.
Spokeswoman Michala Rudman says the cost of renovations is one of the many reasons owners are leaving their homes abandoned.
Helen Watkins from Tredegar lives next to seven empty properties which are currently boarded up.
They have all been broken into and vandalised.
In 2011, the Welsh Government set itself a target of bringing 5 thousand empty homes back into use by 2016.
It has introduced the £20 million Houses into Homes scheme to help meet that goal.
313 empty homes have so far been completed through the scheme. That is less than 15 per cent of the two thousand one hundred brought back into use overall.
The Conservatives claim the Welsh Government has “grossly underestimated” the scale of the empty homes problem.
Plaid Cymru meanwhile says empty homes are a “scandal, and a “terrible waste of resources”.
But the Welsh Government says it’s still early days for the Houses into Homes scheme.
Together with other measures, it says it is on track to meet its overall target.
Empty Dwelling Management Orders were introduced as part of the 2004 Housing Act to help tackle empty homes.
While it allows local authorities to take over temporary possession of the property and help find a tenant, it is unable to force the owner to sell.
Environmental Health Officer for Torfaen Council, John Clements, say the legal process can be lengthy.
A new bill currently being considered would look to fine owners of unused houses who have previously been entitled to reduced council tax.
This means local authorities could charge up to 150% council tax.
Homeless charity Shelter says a more joined up approach is needed to tackle empty empty homes.