Have you ever wondered what the inside of a hydro house looks like?

A Current Affair has been given access to dramatic police raids in Sydney’s west, all caught on police body-cams.

Specialist police bust down doors, locate and remove the illegal drugs all while rounding up the crooks found inside the home.

The first raid takes place in Seven Hills following a tip off to police.

Police raid a hydro house in Sydney.

"We conducted surveillance on the premises and we ended up getting a search warrant," Detective Inspector Paul Tickner said.

Confident there are drugs inside, officers watch and wait for someone to turn up at the house before making a move. Once the target is spotted, police suit up and move in.

The police body-cam shows how officers navigate their way from room to room, searching for the man who was seen entering the house.

As they search, they also uncover copious amounts of cannabis plants, puddles of water and live electricity cables.

Police allege over $500,000 worth of plants were found.

Officers check every possible place in the house but there is still no sign of the man who entered.

He is eventually found out the back of the property trying to jump the back fence. He is quickly placed under arrest and moved to the front yard.

The man repeatedly claims that he doesn’t speak English as police do their best to explain why he is under arrest.

While the man is taken into custody, police must wait for the power company to come and turn off the electricity to the home before they can re-enter and see how many plants are inside.

A 20-year-old man found on the premises claimed he did not speak English.

Detective Tickner claimed the house had been set up to steal electricity from the grid.

"There was over a hundred transformers in the house and 118 lights … the amount of power they are drawing is massive," he said.

Once the power is turned off and the location is deemed safe to enter, police find exactly what they are looking for.

Every room has been transformed into mini hydro hubs, jam packed with plants of all shapes and sizes.

The man in the house was charged.

The bedrooms, the lounge room, the bathrooms and even the laundry cupboards have been altered to grow marijuana.

The plants are at varying stages, with some ready to harvest while others are still only seedlings.

Police begin to remove the plants one by one and it soon becomes evident of how much was being grown inside the home.

A local neighbour is shocked to discover what’s been hiding next door.

"That is unbelievable … I never smelt it, I can smell it now," the neighbour said.

The 20-year-old man found on the property was charged with commercial cultivation and possession of cannabis.

The next target for police is this two story house in Colebee and from the outside, there is nothing that gives away what is being hidden on the inside.

Police have been led here by another tip-off and are certain there are drugs inside.

Officers found plants everywhere in the house.

When they enter, downstairs looks fairly normal, with furniture and kids toys spread around, but it's upstairs that police find the drugs.

The entire second floor has been remodelled. There is no furniture, just plants. Hiding among the plants, police find the man they saw enter the home.

He is promptly arrested and taken outside where he will be driven to the local police station and charged.

Chief Inspector Graeme Wright explains why police focus on catching the growers rather than the grow houses.

"It's not just about getting this [the cannabis plants] out … its getting the person whose doing it, he's the cultivator and he is there for commercial means," he said.

121 plants are seized from the property, estimated to be worth over half a million dollars.

The 23-year-old man found in the home was charged with commercial cultivation and dealing with the proceeds of crime.