One of the best ways to do this is by using Google Earth (which is free) and the topography map from Earth Point (which is also free). With Google Earth, you can search for your property (using the address or coordinates) and zoom in using your mouse buttons and the control/command and shift keys on your keyboard. This will allow you to tilt the earth so you can see precisely where all the hills and valleys are in your area.
This question is out of my realm...but I'm curious why you decided that the current developer is not interested in your property? If his equipment is close... it might not be that hard to deal with your property. Since you already have a house on it, I can assume there's sewage, water, electricity, etc... So your land doesn't need to really be developed, but they could build something nice on it.
First, find experienced professional advisers. Arranging the deal yourself to avoid fees is almost certainly a false economy. An experienced agent, a solicitor and importantly, an accountant, are all essential before any sale negotiations are begun. Developers will have strict criteria for the land they wish to purchase in order to maximise their own profits, so obtaining the correct advice at the start will help ensure you can offer land for sale in the most appealing way to the developer and lucrative way for yourself.
Comparables for land can be trickier than for home sales in your area. Although the assessor's valuation on your taxes can provide a starting point, consider factors like whether your property has utilities to the property line, views, zoning and any preapproved building plans to determine its worth. Location is always one of the most critical factors. In San Francisco's Pacific Heights area, for example, a buildable cul-de-sac lot of less than 4,000 square feet can sell for more than $9 million.
We’re considering selling our 103-year-old home, which is located in a multi-use zone where condos and townhomes have been going up, changing the entire neighborhood landscape. We’ve been getting purchase inquiries from developers and are wondering if we should sell to them directly or through an agent. How do we assess a reasonable price? By the way, our home needs updates in electrical, plumbing, HVAC, paint, appliances and flooring.
The modern real estate housing market fluctuates on a daily basis. While houses typically sell quickly, most vacant land parcels are stagnant and can be difficult to sell. Land owners can find it nearly impossible to sell their land. You will more than likely have possession of your property for a long time and continue to pay the real estate taxes while you own it.
Settle on a price that is acceptable to both parties. But don’t exceed the price you initially set as your maximum amount to pay. No property is worth paying more than you can afford. "Decide what a transaction is worth to you. A property may be worth more in value to you than the actual appraisal. Take the emotion out of it and deal with it in terms of dollars and sense," confers King. And, "don't be afraid to walk away from a deal, just do so with a handshake and a smile and do not burn that bridge."
Consider your own needs when pricing, and understand how pricing could impact buyers’ interest. When selling real estate, you sometimes have to choose between getting the highest price and possibly selling quicker. Plus, your pricing may be influenced if you need to sell for financial reasons. In addition to your own situation, pricing your property ultimately requires an understanding of the land market as a whole, why people are buying lots or land in that area and who these people are. A good real estate agent with land expertise can help greatly in this process.