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First time drawing a site plan

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9.6K views 36 replies 20 participants last post by  Atnonio unreverse  
#1 ·
Hi, I just discovered this forum yesterday and thought I'd sign up. I just recently got my contractors license and have come across a project where I need a permit. The homeowner just wants a shed in his backyard that is 12x20ft. I've done some research so far and the county has a checklist of things. Some are pretty straight forward, others I need some help with:

  • Topo lines for all areas grading.
  • Location and dimensions of all existing and proposed easements, wells, sewage disposal systems and sewage disposal repair areas.
-Location of all proposed grading areas, retaining walls, drainage improvements, and trees that will be removed.
-Boundaries of all Special Flood Hazard Areas as defined by Placer County Code Section 15.52



Appreciate any help you guys can give me, thanks
 
#2 ·
I just pay an architect or engineer to do those. Takes them a couple hours probably. They also know the things that would throw up a flag. Then they avoid them.

Takes me days.

If I had an office staff it would be different, but I don't. Spend your time making money, not doing paperwork.

That being said. Make sure the customer pays for it in advance.

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#5 · (Edited)
Based on your post, it doesn't sound like you budgeted the cost involved in doing this with someone who is experienced at doing it... the good news is, that cost is to be borne by the customer as a AHJ requirement whether you do it or someone with more experience does... if you're flush with time, and feel relatively secure in your computer drafting abilities, go for it... if neither is the case, I'd encourage you to sub it out and learn how at a later time... if you want to use it as a learning experience as well, still sub it out but do your own and compare results..

There's a cost involved whether you sub it out or you do it... whatever you decide, be sure to absolutely let the customer know what costs need to be covered to get it done and charge for it... do not overlook this...
 
#8 ·
Thanks for the replies. I definitely want to use this as an opportunity to learn, so I want to try to do it myself. They have a sample site plan on the link I provided in the OP, and it looks pretty simple. I've tried calling the county all last week only to get a voicemail. Also tried emailing them too with no response.

It's just for a garden shed that just so happens to be over the limit of 120sqft. I feel like an architect would laugh and say "why didn't you just draw it yourself?"
 
#11 ·
You don’t need an Archi. Doubt a real one would even waste his time with that.

A draftsman is who you would use.

I don’t draw my own, I’m more profitable doing other things. Draftsmen have access to plot plans that to this day I still can’t find. I’m not sure where they get them from, but they have vastly more detail than the ones I get from the city/county.

I have drawn them before for simpler stuff. Depending on what the county wants, you might spend a day on site plotting every building, driveway, fence, landmark, tree, swale, existing utilities, and on and on.

And then there are a host of “notes” that they might want added.

I had one returned to me for a shop that I drew, because on the electrical page it didn’t specifically state that I would not backfill the electrical trench with rocks.

I had to write on the plan “Trench will be back filled with native soil not containing rocks, boulders, or other objects that could damage electrical cables”. 🙄

Then they were happy.
 
#17 ·
I did a detached shop for a guy.

Had to tear down an existing rotted remains of what had been a garage.

Had to get full plot plan with all structures. All existing utilities plotted out.

Engineering on the shop (1000sf).

Letters from CSD stating whether there were utilities or sewer in the old structure

Same with POCO.

Whole lot more. 13 pages of plans. Design, permits and engineering was over 10k.

Fire code stuff because it was SRA

Historic commission reviewed it because the property and structures are over 50 years old or some such thing.
 
#21 ·
I'll draw them for garages, decks, additions and smaller stuff that we build that don't already have an architect. Haven't had to do Topo on them, usually just existing and proposed building placement on a rectangular lot.

Call the city building dept. and ask if they have a current plan for that address and they will tell you where to find it online or possibly email it to you. Sometimes its on a county website.

If the structure will be near the setbacks have the owner hire a surveyor to find or set new stakes to measure off of.
 
#25 ·
We usually just order a topo survey and then draw in the few items missing, such as setbacks, sewer and septic. If your building a shed they will not be hard ass about it all. They just want to be sure that the shed is not placed in an easement, setback or over septic.
 
#28 ·
The designer was very adamant about that exact magnetic azimuth because she said it had something to do with feng shui. It didn't really bother me any because on a computer that's pretty easy to do, but to get precision on the ground, you need something better than a compass in a smart phone.

She was an interior designer and former home flipper. Don't ever work for those kind of people if you can avoid it.
 
#33 · (Edited)
Here the county has property tax data maps with flood plain data, and most zoning overlays on line for free.
Use aerial photos and lot line length for site plan outline, topo for water flows. and various easements.

Draw the site to scale, draw in existing buildings with ashlar and roof lines, sidewalks driveways , set off the various set backs to scale on plan view, to show you where you can't build.

You ll need locations of water stop boxes overhead lines buried lines, and septic tanks, and any other obsectles to construction and cross lot equipment traffic + one call flagging.

You will need to do % checks in most zones to see if the lot has enough area to allow anymore structures....as a written attachment page. and any local covenants....

You'll need to find the lot pins before any actual construction of a fixed building.

A simple key, on final drawing, photocopy several times.

Going forward keep track of time and $ to bill for next one and bill for planned jobs that don't go to completion.
Don't let your Intellectual property get used by competition, or HO for free....
Get sample of adequate plan from authority so You don't over plan/spend on site plan.

RE: magnetic north has been moving recently, so up date your correction for any magnetic compass based surveying.

Practically GPS and GIS has ended magnetic compass using for all but the crudest layout and navigation.
Even if you plan on hiring a pro, do as much as you can prior to save $ and improve their output at the least cost.