My neighbour built a new home and laneway home, completed in 2015. He excavated much much much lower than previous home. Original house had a 3/4 basement in ground,with steps up to front door. Now level entry to front door, and full basement with 10 ft ceilings below ground. You have to take 3 steps down from front sidewalk/street to his lot which is now totally flat through to laneway house. I would say my back yard height is 8 feet higher than his now.
I have an existing retaining wall, as I am uphill from him, complete with rebar holdbacks,to 3 concrete footings. There is approx 16" of my property after my wall,filled with 3/4" gravel to the property line. Where he poured a non permitted concrete landscape wall,the entire length of property, that is below ground 3 ft, with 6"-12" showing above ground, that his fence is attached too. Frost levels are 12" here.
So my concrete wall, 16 inches gravel, and just above the footing of my wall his wall starts. Approx 24" of his concrete is lower than my footing.
He has 2 sumps in the front yard, below street level and a least 1 sump in back. There is some purposely hidden spots, that are actively being worked on. I think another sump or pit.
I have never heard a pump operating from front sump to street. Ive never heard a pump period. In 4 years. There is a permit for a pump, and a permit for secondary pump.
We have discovered in the last year, an overflow system from his front sump to my property. Discharging water under my detached garage. And also realized his wall is a blockage or dam. (cut off wall) The pipes for this overflow were laid between the walls. On my property. ( I should clarify, I did not live here during the construction to notice.)
Us exposing the area between the walls, has forced some changes (non permitted) to be happening on his property, and for the first time, I heard what I can only guess is a pump from below (?) his house, going up to a secondary system ? I heard it all the way around the exterior of the house, travelling thru copper pipes that appear to be his down spouts from a hidden gutter system on the 2 storeys above ground. It was loud enough to hear across my property, and the opposite neighbour heard it as well. Sounded like an empty tub, being filled with full blasting water in a big tile bathroom. Or like how a rec center pool echoes.
And honestly, it sounded like the gutters were being drained down, to a concrete pit below ground. If I had to pick what I heard, this is it. But that seems so unlikely. It lasted over 5 mins and it was an echoey hollow sound. AND IT WAS RUSHING.
BECAUSE he cant overflow to me any longer, is he now storing water to dump??? WHEN ITS SUNNY, AND BEFORE PREDICTED RAINFALL, like the case on Monday when I recorded the sound. Could he be using the hidden gutters, inside the gigantic mouldings surrounding his flat roofed, 3 storey house?
Is it possible, he cant properly get rid of his water thru the line, that is a combination of sewer and drain water to street? There is only 1 combination pipeline connected to street. For both houses.
It should also be noted it was an owner build, before the change, and he is not in construction at all. Skimped everywhere he could for signoffs, no geotech, basic engineering sign offs, foundation, dig, and had 1 single contractor with a drinking problem and a couple labourers do the entire job. No crews. Just inspections.
Is it possible to have an illegal drain system operating while also having drain tile systems for both houses? Ive seen the permits for drain tile on both houses. Perhaps a dry well, or french drain? A rock pit???
Im looking for someone to help me solve a strange puzzle, what the heck is happening there?
My concern is, I was flooding. Actually, I had a lake under my garage. My water table was 6" below the top of his wall. Right under the slab in my garage. Water was pooling, as it was blocked, and even though it sounds unlikely, he had a 2" white pex pipe, from his front sump, that is higher than the other end of it, under my garage foundation. We put a hose in the pipe, and it filled his sump, and then either a pop up emitter, or just an open end pipe, close to the sump, started to let water out slowly.This pipe was T'd, and the other end capped. Exposed and placed at the very end of property line, passed my garage. I think it started as temporary drainage for the laneway house. theres a note on permit that Inspector wanted to see it removed or capped off. So basically, a decoy? we are on clay. so the saturation is amplified. These pipes were not part of his building plan, the inspector told me. There was also a incorrectly installed, crude black 4" drainage pipe in my garage are, seemingly to collect water. However, when we put a hose in it, his sump didnt fill, water surfaced through the cracks in asphalt alley,in front of laneway house. I think it was capped on his end. Its all really bizarre I realize. He has the same (not sure of depths) wall on other side of his property. So if there was uncontrollable water amounts, he will have dammed himself in on that end. The neighbour is higher, not as much as me, but higher. We are close to the bottom of a gulley, that historically was swampy, now a ball field.