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May 22, 2026

Introducing Propeur

I sat next to a software developer at my friend's wedding a few weeks ago, and I figured I would ask him the obvious question: "What percentage of the code that you write today is now being done through AI?" At first he was reticent to answer, but eventually he told me that it's, like, the majority. That sounded right.

I then decided to pull out my phone and force upon him something that I've been vibe coding. I'm sure he found this boring, but his response was interesting nonetheless. He said, "This is the future of software. It is going to be both highly personalized and built by actual users. And because of this, it's going to be better software." In other words, accountants will build what they need, photographers will build what they need, and real estate developers will build what they need.

What I showed him was Propeur.com, a residential property management platform tailored toward small Ontario landlords that I have been building for my own purposes and as a tool that Globizen can use for its infill rental projects. It's still early days and there are bugs to work out, but here's what you can do so far:

  • Add your rental properties and receive a Monday morning email with a summary of what happened over the last week and what's on the horizon.

  • Manage tenants and rental units, including move-in and move-out dates, and all of the critical dates surrounding rental increases.

  • Automatically track current debt balances and maturity dates.

  • Store all relevant property documents, and have them automatically labeled and categorized in the appropriate folders.

  • Create a public property profile for both on-market and off-market units (here's an example).

  • Sync bank accounts and categorize expenses by property and unit.

  • Export transactions to a CSV, filtered by property, date, and revenue/expense category.

  • Log maintenance requests and automatically email them out to a contractor or maintenance person (the next step will likely be some kind of tenant portal).

  • Export tax reports at the end of the year.

Again, it's still very much a preliminary beta release and there are certainly bugs. But already, I find myself using it almost daily. If you're a small landlord in Ontario and would like to give it a spin, you can sign up here. I'd love to get your feedback on the platform. And if it's something you find useful, please feel free to drop me a line and I'll buy you a coffee.


Cover photo by Alexander Andrews on Unsplash

Cover photo
May 21, 2026

The end of zero marginal cost

The conventional beauty of the internet and software was that it had effectively zero marginal cost. That is to say, it might cost you a lot of money to create something initially, but once created, you could scale it very quickly, more or less for free. This has been a great way to make money, and it's the opposite of something like real estate development where everything takes forever and costs too much money.

But the landscape has shifted rapidly. Dror Poleg wrote this week that intelligence, rather than software, is now eating the world. The fundamental difference is that while software had zero marginal cost, AI does not. When we ask AI something, it has to reason it out in real time, and in order to do that, it needs to consume lots of energy and compute.

That changes things:

As a result of the above, we are seeing something we’ve never seen before: Software demand is beginning to bump into physical constraints. The world is struggling to allocate sufficient land to build data centers and to produce and redirect the energy required to meet AI demand. Tech giants like Google, Amazon, Meta, and Microsoft are spending an unprecedented amount of money to build these new data centers, but they are approaching their financial limits. Google has recently partnered with Blackstone, one of the world’s largest landlords, to expand and expedite the construction of new data centers.

All this sounds like great news for real estate developers. Finally, order has been restored in the universe: If you want to grow your business, you need to pay more rent; the natural scarcity of land is asserting itself. Instead of software eating the world, it is now the world that is eating the free cash flow generated by software companies.

However, these specific dynamics may only remain true in the short to medium term. As dystopian as it may seem, there is indeed an organized and real effort to bring data centres into space. Some of the advantages of this include abundant, continuous energy and zero land-use constraints to fetter growth. Now, I don't know enough to comment on the feasibility or timing, but it certainly sounds like great fodder for a Black Mirror episode.


Cover photo by SpaceX on Unsplash

Cover photo
May 5, 2026

How to protect your NFTs (if any of you still care)

Broadly speaking, the market no longer cares about NFT art. I love the collection that I have put together over the last five years and I continue to buy pieces from time to time. But it is becoming harder as fewer artists mint their work and as more marketplaces shut down. For instance, last month, Foundation announced that it would be closing up shop after a failed sale of the company. This was one of the most well-known marketplaces from the 2021 NFT era.

The other problem with marketplaces shutting down is that now many NFTs are at risk of getting lost forever. But how is that possible given that blockchains are supposed to decentralized and immune to this sort of thing? Here's my non-technical explanation, which you may want to pay attention to if you own any NFTs.

The actual images or graphics that make up NFT art can be stored on blockchains in generally one of two ways: either on-chain or off-chain (which is how most NFTs are stored). On-chain means that the code required to render the image (usually vector graphics) is stored directly on the blockchain itself.

One of the most notable examples is the CyberBrokers collection created by Chicago artist Josie Bellini. In this instance, everything is stored on the Ethereum blockchain. It's more expensive to do it this way, but it means that as long as Ethereum exists, CyberBrokers exist. So, pretty permanent!

The other way that NFT art can be stored is off-chain. What this means is that the NFT you are buying is essentially a pointer to an image stored somewhere else on the internet. Owning the pointer is a way of saying, "I own that thing over there!" And since the pointer exists on a blockchain, you should have it forever. The question is whether "over there" still exists or if it's pointing to nothing. This is the problem to be concerned about if you own any NFTs.

"Over there" can take many forms. The image could be stored on a centralized server like what Instagram would use when you upload a photo or story. In this case, there's a high degree of risk that your art could disappear forever and you'd be left with a pointer that points to nothing. The link would be broken.

Decentralized storage is better than centralized storage, but it's important to understand the differences. Some decentralized storage networks, like Arweave, are more or less permanent. Arweave works by collecting a fee upfront with the promise that it will be enough to cover the cost of storing the data for at least 200 years. So again, pretty permanent.

But the most common place for NFTs to be stored is on something called the InterPlanetary File System (or IPFS). IPFS is unique in that it is a peer-to-peer network that uses content-based addressing, instead of location-based addressing. What this means is that you don't ask the network "where is this file stored?"; you ask the network, "who has this file?"

This is a crucial difference because it means that as long as your NFT art is stored somewhere in the world, it will remain accessible. However, the challenge is that there isn't a permanent funding model, so if a marketplace like Foundation was paying to store your art on IPFS and has now shut down, then "stored over there" will disappear and the pointer will point to nothing.

The good news is that there's an easy solution if your pieces are on IPFS. All you have to do is store or back up your NFT art somewhere and then there will always be an "over there" to point to! The term used is "pinning" your NFTs and I've been in the market for a service for a while. I considered a bunch of companies, and then last week I signed up with Piñata. It's free for 1GB of storage or $20/month for 1TB of storage.

If you've collected any NFTs that you care about, I would strongly encourage you to make sure that you've pinned the ones you can. It doesn't matter what you use to do it. It doesn't have to be Piñata. This is not a sponsored post and I'm in no way affiliated with the company. I just care about the crypto and NFT space, and I would hate for any of you to lose any of the work that you've collected.

If you're a longtime reader of this blog, you might remember that back in 2021 we created the first-ever NFT collection tied to pre-construction condominiums (or at least we think we were the first to do it). It is called the Petra Cortright NFT Collection at One Delisle and you can read more about it here.


Cover photo by Peter Olexa on Unsplash

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Brandon Donnelly

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Brandon Donnelly

Daily insights for city builders. Published since 2013 by Toronto-based real estate developer Brandon Donnelly.

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