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Tell me about building in flood zone A in Louisiana. Trying to find out flood ins cost bef

Posted on 2/20/21 at 8:57 am
Posted by Tiger In the Swamp
Louisiana
Member since May 2014
839 posts
Posted on 2/20/21 at 8:57 am
Looking at a piece of property in felicianas that is located in flood zone A. What does this entail / require to build on?
I was told by neighbors that as long as the property is above 141 elevation, once a slab elevation survey is done and if its so much above 141 no flood insurance is required? Where do I find this in writing?
Anyone have any dealings with this or know the details?
Thanks
This post was edited on 2/20/21 at 12:00 pm
Posted by derrick0356
new orleans
Member since Jan 2013
277 posts
Posted on 2/20/21 at 9:00 am to
I don't know where to find that outside of FEMA but keep in mind that some lenders may still require a buyer to have flood insurance before closing if you're close to a zone.
Posted by EveryoneGetsATrophy
Member since Nov 2017
2907 posts
Posted on 2/20/21 at 9:51 am to
Ask your insurance agent.
Posted by miramon
Member since Oct 2016
176 posts
Posted on 2/20/21 at 10:04 am to
Your neighbor is wrong unless you are buying cash no bank involved. Whatever BFE is on that lot, build your home so that your lowest floor is 4 feet above BFE. If you build an enclosure under that you need to add vents. 1 square inch of vents per square foot of enclosure. Get building plans made, then have a flood surveyor create an elevation certificate based off of the plans, and then give that elevation cert to an Insurance agent, and then you can get an accurate flood quote.
Posted by Chad504boy
4 posts
Member since Feb 2005
166246 posts
Posted on 2/20/21 at 10:16 am to
quote:

Ask your insurance agent.


Ask your bank. Insurance agents don’t make any rules
Posted by derrick0356
new orleans
Member since Jan 2013
277 posts
Posted on 2/20/21 at 11:27 am to
That's what we did and it lower our rate by adding vents on our garage since the house is raised but the garage isn't.
Posted by Tiger In the Swamp
Louisiana
Member since May 2014
839 posts
Posted on 2/20/21 at 11:58 am to
I guess Im trying to find out how high flood insurance will be before I purchase the lot. I haven't had the house plans drawn up yet either.
Posted by armsdealer
Member since Feb 2016
11500 posts
Posted on 2/20/21 at 1:01 pm to
If you build it appropriately above BFE your rate should be around $4-$600 a year, if you don't it could be thousands per year.

A good way to get an estimate is to find some properties in the area for sale that are similar to what you want to build and have your agent pull the flood insurance disclosure.
Posted by 3deadtrolls
lafayette
Member since Jan 2014
5693 posts
Posted on 2/20/21 at 1:04 pm to
My house ended up in a flood zone with the new maps despite being above base flood elevation (flood zone ends in my backyard ). I had the survey done and filed a LOMA with FEMA. Also sent paperwork to insurance agent and I'm back to paying $450 a year.

This is Louisiana, always have flood insurance.
This post was edited on 2/20/21 at 1:06 pm
Posted by wickowick
Head of Island
Member since Dec 2006
45803 posts
Posted on 2/20/21 at 1:50 pm to
When you get to a certain height above the base flood elevation, the yearly cost for insurance is the minimum, which is around $500 to max out both structure ($250k) and contents ($100k)
Posted by Tiger In the Swamp
Louisiana
Member since May 2014
839 posts
Posted on 2/20/21 at 1:58 pm to
Wick,
I have the plat map and Ive found the elevation of the lot on the assessors website.

How do i find out what BFE is for a certain piece of property?

Also, who decides how high above the BFE I have to be?

Im guessing after buying the land I would have it surveyed and the surveyor would put me in contact with who? FEMA? NFIP? I wouldn't think I could just go by surveyors word? It should be in black or white in writing somewhere right?

Im just not sure who to contact directly to get a solid answer on paper before purchasing the property.

Thanks again
Posted by trident
Member since Jul 2007
4746 posts
Posted on 2/20/21 at 2:04 pm to
Try this

LINK
Posted by armsdealer
Member since Feb 2016
11500 posts
Posted on 2/20/21 at 5:25 pm to
The listing should have a flood disclosure, it has all the information you need.
Posted by rodnreel
South La.
Member since Apr 2011
1316 posts
Posted on 2/20/21 at 7:43 pm to
I am a retired surveyor and can offer the following suggestions. A flood zone A with nothing behind it and a flood zone A with a number or letter behind it are two completely different things.

Lets start with the latter, flood zone A with a number or letter behind it, has a BFE or base flood elevation determined. You have to build at or above the BFE. Examples would be AE or A10. A BFE is an elevation for the lowest floor and/or mechanical equipment servicing the structure. FEMA uses diagram numbers which reflects the type of construction used to show where to measure the lowest floor elevation for certificates. A few examples would be slab on grade, elevated on pier or pilings, basements and elevated on crawl space. Each diagram number instructs the surveyor where to measure the lowest floor plus other required measurements.

FEMA has requirements but the city or parish can have higher requirements than FEMA, so always check with the floodplain manager, who is more than likely the planning director about this. He/She can give you both requirements if different. Insurance is based on FEMAs BFE. As others have stated the higher you go above the BFE the cheaper your flood insurance will be which is required in a Zone A for at least the mortgage amount. Above the BFE FEMA rounds off to the nearest foot and certificates are measured to the nearest tenth of a foot. If a BFE was 100' and you build to a 101.6 the insurance would be based on a 102' elevation or a +2'.

A flood zone A with nothing behind it doesn't have a BFE determined by FEMA. Check with the floodplain manager on who determines the BFEs, it may be the corps of engineers or you may have to hire an engineering firm. If this is the case I would build well above the BFE and get everything in writing or well documented.

Often I would be asked to determine the ground elevations for a potential buyer at a potential building site but would only do it with the sellers permission.

You are dealing with FEMA, the local Floodplain manager, surveyors, lenders, insurance agent and building designer to all come together for a go, no go project. Each has his/her own responsibility. An insurance agent can run the "what if" numbers about flood insurance cost once you know the flood zone, BFE, potential lowest floor elevation, diagram number and building/contents amount. The building amount has to be at or above the mortgage amount, the contents amount is optional.

I wouldn't rely on realtors info. Also don't rely on assessor maps for elevations. I have seen them within a half of a foot and off by 5' or more. Please note the disclaimer on assessors maps about the information it contains which includes property lines and elevations.

If you have other questions leave contact info and we can talk.


This post was edited on 2/21/21 at 8:56 am
Posted by KemoSabe65
70605
Member since Mar 2018
5131 posts
Posted on 2/21/21 at 10:01 am to
FEMA.gov and go to maps, address, create firmette, should give you bfe.
Posted by Tiger In the Swamp
Louisiana
Member since May 2014
839 posts
Posted on 2/21/21 at 1:09 pm to
Thanks for the detailed info. I reached out to a few contacts Ive found and finally found the community floodplain manager. Ive got an email out to him now.
Posted by RushHour
East Texas
Member since Dec 2018
100 posts
Posted on 2/21/21 at 4:32 pm to
Had a house I sold recently in Houma that was 1' under BFE. It was grandfathered in but my flood was still around $2,000 a year.
Posted by rodnreel
South La.
Member since Apr 2011
1316 posts
Posted on 2/23/21 at 7:59 am to
The height you build above the BFE is called freeboard. Here is an article about it.

LINK

Another suggestion is if you do build in an area with a BFE usually a surveyor will set a bench mark, something with an elevation near the location of your project. The contractor will use the bench mark to construct your house at the proper elevation. Its an added expense but have the surveyor check, lets say for a house on slab, the top of the form boards prior to pouring concrete.

I have done many of these checks and found 3 mistakes by the contractor, all too low. A few hours and a few form boards later, the mistakes were fixed. I have also done 2 or 3 where the contractor was too low and the concrete was already poured, ouch.
This post was edited on 2/23/21 at 10:56 am
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