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View Full Version : Ideas for pricing extensive french drain system


guitarman2420
02-17-2011, 04:02 PM
I have a long time residential customer who has a water problem. I met the county water inspector and came up with the plan that should work. I estimate that I need @ 3 runs of 150-200 foot of 6" and 1 run of 8" pipe. The topography of the property will help the runoff from the pipes once it is routed to the correct area. The present problem is compounded by idiot neighbors blocking the water drainage spill-off area. What is a good price per linear foot? The client will pay what is asked; but I want to be reasonable and not rip them off. I found pricing anywhere on the threads and the internet from 7-30 a linear foot. I'd like the pricing as a turnkey. There are no rock or soil issues - easy digging.

ReddensLawnCare
02-17-2011, 04:12 PM
How long do you think it will take you?

Showpropserv
02-17-2011, 04:35 PM
Wouldnt that be illigal by blocking that off

guitarman2420
02-17-2011, 05:13 PM
I figure 32 manhours. It may take a little longer as I don't have my full crews working during the off-season and I'll have to do much of the labor (ugghh).

As far as the illegal part of the people blocking the drain field, you're right; but the homeowner is not willing to go to battle over it. They have lived side by side for years.

Thanks for the help

guitarman2420
02-17-2011, 05:16 PM
Also, in looking at some of the specs on the drainage pipe, I may be overdoing it with the 6 and 8 inch pipe - 4" may work. Has anyone had a good experience with flex-drain?

Showpropserv
02-17-2011, 05:53 PM
I figure 32 manhours. It may take a little longer as I don't have my full crews working during the off-season and I'll have to do much of the labor (ugghh).

As far as the illegal part of the people blocking the drain field, you're right; but the homeowner is not willing to go to battle over it. They have lived side by side for years.

Thanks for the help

big fences make good neighbors

ReddensLawnCare
02-17-2011, 07:28 PM
Then I would just price it by what you feel you want to make per hour say 45 or 50..then add materials and delivery. Im not try to be a smart a** just my basic equation for figuring up work price

guitarman2420
02-17-2011, 10:04 PM
Don't feel you're trying to be smart at all - I'm just trying to get some advice and feel good about the pricing. Are you billing out at 45-50 per hour? Depending upon the type of job, we are at 40-45 for general work & 75 for landscape design.

PremierT&L
02-18-2011, 01:27 AM
Are you using solid pipe or perf with gravel? Do you have to lift and replace sod? We usually charge are 5 to 7 per foot for 4 inch pipe if it's easy digging. In this case your best bet is to price out your materials and estimate your labor. Hope this helps.

guitarman2420
02-18-2011, 07:03 AM
We're using perf pipe for @ 300 foot and solid for @ 200. We will be using gravel and a sock where needed.

mapex7066
02-26-2011, 03:30 PM
Wouldnt that be illigal by blocking that off

Is that a question? A statement?

2brothersyardcare
02-26-2011, 04:14 PM
rent a tractor and charge 600 but if you need rock charge accordingly

castle555
02-26-2011, 04:29 PM
You want to do this thing right. Consider a few things first.

I like that you are charging your customer fairly -don't over-build if you don't need to.
You have a question about size of pipe.
A 4" pipe would be sufficient for most watershed issues. Here's an example:
About one acre at 1" of water depth is around 25,282 gallons.
Your 4" pipe without any incline and sitting level will hold about 65 gallons of water per 100', or 200 gal in 300' of pipe when full. You should not worry about it not being able to handle 1" of rain as it's not all going to filter through the ground at once -depends on soil type, and the level of the bedrodk below, mainly. What is your soil type?

20 mil plastic and 3/4" crushed gravel on perforated solid white ABS pipe wrapped with Geo fabric is your most desirable and quality built " French Drain". |U]O[/U]|

Need to know the parts, and then you figure the LF cost. For an easy dig, 12" to 18" depth, I'd go about 4.00 to 5.00 /LF for hand labor.
If you are using a machine then put in the cost,

Any of you guys consider how long that silt sock around the pipe is good for before it silts up, or whether the water is actually going to find it's way into the pipe? I don't put a lot of faith in these systems working for more than a few years or so.
We usually back up the in-ground system with a surface collection system.

guitarman2420
02-26-2011, 04:56 PM
Castle555, thanks for the great information. That's exactly the type of information I was looking for. I think I will end up @ $7-8 a linear foot.

LoweJ82
02-26-2011, 08:52 PM
I always wrap my drain system with a landscape fabric to keep it clean.

Figure out what it will cost for materials, if your thinking 32 man hours I'd estimate it for 30-42 hour's $1500-$2100 based at $50 pr hr, if I think a job is gonna take 30 hours ill tell the customer a bid for 30-38 hours telling them it will be no less than $x and no more the $y for labor plus materials, they want a price per foot I'd figure it with high end to cover your rear.