Saving farmland and other open space lands from development makes environmental and economic sense.

Add up the "hidden costs" of sprawl — the additional schools, roads, and fire, police, and trash services needed by new residents. You may be surprised to learn that, in many cases, residential development costs you — the taxpayer — more than buying the land and keeping it as open space.

The example below demonstrates that preserving a hypothetical farm in central Bucks County could save taxpayers hundreds of thousands of dollars per year. The approach used in the example was devised by Mike Frank of Heritage Conservancy and looks only at increased school taxes due to new development.





The analysis is as follows:

  • Honey Hill Farm is for sale. This 100-acre farm is located in an area of the municipality zoned for one house per acre. If the farm is sold to a developer, it is reasonable to expect that 85 new homes might be constructed (reserving some land for streets and steep slopes).


  • Assuming there are 0.83 public school students per home (using 1997 estimates from the Central Bucks County School District), the new development would add 70.55 new public school students. (85 x 0.83 = 70.55)


  • If it costs $8,615/year to educate a public school student (again using 1997 figures from the Central Bucks County School District), the total cost for 70.55 students would be $607,788. The school tax revenues for the 85 homes, at an average of $2,913 generated per year (same source), would be $247,605.

  • The cost to the community of allowing the farm to be developed thus would be $360,183 per year. ($607,788 costs - $247,605 revenues = $360,183 costs) That is, taxpayers will have to pay over $360,000 in extra taxes each year just for this one development!


  • Note too that this shortfall is an ongoing, permanent expense that will tend to increase over time as education costs escalate. Nor does this $360,000 shortfall even reflect future capital costs (such as new school construction, upgraded roads, sewerage or water treatment facilities) or increased municipal costs (such as more fire, police, and trash services that new residents will demand). Taxes will need to rise even more to cover these costs of development.



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    Alternatively, the community could choose to purchase a conservation easement on Honey Hill Farm. Assuming an average cost per acre of $12,933 for the 100-acre easement (easement and fee simple costs derived from 1998 appraisals performed for the Bucks County Agricultural Lands Preservation Board), the purchase price would be $1,293,300. This means that it would take the community only 3.59 years to break even. ($1,293,300÷ $360,183/year = 3.59 years).

    Buying the farm outright rather than placing a conservation easement on it also would save the community money in the example above, but it would take slightly longer to break even on the purchase (4.58 years, assuming a fee simple sale price of $16,500 per acre.) Easements are less expensive because not all of the ownership rights are being acquired.

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