Cost Per Square Foot: Difference between revisions
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=Materials= | =Materials= | ||
*{{check}}basic 4x9 module in 2x6 - $6 for a 9' precut. [https://www.menards.com/main/building-materials/lumber-boards/dimensional-lumber/2-x-6-pre-cut-stud-construction-framing-lumber/1021334/p-1449804844260-c-13125.htm]. Framing only is $30/ module. | *{{check}}basic 4x9 module in 2x6 - $6 for a 9' precut. [https://www.menards.com/main/building-materials/lumber-boards/dimensional-lumber/2-x-6-pre-cut-stud-construction-framing-lumber/1021334/p-1449804844260-c-13125.htm]. Framing only is $30/ module. | ||
*Metal Roofing - $1/sf - this is 60 sf - [https://www.menards.com/main/skusummary.html?primaryMeas=240.0&secondaryMeas=36.0&pid=1444448586926&cid=5717]. Up to 36' lengths. | *Metal Roofing - $1/sf - this is 60 sf - [https://www.menards.com/main/skusummary.html?primaryMeas=240.0&secondaryMeas=36.0&pid=1444448586926&cid=5717]. Up to 36' lengths. 29 gauge [[Metal Gauge]], 40 year life. Note: [[Steel Coil]] is $1.7/sf for 24 gauge material, almost 2x weight, so cost is the same as coil. | ||
*SIPs - $9/sf for R16. See [[SIP Panel Cost]] | *SIPs - $9/sf for R16. See [[SIP Panel Cost]] | ||
*[[PV Panel Cost]] - $3.4/sf | *[[PV Panel Cost]] - $3.4/sf | ||
*{{check}}Drywall - $10/sheet, 44 lb [https://www.menards.com/main/building-materials/drywall/drywall-sheets/1-2-x-4-x-8-lightweight-drywall/1311223/p-1444421962026-c-5656.htm]. Exterior drywall also exists at $5 more per sheet. | *{{check}}Drywall - $10/sheet, 44 lb [https://www.menards.com/main/building-materials/drywall/drywall-sheets/1-2-x-4-x-8-lightweight-drywall/1311223/p-1444421962026-c-5656.htm]. Exterior drywall also exists at $5 more per sheet. | ||
*{{check}}OSB - 7/16" - $15 [https://www.menards.com/main/building-materials/panel-products/osb-sheathing/7-16-x-4-x-8-osb/1242728-2/p-1444422471192-c-13330.htm] | *{{check}}OSB - 7/16" - $15 [https://www.menards.com/main/building-materials/panel-products/osb-sheathing/7-16-x-4-x-8-osb/1242728-2/p-1444422471192-c-13330.htm]. 3/4" - $25 [https://www.menards.com/main/building-materials/panel-products/osb-sheathing/3-4-x-4-x-8-square-edge-osb/1242854/p-1444422514105-c-13330.htm?exp=false] | ||
*Rebar - 35 c/ft [https://www.menards.com/main/building-materials/concrete-cement-masonry/rebar-remesh/1-2-x-20-rebar-grade-60-4/1831113/p-1444449833621-c-12502.htm] | *[[Rebar]] - 35 c/ft [https://www.menards.com/main/building-materials/concrete-cement-masonry/rebar-remesh/1-2-x-20-rebar-grade-60-4/1831113/p-1444449833621-c-12502.htm]. 20 foot sticks weigh 13 lb, at about $7 each | ||
*{{check}}basic 4x9 module in 2x6 - $6 for a 9' precut. [https://www.menards.com/main/building-materials/lumber-boards/dimensional-lumber/2-x-6-pre-cut-stud-construction-framing-lumber/1021334/p-1449804844260-c-13125.htm]. Framing only is $30/ module. | *{{check}}basic 4x9 module in 2x6 - $6 for a 9' precut. [https://www.menards.com/main/building-materials/lumber-boards/dimensional-lumber/2-x-6-pre-cut-stud-construction-framing-lumber/1021334/p-1449804844260-c-13125.htm]. Framing only is $30/ module. | ||
*Insulation R21 - $0.63/sf [https://www.menards.com/main/building-materials/insulation/insulation-rolls-batts/r-19-ecoroll-reg-kraft-faced-fiberglass-insulation-roll-15-x-39-2/817231/p-1444437001920-c-5780.htm]. Insulation R11 - 33 c/sf [https://www.menards.com/main/building-materials/insulation/insulation-rolls-batts/r-11-ecoroll-reg-kraft-faced-fiberglass-insulation-roll-15-x-40/817228/p-1444436999588-c-5780.htm] | *Insulation R21 - $0.63/sf [https://www.menards.com/main/building-materials/insulation/insulation-rolls-batts/r-19-ecoroll-reg-kraft-faced-fiberglass-insulation-roll-15-x-39-2/817231/p-1444437001920-c-5780.htm]. Insulation R11 - 33 c/sf [https://www.menards.com/main/building-materials/insulation/insulation-rolls-batts/r-11-ecoroll-reg-kraft-faced-fiberglass-insulation-roll-15-x-40/817228/p-1444436999588-c-5780.htm] | ||
*Coil is $500/ton from China [https://www.alibaba.com/pla/Hot-Gi-Dip-Electro-Hanging-Plating_1600400015681.html?mark=google_shopping&biz=pla&searchText=galvanized+steel+products&product_id=1600400015681&pcy=US&material=H63563ee980b84c7fbc14acbd2482ddeaA.jpg&src=sem_ggl&field=UG&from=sem_ggl&cmpgn=20752788451&adgrp=156945387962&fditm=&tgt=pla-294505072980&locintrst=&locphyscl=1020590&mtchtyp=&ntwrk=g&device=c&dvcmdl=&creative=679753859671&plcmnt=&plcmntcat=&aceid=&position=&gad_source=1&gclid=CjwKCAjw4_K0BhBsEiwAfVVZ_1LAFxtKed3bKMCIBaEj9EXpbsgoiar80I76kVcB8PvOevEsxaJIVRoC29EQAvD_BwE]. If weight is 0.5 lb/sf - then this is $500/4000 sf. Ridiculously low price of 12.5 c/sf | *Coil is $500/ton from China [https://www.alibaba.com/pla/Hot-Gi-Dip-Electro-Hanging-Plating_1600400015681.html?mark=google_shopping&biz=pla&searchText=galvanized+steel+products&product_id=1600400015681&pcy=US&material=H63563ee980b84c7fbc14acbd2482ddeaA.jpg&src=sem_ggl&field=UG&from=sem_ggl&cmpgn=20752788451&adgrp=156945387962&fditm=&tgt=pla-294505072980&locintrst=&locphyscl=1020590&mtchtyp=&ntwrk=g&device=c&dvcmdl=&creative=679753859671&plcmnt=&plcmntcat=&aceid=&position=&gad_source=1&gclid=CjwKCAjw4_K0BhBsEiwAfVVZ_1LAFxtKed3bKMCIBaEj9EXpbsgoiar80I76kVcB8PvOevEsxaJIVRoC29EQAvD_BwE]. If weight is 0.5 lb/sf - then this is $500/4000 sf. Ridiculously low price of 12.5 c/sf | ||
*Hot rolled coil at $1k/ton [https://www.thefabricator.com/thefabricator/blog/metalsmaterials/historically-high-steel-prices-appearing-more-regularly]- 25 cents/sf at the [[30 Gauge]] thickness. | *Hot rolled coil at $1k/ton [https://www.thefabricator.com/thefabricator/blog/metalsmaterials/historically-high-steel-prices-appearing-more-regularly]- 25 cents/sf at the [[30 Gauge]] thickness. | ||
*2x6x16 roof section, 2' center, can be doubled up. Fastest build model. $11/sf [https://www2.menards.com/main/building-materials/lumber-boards/dimensional-lumber/2-x-6-construction-framing-lumber/1021790/p-1444422746041-c-13125.htm]. 16x16 roof section for | *{{check}}2x6x16 roof section, 2' center, can be doubled up. Fastest build model. $11/sf [https://www2.menards.com/main/building-materials/lumber-boards/dimensional-lumber/2-x-6-construction-framing-lumber/1021790/p-1444422746041-c-13125.htm]. 16x16 roof section for $121. 320 lb - so must break it into 2 and also thereby make it transportable. | ||
*45 mil EPDM - $1/sf [https://www2.menards.com/main/building-materials/roofing/low-slope-roofing/epdm-rubber-roofing-45-mil/1519040/p-1642874302869830-c-5821.htm] | *45 mil EPDM - $1/sf [https://www2.menards.com/main/building-materials/roofing/low-slope-roofing/epdm-rubber-roofing-45-mil/1519040/p-1642874302869830-c-5821.htm] | ||
*House Wrap - 15 cents/sf [https://www.menards.com/main/building-materials/siding/house-wrap/kimberly-clark-block-it-reg-house-wrap/1612999/p-1444453630065-c-13381.htm] | |||
=About in Housing= | =About in Housing= | ||
Latest revision as of 19:40, 22 July 2024
Materials
basic 4x9 module in 2x6 - $6 for a 9' precut. [1]. Framing only is $30/ module.- Metal Roofing - $1/sf - this is 60 sf - [2]. Up to 36' lengths. 29 gauge Metal Gauge, 40 year life. Note: Steel Coil is $1.7/sf for 24 gauge material, almost 2x weight, so cost is the same as coil.
- SIPs - $9/sf for R16. See SIP Panel Cost
- PV Panel Cost - $3.4/sf
- Drywall - $10/sheet, 44 lb [3]. Exterior drywall also exists at $5 more per sheet.
- OSB - 7/16" - $15 [4]. 3/4" - $25 [5]
- Rebar - 35 c/ft [6]. 20 foot sticks weigh 13 lb, at about $7 each
- basic 4x9 module in 2x6 - $6 for a 9' precut. [7]. Framing only is $30/ module.
- Insulation R21 - $0.63/sf [8]. Insulation R11 - 33 c/sf [9]
- Coil is $500/ton from China [10]. If weight is 0.5 lb/sf - then this is $500/4000 sf. Ridiculously low price of 12.5 c/sf
- Hot rolled coil at $1k/ton [11]- 25 cents/sf at the 30 Gauge thickness.
- 2x6x16 roof section, 2' center, can be doubled up. Fastest build model. $11/sf [12]. 16x16 roof section for $121. 320 lb - so must break it into 2 and also thereby make it transportable.
- 45 mil EPDM - $1/sf [13]
- House Wrap - 15 cents/sf [14]
![[10]](https://www.alibaba.com/pla/Hot-Gi-Dip-Electro-Hanging-Plating_1600400015681.html?mark=google_shopping&biz=pla&searchText=galvanized+steel+products&product_id=1600400015681&pcy=US&material=H63563ee980b84c7fbc14acbd2482ddeaA.jpg&src=sem_ggl&field=UG&from=sem_ggl&cmpgn=20752788451&adgrp=156945387962&fditm=&tgt=pla-294505072980&locintrst=&locphyscl=1020590&mtchtyp=&ntwrk=g&device=c&dvcmdl=&creative=679753859671&plcmnt=&plcmntcat=&aceid=&position=&gad_source=1&gclid=CjwKCAjw4_K0BhBsEiwAfVVZ_1LAFxtKed3bKMCIBaEj9EXpbsgoiar80I76kVcB8PvOevEsxaJIVRoC29EQAvD_BwE){kind=link}
About in Housing
Summary: cost per square foot is largely meaningless. You don't know what it means until you consider:
- Does it include builder's profit?
- Does it include livable space only? (or other such as garage or porch)
- Does it include basement?
- To compare house costs properly to the OSE/OBI Seed Eco-Home, we consider new construction (median used homes are $120k lower cost [15])
- Measured for livable space (cost to build the complete home / sf of livable space only) only as the claimed industry standard of measuring cost of a home. Thus, a large garage and porch or upscale interior finish drive the cost up [16]. Does not include land.
- Average USA cost is $150 builder grade [17]. But this figure is different than the industry standard cost method - here they don't include land NOR non-livable space such as garage. Thus, the Forbes definition is not the standard definition.
- Median is more useful with nonsymmetric distributions, such as ones skewed by high cost outliers such as housing. [18]. The average is higher, median is the average Joe price.
- Average sale price of a new home USA is $487K, median is $416k [19]. Or about $190-$220/sf.
- If average cost to build a house is $280k [20], then land + legal is $200k.
- Median sf is 2300
- There are 6 classes of house quality. Lowest cost is $60/sf build cost. Highest is $500/sf (luxury) [21]
- Cob homes are the lowest cost to build, but highest cost to buy [22]. Build cost is way off - it doesn't include any MEP.
- Summary: average cost to build a new home $300k (land not included), to buy $500k [23]. Detailed breakdown of the $500k by NAHB for what appears to be builder grade - [24]
- OSE Value Summary: OSE build cost is $60k materials + $25k labor) for an entry-level, high quality home - $85k or $65/sf for the 1300 sf 3 bed/2 bath model, compared to the $114/sf NAHB survey average (2600 sf). The OSE cost does not include land, site prep, legal, design & engineering, overhead, profit, financing, marketing, sales, or any other fees. The NAHB cost does not include land, site prep, overhead, profit, financing, marketing, sales but does include permit, impact, engineering & design fees.