Chort lA 



vary in different towns. 



In the chart, a 2000 sq. ft. green 

 house made of good aluminum or gal- 

 vanized steel is evaluated at S 1 7.25/sq. 

 ft. This is the national average. To find 

 its value in the eastern region, you 

 would multiply $17.25 by 1.05. This 

 gives you $18.11. For the state of New 

 Hampshire,youwouldmultiply$18.11 

 by 1 .01. This gives you $18.29. This is 

 your valuation ^ — according to Marshall 

 & Swift. 



There is a significant cost range 

 for heating and ventilating systems 

 which provides the assessor with a great 

 deal of latitude in determining values. 

 Considerations are made for type of 

 furnace (hot water, steam, gas, hot air, 

 suspended space heaters) and BTU ca- 

 pacity. Unit costs, such as an exhaust 

 fan cooling assembly will range from 

 $525.00 to $1,050.00, automauc vent 

 and/or environmental controls from 



with Marshall & Swift. 



They consider a typical greenhouse 

 being constnicted of wood, pipe, or 

 steel with a 20 ft. to 30 ft. span, with 



5 30% 



6-7 35% 



8-9 40% 



10-11 45% 



12-13 50% 



14-15 55% 



16-17 60% 



18-19 65% 



20-21 70% 



Over 75% 



Final Comments 



Growers should become familiar 

 in their individual towns as to methods 

 followed in evaluation because guide- 

 lines and ranges allow for subjectivity 

 and discussion between assessor and 



light masonry or frame sill walls 3 ft. 

 high. It includes sash upper walls, 

 concrete footing, and continuous ridge 

 ventilators. The cost of the heating 

 system and benches is calculated sepa- 

 rately. If the greenhouse is covered- 



MISCEliANEOUS SQUARE FOOT COSTS 



Gravel Asphalt 



Floors or walks $.28 to $.40 $1.00 to $1.30 



Concrete 



$1.40 to $2.35 



Plastic 



Planting benches $2.00 to $3.00 



Wood Slat Solid Propagating 



$2.75 to $3.25 $3.25 to $4.75 



Spray Mist 



Water System, plastic $.06 to $. 1 1 $. 1 1 to $. 1 f 



Driptube 



$.18 to $.23 



$525.00 to $1,025.00, or automauc 

 water controls from $ 1 60.00 to $375.00. 

 Miscellaneous square foot costs 

 include floors, planting benches, and 

 watering systems. 



Colar & Trumble Evaluation 

 Some town assessors use Colar & 

 Trumble, Massachusetts. Their crite- 

 ria is less comprehensive and their cost 

 figures are about half when compared 



with plastic, the cost per square foot is 

 reduced by 30%. 



Colar & Trumble uses the follow- 

 ing readjustment values based on age. 



Age in Years : Depreciation 



0-1 10% 



2 15% 



3 20% 



4 25% 



19 



taxpayer. Knowing the right questions 

 to ask may be quite important. Being 

 realistic, the independent nature of 

 towns will prevent consistency in as- 

 sessment on a statewide basis. 



Appreciation is expressed to 

 Marshall & Swift, Bridgewater, New 

 Jersey for granting special permission 

 to use its evaluation information in this 

 article. 4k 



David C. Seavey 



Extension Educator, Agriculture 



UNH Cooperative Extension 



Editorial comment: 

 {The information in this article seems to 

 have attracted a lot of interest and The 

 Plantsman would welcome any com- 

 ments from its readers. We hope to 

 publish some of these in upcoming is- 

 sues. Please send your comments to 

 Bob Parker, Box 5, Newfields. NH 

 03856.) 



