Sips Building Technologies, supplying the technology for the Manufactureing of Structurally Insulated Building Systems (Sips) Homes and Commercial Buildings
 
     
     
 
 
 
     
 
     
 
         

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ENERGY EFFICIENCY UPGRADES
INCREASE MARKET VALUE OF HOMES

Evidence of Rational Market Values for Home Energy Efficiency, Rick Nevin and Gregory Watson, Appraisal Journal, October 1998.
(Adobe Acrobat Format) This study demonstrates the increased value of energy-efficient homes, assigning estimated incremental home value.

"More Evidence of Rational Market Values for Home Energy Efficiency" Appraisal Journal, October 1999

     
 
  The advantages of an We LLC Home are:  
 
  • Insect and Mold Resistant
  • High Energy Efficiency Components
  • Increased Resale Values
  • Decreased Building Time
  • A True Green Product
  • Decreased Mortgage & Payment Rates
  • Potential Energy Tax Credits
  • Reduced Energy Costs
  • Increased Life Expectancy of Building
  • High Wind Load Survivability
  • Reduced Thermal Loss
  • Reduced Insurance Rates
 
     
     
 
     

A  peer-reviewed study published in The Appraisal Journal shows that homebuyers are willing to pay substantially more for energy-efficient homes. This study, titled "Evidence of Rational Market Values for Home Energy Efficiency," concludes that people are willing to fully pay for the monthly fuel savings of energy efficient homes with higher monthly mortgage payments" which translate into higher home values. Thus, homebuilders and homeowners who invest in energy efficiency can expect to recover the market value of their energy efficiency investments when they sell their homes.

The ICF study reviews published research on energy efficiency and home values, and presents an extensive statistical analysis of American Housing Survey (AHS) data. The published research shows that market values for energy efficient homes appear to reflect a rational trade-off between homebuyers' fuel savings and their after-tax mortgage interest costs. The ICF statistical analysis explicitly tests this "rational market hypothesis" against National AHS data for 1991, 1993, and 1995, and metropolitan statistical area data for 1992 through 1996. Both of these distinct AHS samples provide data on home characteristics (including home value, number of rooms, square feet, lot size, and utility bills) as reported by homeowners in lengthy interviews with the Census Bureau. The study presents separate statistical results for each year, for detached and attached homes, and for detached housing with different heating fuels (gas, electric, or fuel oil).

These statistical results support the conclusion  "That home value increases by $20 for every $1 reduction in annual utility bills", consistent with after-tax mortgage interest rates of about five percent from 1991 through 1996.

This research was conducted for the U.S. Environmental Protection Agency (EPA) ENERGY STAR® Homes program. ENERGY STAR® homes use at least 30% less energy than a Model Energy Code home while maintaining or improving indoor air quality and increasing comfort in the home. EPA estimates that the cost to upgrade a new home to ENERGY STAR® levels can range from $2,000 to $4,000, and that a typical ENERGY STAR® home reduces utility bills by $420 per year. The ICF study indicates that $420 in annual utility savings will add about $8,400 to the market value of an ENERGY STAR® home (or to any equally efficient home), or two to four times the builder's upgrade costs.

The study should also encourage homeowners to consider energy efficiency upgrades for existing homes. An important conclusion from this research is that homeowners "can profit by investing in energy efficient homes even if they are uncertain about how long they might stay in the home. If their reduction in monthly fuel bills exceeds the after-tax mortgage interest paid to finance energy efficiency investments, then they will enjoy positive cash flow for as long as they live in their home and can also expect to recover their investment in energy efficiency when they sell their home." This research also has significant implications for home appraisers, mortgage lenders, and housing assistance programs at the federal, state, and local levels.

 

Written by: The Appraisal Journal by Rick Nevin and Gregory Watson :

Evidence of Rational Market Values for Home Energy Efficiency, Rick Nevin and Gregory Watson, Appraisal Journal, October 1998.
(Adobe Acrobat Format) This study demonstrates the increased value of energy-efficient homes, assigning estimated incremental home value.

"More Evidence of Rational Market Values for Home Energy Efficiency" Appraisal Journal, October 1999


 
     
 
 
 
     
 

How much more would your conventional stick built home be worth if it was an "We LLC" manufactured SIPs home product.

 
     
 

Using a 2,000 square foot home constructed by We Et. al., which has an average heating/cooling bill of $35.00 a month; and a similar size traditional built stick built home with an average heating/cooling bill of $145.00 a month, you save $110.00 a month in energy costs; or an overall savings of $1,320.00 a year in energy costs.

 
     
 

Using the criteria in the U.S. Environmental Protection Agency (EPA) report which was published in the Appraisal Journal, you take the $20 for every $1 reduction in annual utility bills and multiply it by $1,320.00 and you get an increased home resale value of $26,400.00If you saved even more in energy savings in a year, the resale value of your home will do nothing but increase.

"Doesn't it make sense to maximize the value of your single largest asset"

 
     
 

Give us a call at 1-928-717-9702 to see if we can help you make an additional $26,400.00 or more when you sale your home, and let you save several thousand dollars a year in energy cost while you own it.

 
     
     
   
 

 

 
 
 
        It's not that the builder is intentionally misleading his client or associate, but that he's just following common practice. In reality, this reasoning doesn't take into account all the other components that go into making a wall: wood or steel studs every 16" or 24", bracing, nails or screws, wiring and switch boxes - any number of things that are not insulation, and in all likelihood, have R-values that fall well short of the stated R-24.


        A new study by the Oak Ridge National Labs (ORNL) proves that a 4-inch SIP wall outperforms 2"x4" stick and batt construction, and even edges out 2"x6" construction in terms of thermal performance. Because SIPs are the structural elements, there are no studs or braces to cause breaks in the insulative action. The end result is a more comfortable, energy efficient structure that performs up to spec in real-world conditions. Unlike stick and batt construction, which can be subject to poorly installed - even missing - insulation, the nature of SIPs is such that the structural and insulative elements are joined as one. There are no hidden gaps, because a solid layer of foam insulation is integral to panel construction.
 

         By contrast, state-of-the-art technical analysis of whole wall performance indicates that the losses in a stud wall are much greater than you might think: on average, the other standard components in stick and batt construction can reduce R-values in as much as 30% of the wall area. Fortunately, that's not the case with structural insulated panels. The ORNL study found that SIPs perform at approximately 97% of their stated R-value overall, losing only 3% to nail holes, seams, splines, and the like. Wiring chases are precut or preformed into the foam core, providing a continuous layer of insulation keeping the elements at bay and the interior free of drafts and cold spots.

        A SIP wall also outperforms stick and batt when it comes to maintaining consistent interior temperatures, and that translates to improved occupant comfort. As shown in the graph below, the interior surface temperature of frame construction drops precipitously at every stud, while the SIP wall remains consistent across its entire surface. No temperature dips mean improved occupant comfort, regardless of where you are in the room. That's a big part of what people are talking about when they say they can immediately "feel the difference" in a SIP-built residential or commercial space. With SIPs, thermal efficiency and comfort are built in at the factory, and now the lab results prove it.

         Interior surface temperature comparisons indicating constant temperature for SIP wall and reductions in temperature at stud locations for 2"x 4' and 2" x 6" wood frame walls (ORNL).

 
 
 

 

 
 
 
     R-Values of EPS Core SIPs  (Calculated R-Values) 

R-Values of EPS Core SIPs

EPS Core Thickness

3 5/8”

5 5/8”

7 3/8”

9 3/8”

12 3/8”

R-Value @ 75° F

15.34

23.04

29.77

40.36

49.02

@ 40° F

16.57

26.26

32.28

43.80

53.23

@ 25° F

17.15

27.16

33.46

45.42

55.21

     Calculated R-Values are for a generic We Structural Insulated Panel, using  Type I, Expanded Polystyrene Foam that meets ASTM C – 578, calculated per ASHRAE published values at 3.85 per inch at 75° F, 4.19 at 40° F and 4.35 at 25°. 

     Mean temperatures are established for differing regions, and occupancies.  Please consult your local jurisdiction for interpretation of Regional or National Model Energy Code Requirements.

     A one-inch increase in wall insulation increased home value by $1.90 per square foot; a one-inch increase in ceiling insulation increased home value by $3.37 per square foot. High quality (energy-efficient windows) increased home value by $1.63 per square foot. (Corgel, Goebel, and Wade. "Measuring Energy Efficiency for Selection and Adjustment of Comparable Sales." The Appraisal Journal, 1982, pp 71-78.)

 

 
 
 

 

 
 
 

     Higher Resale Value

Studies conducted since the early 1970's have consistently concluded that energy-efficient homes earn a higher resale price than average homes. This means that purchasing an ENERGY STAR qualified new home isn't just a smart investment today, but it will also pay significant dividends in the future.
 

Time Period Key Finding on Increased Value
1970-75 The 1974 spike in relative cost of fuel oil raised the price differential between gas- and oil-heated houses to $761 in 1974 and up to $4,597 in the first half of 1975.
1971-78 A one-inch increase in wall insulation increased home value by $1.90 per square foot; a one-inch increase in ceiling insulation increased home value by $3.37 per square foot. High quality (energy-efficient windows) increased home value by $1.63 per square foot. (Corgel, Goebel, and Wade. "Measuring Energy Efficiency for Selection and Adjustment of Comparable Sales." The Appraisal Journal, 1982, pp 71-78.)
1978 Home value increased by about $20.73 for every $1.00 decrease in annual fuel bills.
1978-79 Value of energy-efficient homes (with lower structural heat loss) was $3,248 higher than inefficient homes.
1980 Home value increased by $2,510 for each one unit increase in energy efficiency.
1982 Home value increased by $11.63 per $1.00 decrease in fuel expenditures needed to maintain a house at 65o F in an average heating season.
1983-85 Home value increased by $12.52 per $1.00 decrease in electric bills, consistent with home buyers discounting savings at after-tax mortgage interest rate.

1 Halvorsen and Pollakowski. "The Effect of Fuel Prices on House Prices." Urban Studies, Vol. 18, No. 2, 1981, pp. 205-211.

2 Corgel, Goebel, and Wade. "Measuring Energy Efficiency for Selection and Adjustment of Comparable Sales." The Appraisal Journal, 1982, pp 71-78.

3 son and Kaserman. "Housing Market Capitalization of Energy-Saving Durable Good Investments." Economic Inquiry, Vol. XXI, July 1983, pp. 374-386.

4 Laquatra. "Housing Market Capitalization of Thermal Integrity." Energy Economics, Vol. 8, No. 3, 1986, pp.134-138.

5 Longstreth. "Impact of Consumers' Personal Characteristics on Hedonic Prices of Conserving Durables." Energy, Vol. 11, No. 9, 1986, pp. 893-905.

6 Dinan and Miranowski. "Estimating the Implicit Price of Energy Efficiency Improvements in the Residential Housing Market: a Hedonic Approach." Journal of Urban Economics, No. 25, 1986, pp. 52-67.

7 Horowitz and Haeri. "Economic Efficiency versus Energy Efficiency." Energy Economics, April 1990, pp. 122-131.


 

 
 
 

 

 
 
     
     
     
 
 

 

 
 

 

 
 
     
 
 

 

 
 
     
   
     

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Sips Home Manufacturers.. Sips Homes for sale.. SIPs Buildings for sale,

 
     
 
     
   
     
 
     
 

11-6-07

 
     
 
     
     
     
  Are Structural Insulated Panels More Expensive? ~ Building with SIPs generally costs about the same as Building with wood frame construction, when you factor in the labor savings resulting from shorter construction time and less job-site waste.  Other savings are realized because less expensive heating and cooling systems are required with SIP construction.  
     
  SIPs Homes Out Perform Traditional "Stick Built"  ~  SIP Buildings are vastly more energy efficient, stronger, quieter, and more draft free than other Building systems, such as stud framing with fiberglass insulation. Fiberglass is sometimes used for furnace filters because air moves through so freely. Rigid insulation is used as solid component insulation in almost every industry for its inherent efficiency and lack of air movement. These attributes are built right into a SIP Building. Less air leakage means fewer drafts, less noise, lower energy bills, and a much more comfortable indoor environment.  
Save construction time and "MONEY" on your "CONSTRUCTION LOANS"  ~ SIPs Homes construction also saves costly labor hours. A project using stick frame construction may take several weeks with a 4-person crew, but will take as little as 3 days, with the same crew, using our SIPs Homes system. What makes SIPs even better is the wire chases which are factory milled in the EPS (Expanded Poly Styrene) insulation, so wiring is as easy as just fishing the wiring through.  Insulation costs and installation are also a thing of the past; the EPS (Expanded PolyStyrene) replaces the normal insulation and gives a better long-wall insulating value and performance with minimal thermal drift.
 
Some of the advantages of a We Home are:
 
  • Insect and Mold Resistant
  • High Energy Efficiency Components
  • Increased Home Resale Values
  • Decreased Building Time
  • A True Green Product
  • Decreased Mortgage & Payment Rates
  • Potential Energy Tax Credits
  • Reduced Energy Costs
  • Increased Life Expectancy of Building
  • High Wind Load Survivability
  • Reduced Thermal Loss
  • Reduced Insurance Rates
  • Higher Overall Resale Value
  • Reduced Costs For Heating and Cooling Equipment
 
 
     
 

 
     
 

 
     
     
     
 
 
 

 

     
 
 
 
     
 
     
 
     
 
 
 

 

 

 

 
     
 
     
 
     
 
 
 
     
 
     
     
     
 
     
 
 
     
 
     
 
 

Real Estate Financing Available in: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine,  Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas,  Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

 

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