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Zero Energy House Case Study

Guadalupe-Saldaña Net Zero Subdivision, TX
Picture
Rendered Image, by Travis G. Young, Studio Momentum
The project is the first 100% affordable housing, net-zero energy community project in the State of Texas, possibly the nation. A total of 90 homes including single-family, two-family, and town home dwellings will be developed. The units will range in size from 650 sq. ft. (one bedroom, one bath) to 2000 sq. ft. (five bedrooms, 2.5 baths). Every unit on this property will be affordable at 80% or below MFI for homeowners and at 60% or below MFI for renters.
Picture
General Information
Owner: Guadalupe-Saldana Affordable Homes, L.P. & Guadalupe Neighborhood Development Corp.
Developer: Guadalupe Neighborhood Development Corp.
Architects: Hatch, uLLAND & Owen, Nelson Partners, Hailey Group, Chris Krager (KRDB), Travis Young (Momentum Studio), Tom Hatch (H+UO Architects), Rvi Planning + Landscape Architecture for the landscape design

Detailed information of the design team
Travis Young, AIA, ACDDC developed preliminary site designs for the project

Solar Energy System Provider: 
Austin Energy, has provided support towards the goal of net-zero energy for the 60 homes in the multi-family site.
Energy Modeling: Adam Pyrek Architects
Energy Rater: Green Zone Homes
Project Completion Time: 
Development Profile: Rental and ownership housing; acquisition and new construction

Total Housing Units: 90
Single family zone: 
- zone size: parcel 1126 of 4 acre, 
- unit composition: 30 single family home

Multi family zone: 
- zone size: 7 acre, 
- unit composition: 10 single-family unit, 26 two-family (duplex) unit with 12 of them stacked units, 24 townhouse type unit

Affordability: 
58 units at 80% median family income or less, 
7 units at 60% median family income or less, 
25 units at 50% median family income or less

Location: Tillery Street & Goodwin Ave, Austin, TX 78702
guadalupe_saldana_subdivision2009.pdf
File Size: 915 kb
File Type: pdf
Download File

2010.pdf
File Size: 2388 kb
File Type: pdf
Download File

Site: 
The subdivision located on a previous brown field used for waste disposal. Upon this condition, one of the consideration in site planing is to effectively use the available site, maximizing the solar panel exposure while minimizing the solar heat gain.

Net Zero Related Techniques:
- Design
- Mechanical System
  Space cooling / heating: Geothermal heat pump
Water heating: solar thermal
-Material
Insulation: Open-cell spray foam insulation
-Construction

Phase I project:
This phase consists of 4 building structures of 8 rental units.
Source of this file: http://austintexas.gov/department/guadalupe-saldana-subdivision

Other related websites:
http://www.jonescarter.com/projects/sitedevelopment/Guadalupe.html
http://austintexas.gov/department/guadalupe-saldana-subdivision
Related Newspaper Article: 
- Field Notes: Net-Zero Energy Subdivision sets precedent in Austin, Texas (http://blog.enterprisecommunity.com/2013/09/field-notes-net-zero-energy-subdivision-sets-precedent-in-austin-texas)

General Information: http://www.guadalupendc.org/?page_id=93 (need to look into in more detail)
Sustainable Related Cost (from 2009 file)
Geo-technical (soil): $22,000
Sustainable Design: $16,500
Energy Modeling: $24,672
Ecological Planning: $21,000
HERS Rater: $15,000
Environmental Review: $131,991
Survey: $6,800
Solar Electric and Thermal Array: $750,000
Photo Galary
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News
Guadalupe-Saldaña Net-Zero Subdivision Site Clean-Up
10/24/09
October 24, 2009, has been declared the International Day of Climate Action, coordinated by 350.org to promote awareness that the sustainable limit of carbon dioxide in our atmosphere is 350 ppm.  Join volunteers on Saturday, October 24th, to help clean up the Guadalupe/Saldaña Net Zero Site, the future home of Austin’s first 100% affordable net-zero energy residential development.
Jeremiah Cuts Ribbon in Austin, TX
Sep. 2013 Austin News
Jeremiah Program and its partner, Guadalupe Neighborhood Development Corporation (GNDC), welcomed families into newly constructed duplexes in a ribbon cutting ceremony Thursday, September 19, 2013. Four young women from Jeremiah Program and their children will live in half of the duplexes, with GNDC residents occupying the other four. This is phase 1 of the project for Jeremiah Program. The duplexes are located in Guadalupe-Saldaña Net-Zero Subdivision, a former unregistered dupsite and brownfield in East Austin.
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