“Embodied energy” is definitely a thing. LEED certification takes it into account, giving extra points to existing buildings and reused materials. At some point however, if it’s leaky and poorly insulated, requires a lot of artificial light, and is out in the country requiring a car trip to do anything, then the benefit of the embodied energy is quickly used up. It can only get you so far, just like anything else.
It all depends on just what “efficiency” you’re talking about too. For transportation efficiency, then the older locally-sourced materials are probably better. They could have been shipped by coal-burning smoke-belching steam trains, or just floated down a canal pulled by a horse, cut from the trees in the woods around the house, or dug out of the ground. It’s hard to say. Some 19th century bricks were made with very polluting processes and some weren’t. Wood may have been old-growth, and metal for pipes and wires wasn’t always sourced in the best way.
An advantage to modern building materials is that they can be made from virtual garbage. Sawdust, wood chips, and glue makes floor and wall sheathing, cabinet boxes, and even finished doors and other surface laminates. Instead of burning limestone to make plaster, drywall is just a slurry of ground up rock pressed between paper pulp. Roof shingles are a mix of fiberglass, asphalt binder, and granulated sand instead of wood, slate, or tile which require cutting down trees, digging mines, and firing clay. Etcetera etcetera. They may require more energy/work in the production process, but less in the harvesting and extraction process.
So from a standpoint of resource use and intensity, the modern materials win out to some extent by using less virgin material, otherwise they’d be more expensive than the alternatives. However, they require sizable industrial facilities, so there aren’t small local producers, and they require lengthy shipping. These materials are also generally not reusable or recyclable, even if they are more durable. What can you do with old pex piping, vinyl siding, plywood, particle board cabinets, hollow-core doors, and fiberglass shingles other than throw them in the trash? Granted, aside from copper piping in older houses that has some value, it’s just as likely to be galvanized steel or even lead, and there’s not a lot you can do with the old rotted out wood siding with 10 layers of lead paint, the short subfloor boards full of nails, thin old cabinets that have been beaten to hell, same for the other doors and old roofing that’s worn out.