Green Builder Media's Ronan Mirza delivers the weekly housing and sustainability news roundup, covering Berkshire Hathaway's $8.5 billion acquisition of Taylor Morrison, New York City's plan to create or preserve 400,000 affordable units, Texas water demand pressures, and fire test failures in green wall systems. The episode also features a clip with Cynthia Adams on why value per square foot should reflect a home's performance.
00:00:06:17 - 00:00:35:21
Ronan Mirza: I'm Ronan, and here's what's happening this week in housing, sustainability and building science. This week, Berkshire Hathaway made a major bet on the future of housing. The company announced plans to acquire Taylor Morrison for $8.5 billion, combining the builder with Clayton Properties and creating the fourth largest homebuilder in the country. It's a notable move because Berkshire appears to be looking beyond today's market challenges high mortgage rates, affordability pressures and softer demand, and focusing on the long term need for housing.
00:00:35:22 - 00:01:03:12
Ronan Mirza: It's also another sign that homebuilding consolidation is accelerating in an environment where land, capital supply chains and incentives increasingly determine success. Scale is becoming a powerful competitive advantage. Speaking of housing, New York City is proposing one of the most ambitious affordability plans we've seen in years. Marry, modernize new block by block initiative aims to create or preserve 400,000 affordable housing units over the next decade.
00:01:03:14 - 00:01:37:07
Ronan Mirza: The plan includes new construction, preservation of existing units, office to residential conversions, zoning reforms and a $22 billion housing investment over the next five years. Whether it succeeds will depend on financing, permitting and political support, but it reflects the growing urgency around housing affordability nationwide. Another potential housing opportunity may be hiding in plain sight. A new report found agencies are using just 28% of their office space, while the government owns roughly 10,000 underused or vacant buildings.
00:01:37:13 - 00:02:07:04
Ronan Mirza: Some experts see those properties as an untapped source of housing, retail and mixed use redevelopment. The challenge is in identifying the underused buildings it's navigating years of approvals, deferred maintenance and government bureaucracy to put them back in play. Meanwhile, Texas continues to face a different kind of housing challenge. Water. According to Bloomberg, the state's draft 2027 waters plan may significantly underestimate future demand.
00:02:07:05 - 00:02:32:08
Ronan Mirza: Texas added nearly 400,000 residents between 2024 and 2025 alone, and researchers estimate data centers could account for more than 9% of statewide water demand by 2040. More than manufacturing will use. Critics also note that climate change isn't mentioned once in the state's 80 page water plan, despite drought conditions affecting Texas during ten of the last 15 years. Water isn't the only infrastructure issue getting attention in Texas.
00:02:32:09 - 00:02:59:17
Ronan Mirza: Sunrun and energy launched a new Houston area energy program that combines rooftop solar, battery storage and participation in a virtual power plant. The concept is simple. Homeowners gain backup power during outages and receive bill credits when stored. Energy helps support the grid during peak demand. What's interesting isn't just the technology, it's the business model. Energy resilience is increasingly being packaged as a built in service rather than an expensive upgrade.
00:02:59:24 - 00:03:28:06
Ronan Mirza: In markets facing rising utility costs and grid instability, that could become a significant selling point for builders. While we're on the topic of resilience, new research is raising concerns about green wall systems. Researchers at the University of Greenwich found that some systems using plastic polypropylene plant modules failed critical fire tests in less than four minutes, faster than the failure rate for the aluminum composite cladding associated with London's Grenfell Tower disaster.
00:03:28:09 - 00:03:52:29
Ronan Mirza: More than 94% of the heat release came from the plastic support structure itself, not the vegetation. The findings are prompting calls for stricter fire testing standards and increased use of noncombustible materials in green wall construction. And that brings me to a resource we recently released, Green Builder Media and the Home Fire Sprinkler Coalition have published a new free book called The Case for Residential Fire Sprinklers.
00:03:53:00 - 00:04:24:14
Ronan Mirza: The report exams decades of fire safety data, cost benefit analysis, and real world performance. You'll find a link to download it in the show notes. Back on the building science front condition attics continue gaining popularity and high performance homes, but getting them right requires careful moisture management. A new guide from the Insulation Institute outlines proven approaches for on vented roof assemblies, including strategies for condensation control, air sealing, and climate specific code compliance.
00:04:24:20 - 00:04:50:14
Ronan Mirza: As more builders move insulation to the roofline, understanding moisture management is becoming essential to avoiding durability issues and callbacks. Looking further ahead, a new design competition is asking what homes might look like in the future, defined by water scarcity. USB-C California's shaping the future of water use at home competition challenged teams to make low water living desirable rather than restrictive.
00:04:50:15 - 00:05:14:26
Ronan Mirza: The winning concepts included homes that harvest water from the air, recycle wastewater on site, and reduce household water consumption by more than 80%. It's a glimpse into how design may need to evolve as water becomes an increasingly valuable resource. Here's something else worth thinking about. A new study from Hiroshima University suggests that consumers who are skeptical of environmental claims don't necessarily do more research.
00:05:15:01 - 00:05:44:26
Ronan Mirza: They may simply disengage altogether. Researchers found that greater skepticism was associated with less information seeking behavior and lower feelings of responsibility around less sustainable purchasing decisions. The takeaway for builders and manufacturers transparency, third party verification, and credible data may be far more effective than marketing claims or moral appeals along those lines. Not all homes deliver the same value, even when they appear identical on paper.
00:05:44:26 - 00:06:05:20
Ronan Mirza: In the latest episode of The Valuation Metric. Sara Guttman sits down with Perl Certification CEO Cynthia Adams to explore why comfort, resilience, energy, performance and long term affordability often remain invisible in traditional home valuations. You can watch the full conversation on the Green Builder Media network. Here's a clip of the discussion.
00:06:05:26 - 00:06:09:12
Cynthia Adams: I'm going back to that.
00:06:09:15 - 00:06:28:23
Cynthia Adams: Same stated that I've made, and that for me, value per square foot is accountable to the home's performance, not just how it looks. So it's how that home delivers on comfort, on health, on resilience, on efficiency. Not all square footage is equal.
00:06:28:24 - 00:06:54:21
Ronan Mirza: This week's product of the week is Opta Glass, a recycled glass aggregate that replaces virgin materials and concrete. The product helps reduce waste, lower embodied carbon and support circular economy goals without sacrificing performance. It's also been specified for our vision House Hickory Grove project in North Carolina. You'll find more information in the show notes. And finally, the market for all electric homes may be much larger than many builders realize.
00:06:54:22 - 00:07:16:09
Ronan Mirza: According to Cognition Smart Data, nearly 76% of buyers are either interested in or open to an all electric home. Only about one quarter say they're not interested at all. The biggest opportunity may be nearly the 40% who remain undecided. For many buyers, the stronger argument is an environmental impact is predictable monthly costs and lower long term operating expenses.
00:07:16:12 - 00:07:39:00
Ronan Mirza: Builders still treating all electric homes as a niche conversation may be overlooking three out of four potential buyers. One last reminder Sustainability Symposium 2026 is underway. If you miss day one, it's not too late to register and join day two tomorrow at noon eastern. And if you can't attend live, don't worry, you'll receive access to the recordings afterward.
00:07:39:01 - 00:07:48:17
Ronan Mirza: Click the registration link in the description for access. That's it for this week. Thanks for watching. Don't forget to like, share and subscribe and I'll see you next week.
00:07:48:19 - 00:08:00:22
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