(land-atlas-production.up.railway.app)
Many of large ranch lands and farms are going to be listed exclusively by a certain broker which may require website scrapping at minimum and or heads up data entry at worst.
Colorado:
For general usability, I'd suggest at a minimum adding State and County lines, and further, census place points for labeling.
You've included some interesting filters that's for sure.
And of course my usual plug for a great mapping book - How to Lie with Maps - https://press.uchicago.edu/ucp/books/book/chicago/H/bo274005...
I'd be willing to give you input.
I saw similar things for a property in Joshua Tree, California that had no address, just a street name.
I would do as /u/ecommerceguy has suggested and at the very least add a toggle for State and County lines, and label roads and towns and other useful information.
As a feature that you could consider eventually adding for those who are interested in finding a rural property to land on, consider adding a toggle that can show the locations of the closest power and water access for a property using an labelled icon or other visual aid.
Sometimes the biggest challenge in determining whether you should purchase a property that you can live on is to find a place that is close enough to existing infrastructure that it doesn't cost more than the land value to gain access to water. Electricity is less important unless you are far enough north that your exposure limits your collection ability so that battery storage becomes a critical cost to consider.
With that in mind, adding info about solar suitability could be useful.
Here is a Google maps project that can help evaluate options for a property.[0]
[0]https://mapsplatform.google.com/maps-products/solar/
Water is the biggest challenge in most places. I see that you recommend pulling state wells logs for the properties. Perhaps a link to that resource would be useful. I have done water availability and quality work now for a couple of relatives in different states. There is a lot of variability in the data available and the quality of the data. Knowing which agency handles private and public well locations helps a lot. Knowing which agency monitors water quality locally also is important.
I know this is part of due diligence for an interested buyer. I think for your tool to maximize value to a buyer it should make it easy to find the bits of information that can steer the buyer to a conclusion.
He intends to occupy and farm it. Organic if possible, else close enough. And I when he can afford, he'll be looking for more. I sent him your url.
Another thanks on his behalf, and his family too!
One of the best:
https://www.agronomy.k-state.edu/outreach-and-services/soil-...
Homeowners, if you care about your grass looking great, not a bad idea to get a sample.
I want to buy land some day and want to avoid the hotspots where my freedom of my property is curtailed in this way.
And maybe the soil use isn't specifically limited, but other proxies are in effect: I think of (a) water use, (b) spread of patented seed observed and business prosecution of your crop or even (c) control of your livestock or animals because "<insert plague or health concern here>".
Stay informed, build positive networks of similar minded/valued people and choose your spot wisely. I have lived on farms, but I am far from a guru on the subject. Your list of concerns, in my opinion, is far too short. If you take land seriously, keep learning, and don't let ankle biters discourage you. Freedom is important for a homestead or farm, and not every district agrees.
I will tell you of a serious problem few speak of... Sludge(1). It has been used all over the country, especially in Florida. It can have permanently disastrous effects on soil, replete with your 'forever' chemicals and such. I advise looking into that before buying, if you want organic. A lot of prospective farmers buy land, then have it tested, and discover Sludge has rendered it unfit for even conventional farming.
1. (bio-solids, along with everything ever flushed down a toilet or run down a sewer or drain, and then some)
I suspect you didn't do much digging into the content before posting since 3/5 of the things you mentioned are already there and easy to locate.
Precipitation - Select one of the properties to view. In the right sidebar the listing should appear. In that sidebar there is a heading "Water Security" so select that. The first item in that list is the expected annual precipitation.
Elevation - Select one of the properties to view. It will appear on the right sidebar. The main listing block includes the property elevation, in meters, and maximum relief in meters. Under the "Parcel Report" you can find the slope, probably an average value, in percent. Just below that information you find the nearest major road distance, in miles.
With those notes, it feels like there is room here for a units toggle to select metric or American. Mix and match just feels like I'm selecting wrenches while working on a late 90's vehicle. Use the one that fits best.
Property Taxes are mentioned in the "Diligence Documents" drop-down at the bottom of the list.
In a different comment I suggested they include sunlight data so that people could determine suitability for solar installs especially for rural sites that are not close to grid power.