Landscape and drainage problem - new finished house

Hello H omeone friends

Just hand over my home and we plan to move in prior to Christmas. Thanks for the recent raining days and we suddenly identify some drainage issue and please provide your advice and hope we can resolve it not very expensive

The house is pretty much face north and slope from west to east less than 1m. The west side is the "disaster area", with two concrete pads (one for watertank). My neighbour next door (on the west side) has higher ground level and due to it is still a vacant block, it create a nature fall from its side to my site. The builder has built some retaining wall along the line but when it is rain, water with mud can still easily pass through the bottom gap of retaining wall and flood to my side.

The most annoying part is no drainage point found on this side except the one close rear garage door and redirect to drain under slab. Probelm with this only drainage point is it seems higher than the ground and not sure how to push it down into the ground. Please refer to the following pics:

I have no issue with the backyard drain as it has poured of large concrete path and nature slop to the east vacant block.

I am borrowing some diagrams from the following thread as I think it has similar situation of mine. Thanks EmeryBB and hope you do not mind

viewtopic.php?f=19&t=52486

Site plan (red point is drainage)

http://i1106.photobucket.com/albums/h369/umehomes/Siteplan.jpg

Solution 1
http://i1106.photobucket.com/albums/h369/umehomes/Drainagediagram3.jpg

Solution 2

http://i1106.photobucket.com/albums/h369/umehomes/Drainagediagram2.jpg

Solution 3
http://i1106.photobucket.com/albums/h369/umehomes/Drainagediagram4.jpg

West side of my property

http://i1106.photobucket.com/albums/h369/umehomes/Landscaping-11PearlGibbsCctBonner001.jpg

Only drainage on west side which connect to drain under house slab

http://i1106.photobucket.com/albums/h369/umehomes/Landscaping-11PearlGibbsCctBonner004.jpg

Backyard concrete path

http://i1106.photobucket.com/albums/h369/umehomes/Landscaping-11PearlGibbsCctBonner009.jpg

Question:

1. Three options as shown on the diagrams above, are these options still valid to my block?
2. How to connect the AG pipe to the drainage point close to rear garage door?
3. Any other better idea???

Thanks very much everyone

Thats not a drain, just storm water piping connected to your downpipes.

You will need a minimum of 50mm of coverage above those pipes to the under side of any paving or concreting.

I have marked an around about area where you can fill to and pave to without causing any dramas provided you allow enough fall away and properly treat for pests.

You'll have to dig out all of that rubble (by hand, as there is no way you will get a machine in there) and create some fall away from the house.

Then raise the level with some 1/4 minus/blue metal/road base and screed off to level. You'll want to have a fall toward you garage(the low point of the storm water) around 1 meter off that pipe. get both sides to fall into it and then connect the drain to the pipe.

It also depends on how you want to finish the area. Do you want to pave or concrete it? do you want grass down there?

Its not a n easy task to explain how you'll need to do it.