The hottest Construction Substack posts right now

And their main takeaways
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The Elusive Cost Savings of the Prefabricated Home

Construction Physics • 28812 implied HN points • 12 Mar 26
đź’Ľ Business Construction
  1. Moving homebuilding into factories has rarely produced big cost cuts compared to traditional on‑site building; most savings are modest (often 5–20%) and can vanish once site work and finishing are counted, with manufactured single‑wide homes being the main outlier.
  2. Prefabrication’s main practical benefits are faster schedules, tighter quality control, and more predictable budgets and timelines, not large long‑term price reductions.
  3. True industrial gains in housing require deeper changes than simply building in a factory — transport, codes, customization, and the need for new standardized processes limit how much prefab alone can lower costs.

The Frustrating Bias Against Strut-leg Chairs

The American Peasant • 2395 implied HN points • 31 Oct 24
🪑 Design Construction
  1. Strut-leg chairs are simpler to build and use less material, making them efficient for craftspeople.
  2. They are easier to repair compared to chairs with stretchers, needing only minor adjustments instead of full disassembly.
  3. Strut-leg chairs have a unique visual appeal and can sometimes actually be stronger than traditional chairs with stretchers.

Reading List 02/28/26

Construction Physics • 21087 implied HN points • 28 Feb 26
đź’Ľ Business Construction
  1. Getting permits in Los Angeles adds big costs and delays: developers pay about 50% more (around $48 per square foot) for preapproved land, which raises the chance a project finishes quickly and helps explain about one-third of the gap between home prices and construction costs.
  2. Building high-end housing can free up cheaper units down the ladder: new luxury developments often create vacancies elsewhere in the city, letting people move up and increasing overall housing availability.
  3. Manufacturing is reconfiguring and facing both bottlenecks and competition: consumer electronics makers are outsourcing or exiting TV production and big projects can be stalled by local legal delays, while equipment suppliers like gas-turbine manufacturers are ramping up capacity amid rising competition from China.

Trends in US Construction Productivity

Construction Physics • 17537 implied HN points • 12 Feb 26
đź’Ľ Business Construction
  1. U.S. construction productivity has been stagnant or fallen for decades, especially compared to strong gains in the rest of the economy. Many sector-wide measures show little to no growth and some show long-term declines.
  2. How productivity is measured matters a lot — sector, subsector, project, and task metrics can tell different stories, and results are highly sensitive to deflators, changing output mix, labor accounting, and quality adjustments. These measurement problems make precise conclusions difficult.
  3. Other countries also show weak construction productivity gains since the 1990s, and while some tasks or subsectors have improved, overall construction growth is much lower than manufacturing and the broader economy.

Reading list 02/14/26

Construction Physics • 9186 implied HN points • 14 Feb 26
đź’Ľ Business Construction
  1. Housing policy and the homebuilding market are in flux, with new laws and zoning talks aiming to boost supply while regulators eye possible price coordination by builders.
  2. Coastal erosion and sea-level effects are increasing building collapses in parts of the southern Mediterranean, raising urgent structural and safety concerns for port cities.
  3. Manufacturing is shifting: AI demand is driving a boom in fiber-optic production, even as cheaper foreign-made goods and changing tariff policies are squeezing some domestic producers.
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Reading List for 01/31/2026

Construction Physics • 16911 implied HN points • 31 Jan 26
đź•ą Technology Construction
  1. A new vertically integrated startup is building modular family homes using structural insulated panels and acting as both developer and builder to control design and delivery.
  2. US tariffs have pushed domestic aluminum prices well above global levels, raising input costs and threatening to make American manufacturing less competitive.
  3. Tesla is scaling back traditional EV production and repurposing factories while Chinese manufacturers now account for roughly two-thirds of global EV sales, signaling China’s growing dominance in the electric vehicle market.

Reading List 01/24/26

Construction Physics • 18790 implied HN points • 24 Jan 26
đź•ą Technology Construction
  1. Data centers are eating a huge share of memory chips and electricity, causing supply shortages and a rapid push to expand capacity; that pressure is driving new laws and projects to speed construction and secure power.
  2. Rebuilding domestic manufacturing is harder than it looks: Chinese makers are scaling quickly while equipment and parts production often stays overseas, and tariffs and supply-chain realities keep reshoring expensive.
  3. Housing and construction are being shaped by policy, labor deals, and new tech — from limits on institutional homebuyers and giant union agreements to faster permitting and AI tools — all of which will change what gets built and how.

New Home Sales Decline Sharply to 587,000 Annual Rate in January

CalculatedRisk Newsletter • 239 implied HN points • 19 Mar 26
đź’° Finance Construction
  1. New home sales fell sharply to a 587,000 annual rate in January, down 17.6% from December and 11.3% from a year earlier, with recent months revised lower.
  2. Housing inventory and months' supply have risen — supply is about 9.7 months now, well above the 4–6 month normal range, with completed homes and 'not started' units notably elevated.
  3. The median new home price is about 13% below its peak, largely because the mix of homes sold has shifted toward lower-priced or different types of units.

Should US homebuilders emulate Sweden?

Construction Physics • 28185 implied HN points • 01 Jan 26
đź’Ľ Business Construction
  1. Sweden has widely adopted prefabricated housing, but the observable data don’t show clear productivity gains or lower costs for single-family homes compared with the US.
  2. New Swedish homes cost substantially more per square foot than US homes, and higher energy-efficiency and construction standards partly explain that premium, so prefab hasn’t obviously made them cheaper.
  3. Factory-built methods do offer benefits like better quality control, faster delivery, and predictable pricing, and they may be more promising for multifamily projects, but the cost and productivity advantages there remain uncertain.

Architecture Billings Declined Slightly in February

CalculatedRisk Newsletter • 229 implied HN points • 18 Mar 26
đź’Ľ Business Construction
  1. Architecture billings stayed just below growth in February (ABI 49.4) and the index has been in contraction for 38 of the last 41 months, showing persistent weakness even as some measures hint at stabilization.
  2. Multi-family billings have been under 50 for 43 straight months, which signals ongoing weakness in the multifamily market and likely fewer multifamily starts ahead.
  3. Because the ABI typically leads commercial real estate investment by 9–12 months, the prolonged ABI contraction points to a slowdown in CRE investment through 2026, with notable regional and sector differences (the South near flat, the Northeast particularly weak, and commercial/industrial softer).

Stagnant Construction Productivity Is a Worldwide Problem

Construction Physics • 21504 implied HN points • 11 Dec 25
đź’Ľ Business Construction
  1. Many countries, especially in Western Europe, have improved construction productivity over the years, but the US has seen a decline since the 1970s.
  2. Since the 1990s, some Eastern European and Latin American countries have shown productivity growth, but many wealthy countries, including those with advanced technologies like Japan and Sweden, have flat or declining productivity.
  3. Belgium stands out as a nation with consistent construction productivity growth, but it's unclear if this is due to real efficiency gains or just how the data is reported.

Reading List 12/20/25

Construction Physics • 12735 implied HN points • 20 Dec 25
đź•ą Technology Construction
  1. A fusion startup is merging with a media company to combine fusion technology with access to capital and pursue utility-scale fusion power plants.
  2. Tesla’s robotaxi fleet is crashing much more often than typical human drivers, raising serious safety concerns and standing in contrast to safer autonomous services like Waymo.
  3. iRobot has filed for bankruptcy and will be taken over by its main Chinese supplier, showing that even consumer-robot leaders can fail amid competition and failed acquisition efforts.

Reading List 01/03/2026

Construction Physics • 7516 implied HN points • 03 Jan 26
đź•ą Technology Construction
  1. Large language models are opening a new path for automated building code checks by reading construction documents, and startups claim big accuracy and time savings, but the construction industry’s risk aversion and imperfect AI accuracy remain barriers.
  2. Meranti (lauan) plywood is widely used for RV interiors and other lightweight construction, and heavy U.S. demand may be driving deforestation in Southeast Asia with serious ecological and social consequences.
  3. Big policy and planning interventions—like the old national raisin reserve to control supply and the creation of Nusantara as a new capital—show how governments sometimes reshape markets or build cities to address economic and environmental problems.

January 2026 Residential Construction

Erdmann Housing Tracker • 147 implied HN points • 17 Mar 26
đź’Ľ Business Construction
  1. Residential construction in January 2026 is described as capacity-constrained according to the available data.
  2. Detailed metrics and explanations are implied to support that capacity-constraint conclusion, indicating deeper analysis exists.
  3. The full detailed findings are behind a paywall and require a subscription to access.

My Book "The Origins of Efficiency" is Now Available for Preorder

Construction Physics • 43009 implied HN points • 12 Aug 25
đź’Ľ Business Construction
  1. The book explores why the construction industry struggles with efficiency, despite efforts to modernize through factory-built methods.
  2. It highlights the failure of companies like Katerra to improve construction costs and productivity, revealing a lack of understanding about efficient processes.
  3. The author examines various production strategies used in other industries to identify what can genuinely lead to efficiency improvements in construction.

Reading List 12/13/2025

Construction Physics • 9395 implied HN points • 13 Dec 25
đź•ą Technology Construction
  1. Boom Supersonic is pivoting to build jet-derived gas turbines for AI datacenters with big claimed orders and ambitious production targets, but its history of missed deadlines and split focus raises skepticism about delivery.
  2. Historical learning curves are often poor predictors of future cost declines and many technologies show stepwise rather than steady improvements, so forecasts for things like solar, wind, and batteries are uncertain and require careful analysis.
  3. AI-generated hoaxes can cause real-world disruption, as a fake bridge-collapse image halted trains and prompted inspections, highlighting how cheaply misleading content can be produced and why people should avoid creating or sharing it.

Follow Up to Multiple Binding Constraints Make Housing Analysis Hard

Erdmann Housing Tracker • 358 implied HN points • 09 Mar 26
đź’Ľ Business Construction
  1. Long-term construction capacity is constrained by hysteresis, so national production can only rise slowly. That makes local demand often hit a fixed national limit, leaving some metros effectively stuck with inelastic supply.
  2. Both claims — that supply is inelastic and that costs are too high — are true and connected. Fast-growing regions bid up inputs and materials, which raises costs elsewhere and pushes those markets into a more inelastic local supply state.
  3. Local reforms like upzoning can boost housing in a city but won’t instantly increase national capacity and can raise input prices elsewhere, so benefits may be limited or temporary. Policy must distinguish short-run vs long-run effects and target the real binding constraints (inputs, financing, regulations) to enable a lasting recovery.

Housing Starts Increased to 1.487 million Annual Rate in January

CalculatedRisk Newsletter • 186 implied HN points • 12 Mar 26
đź’Ľ Business Construction
  1. Total housing starts rose to a seasonally adjusted annual rate of 1.487 million in January, about 7.2% above December and roughly 9.5% higher than January 2025.
  2. The increase was driven by a big jump in multi-family starts (about +54% year‑over‑year), while single-family starts fell and were down around 6.5% year‑over‑year.
  3. Building permits declined (about 5.4% month‑to‑month and 5.8% year‑over‑year), and because multi-family starts are volatile the recent surge may moderate in coming months; housing units under construction remain slightly elevated.

Reading List 12/06/2025

Construction Physics • 7307 implied HN points • 06 Dec 25
đź•ą Technology Construction
  1. 3D printing is becoming a game changer in manufacturing, with companies like Lego now able to mass-produce 3D-printed parts, improving design options.
  2. The average age of first-time homebuyers is often reported to be rising, but some data suggests it might actually be declining, highlighting issues with survey methods.
  3. Old technologies, like the filings coherer used in early radios, were simple to implement but led to better designs as the technology advanced over time.

Multiple Binding Constraints Make Housing Analysis Hard

Erdmann Housing Tracker • 295 implied HN points • 06 Mar 26
đź’Ľ Business Construction
  1. Housing supply is highly non-linear: some parts of the curve are nearly vertical (existing homes and permitting caps) while the middle is flat, and national construction capacity is stuck in hysteresis so output can only rise slowly.
  2. Limited capacity and input inflation direct materials to the fastest-growing cities, which pushes up local prices and raises the flat part of their supply curves; that means upzoning or banning big investors may have little effect if a city is on the wrong part of its curve.
  3. Ignoring these multiple binding constraints leads to misleading analysis and bad policy; lowering rents nationally requires raising overall construction capacity and reducing input costs, not just local zoning changes or investor bans.

Asking Rents Continue to Decline Year-over-year

CalculatedRisk Newsletter • 263 implied HN points • 04 Mar 26
đź’Ľ Business Construction
  1. Asking rents are down year‑over‑year and have been soft for several years, with the national median rent about 1.5% lower than a year ago and roughly 5.9% below the 2022 peak.
  2. A backlog of units started in 2021 completed mainly in 2023–2025 (especially 2024), boosting supply and raising multifamily vacancy rates to a record high, which has put downward pressure on rents.
  3. Even with fewer new rental units expected in 2026, recent immigration policy changes that reduce legal immigration and increase deportations are likely to cut renter demand and keep downward pressure on rents this year.

Why Skyscrapers Became Glass Boxes

Construction Physics • 59712 implied HN points • 13 Jan 25
🪑 Design Construction
  1. Skyscrapers today are mostly glass boxes because they are cheaper and easier to build. This style lets developers create more usable space while saving on construction costs.
  2. Real estate developers play a huge role in deciding how a skyscraper looks. They focus on what will make money, often opting for simpler designs that meet tenant needs but lack ornamentation.
  3. Our interest in building design shapes what gets built. While many developers prefer beautiful designs, the market often pushes for simpler, more modern aesthetics that make financial sense.

1.600 million Total Housing Completions in 2025 including Manufactured Homes

CalculatedRisk Newsletter • 253 implied HN points • 23 Feb 26
đź’° Finance Construction
  1. Total housing completions in 2025 fell to about 1.60 million (1.498 million excluding manufactured homes), down roughly 7.5–7.9% year‑over‑year.
  2. Multifamily completions declined sharply in 2025 (5+ unit completions down about 20% from 2023) after a 2024 surge, but they still ranked as the second highest level since 1987.
  3. Single‑family completions dipped slightly to about 1.01 million in 2025, while active single‑family inventory has risen (up 1.4% week‑over‑week and roughly 9.4% year‑over‑year) with a larger spring inventory pickup expected.

Reading List 07/26/25

Construction Physics • 10647 implied HN points • 26 Jul 25
đź•ą Technology Construction
  1. The FAA has changed rules for light sport aircraft, making it easier to create and fly new types of planes. This could boost innovation in personal aviation and make flying more accessible.
  2. China is building the world's biggest hydropower dam in Tibet, which will generate massive amounts of energy. However, this project has raised concerns about its impact on neighboring countries and the environment.
  3. Microfactories in construction are gaining popularity as they allow for on-site production of building components. This approach can save money and time by reducing transportation and large factory costs.

Rebuilding the American Dream, One Row House at a Time

Common Sense with Bari Weiss • 273 implied HN points • 20 Feb 26
đź’Ľ Business Construction
  1. A startup uses a factory assembly-line process to mass-produce houses from prebuilt panels and finished rooms.
  2. Their product is a packable row house that can fit into shipping containers and be assembled onsite, offering more space than an apartment but less than a suburban home.
  3. The company aims to tackle the national housing affordability crisis by providing a scalable, lower-cost path to city homeownership.

Home construction leading the almost recession recovery

Erdmann Housing Tracker • 210 implied HN points • 25 Feb 26
đź’Ľ Business Construction
  1. Construction employment is a leading indicator for recessions and recoveries, so sustained building activity makes it harder for a deep recession to take hold.
  2. Rising interest and mortgage rates around 2022 stalled construction job growth, but the sector is also held back by non-labor capacity limits, and overall unemployment has recently peaked and begun to fall.
  3. Recent upticks in new home sales and a normalization of migration into high-growth regions suggest single-family construction may soon rise, and homebuilder results could surprise to the upside.

New Home Sales at 745,000 Annual Rate in December

CalculatedRisk Newsletter • 229 implied HN points • 20 Feb 26
đź’Ľ Business Construction
  1. New home sales ran at a 745,000 seasonally adjusted annual rate in December, and about 679,000 new homes were sold in 2025, a slight decline from 2024.
  2. Inventory is elevated with 7.6 months of supply overall; completed homes are near multi-year highs and homes not started are at an all-time high.
  3. The median new home price is about 10% below its peak mainly due to a change in the mix of homes sold, and initial sales estimates are uncertain and likely to be revised down.

Reading List 08/02/2025

Construction Physics • 7098 implied HN points • 02 Aug 25
đź•ą Technology Construction
  1. Housing prices are rising partly due to fewer big companies dominating the homebuilding market. However, recent research suggests that this concentration may not be as high as some people think.
  2. European countries tend to have much lower construction costs for multifamily housing compared to the US. This could be due to differences in building practices and labor costs.
  3. Elon Musk has made many predictions about self-driving cars, but most of them have not come true or have been overly optimistic. Only a small fraction of his predictions have been fulfilled.

December 2025 Residential Construction

Erdmann Housing Tracker • 189 implied HN points • 20 Feb 26
đź’Ľ Business Construction
  1. Recent Census estimates show residential construction is recovering very slowly, characterized as a "slow, boring" recovery. The recovery is modest rather than a strong rebound.
  2. A persistent housing supply shortage is the dominant factor for near-term construction trends and matters more than mortgage rates. That shortage largely determines how much new building occurs even as interest rates move.
  3. Understanding the current situation requires a long view of about thirty years of housing activity; the analysis connects past policies and market shifts to today’s supply constraints. The narrative explains how historical trends helped create the present housing dynamics.

Architecture "Billings remain soft to start 2026"

CalculatedRisk Newsletter • 153 implied HN points • 19 Feb 26
đź’Ľ Business Construction
  1. Architecture billings are in contraction, with the ABI at 43.8 in January and the index in contraction for 37 of the last 40 months. Because the ABI typically leads nonresidential construction by 9–12 months, this points to a slowdown in commercial real estate investment through 2026.
  2. Multifamily billings have been below the 50 growth threshold for 42 consecutive months, indicating continued weakness in multifamily starts and no billing growth for those firms since mid‑2022.
  3. Pending home sales fell 0.8% month‑over‑month and 0.4% year‑over‑year in January, missing expectations and signaling softer near‑term existing‑home activity; contract signings usually lead closed sales by 45–60 days, so weaker sales are likely in the coming months.

Reading List 12/14/24

Construction Physics • 14823 implied HN points • 14 Dec 24
đź•ą Technology Construction
  1. Japan is investing heavily in semiconductor manufacturing. They're trying to produce custom chips in smaller batches, which could change the industry.
  2. Electric vehicles (EVs) are becoming more reliable over time. Although they had more problems than gas cars last year, the gap is getting smaller as manufacturers improve.
  3. New drilling technologies are being explored to access geothermal energy. Some companies are looking into using methods like microwaves to create holes in the Earth without traditional drilling.

Asking Rents Decline Year-over-year

CalculatedRisk Newsletter • 248 implied HN points • 03 Feb 26
đź’Ľ Business Construction
  1. Asking rents nationwide have fallen year‑over‑year across several major indexes, continuing a multi‑month streak and pulling rents down from their 2022 peak.
  2. A surge in multifamily supply plus weaker demand — including slower household formation and changes in immigration — has raised vacancies and kept rent growth under pressure.
  3. The trend is uneven: single‑family rents and a few metros still show modest gains, while many large markets are seeing weaker growth or outright declines.

Why Is It So Hard to Build an Airport?

Construction Physics • 22131 implied HN points • 04 Mar 24
đź’Ľ Business Construction
  1. Airports are crucial for global economy, with aviation contributing significantly to GDP.
  2. Building airports is notoriously difficult due to opposition from various interest groups, particularly related to noise concerns.
  3. Despite challenges in airport construction, the aviation industry has managed to adapt and accommodate increased air travel by adding runways, expanding infrastructure, and increasing passenger capacity per plane.

Homebuilder Earnings

Erdmann Housing Tracker • 168 implied HN points • 03 Feb 26
đź’Ľ Business Construction
  1. Pulte, M/I, and Meritage all reported earnings covering the period through December.
  2. Their earnings reports appeared to tell a similar overall story or trend across the three companies.
  3. Full details and deeper analysis are behind a subscription/paywall, so you need access to the paid content for the complete write-up.

Reading List for 11/30/24

Construction Physics • 9186 implied HN points • 30 Nov 24
🌞 Climate & Environment Construction
  1. High-rise construction is booming in Canada, with many Canadian cities leading in the number of skyscrapers being built compared to US cities.
  2. Mild hybrids, which are cars that use a small electric motor to support a gasoline engine, are becoming popular in Europe due to stricter emissions regulations.
  3. Offshore oil drilling is seeing a revival, as companies invest heavily in new technologies and seek new sources of oil in response to rising energy prices.

Reading List for 11/23/24

Construction Physics • 8977 implied HN points • 23 Nov 24
đź•ą Technology Construction
  1. Shipping disruptions can lead to huge costs, like the $89 million loss from a single incident in the Suez Canal. Overall, global shipping costs could reach around $600 million from such events.
  2. Robots that perform specific construction tasks, like roofing, are becoming more common. Companies are focusing on automating certain jobs to improve efficiency in construction projects.
  3. Fusion energy investments are rising, with over $2.5 billion put into it in 2024. Countries like China are significantly increasing their spending on fusion technology.

On Yglesias on Manufactured Homes

Construction Physics • 20252 implied HN points • 05 Jan 24
đź’Ľ Business Construction
  1. Manufactured homes can reduce home construction costs compared to site-built homes.
  2. The theory that HUD code requirements caused manufactured home decline may not be accurate.
  3. Improving financing and reducing zoning restrictions may not significantly increase manufactured home construction.

Mass Timber is Great, but It Will Not Solve the Housing Shortage

Construction Physics • 13153 implied HN points • 13 Mar 24
đź’Ľ Business Construction
  1. Mass timber construction is advantageous for tall buildings due to its fire resistance and carbon sequestration, but it may not significantly increase housing construction volume in the US compared to traditional methods.
  2. While mass timber is praised for its safety and environmental benefits, it faces challenges such as higher initial costs and more complex processing steps, making it less competitive than light-framed wood construction in the US.
  3. Canada's experience with mass timber, despite a supportive ecosystem, shows that residential mass timber construction may not see a significant uptick in the US housing market even with continued growth and cost reduction.

Part 1: Current State of the Housing Market; Overview for mid-February 2026

CalculatedRisk Newsletter • 43 implied HN points • 16 Feb 26
đź’° Finance Construction
  1. Active listings for existing homes are up about 10% year‑over‑year and month‑of‑inventory is back to pre‑pandemic levels, which is putting downward pressure on prices and could lead to year‑over‑year price declines this year. Most homeowners still have substantial equity and low mortgage rates, so a big wave of distressed sales is unlikely.
  2. Homebuilders look to face a difficult 2026 because they have many completed homes for sale and an unusually large number of unsold homes under construction, so they’re cutting prices to compete with growing existing‑home inventory.
  3. Key government data on housing starts and new home sales are delayed by the shutdown, leaving the picture incomplete, and different sources show mixed inventory trends even though national supply remains roughly 17% below 2017–19 levels and the inventory recovery has stalled.