We intend to certify an existing office building, which is going to be retrofitted with the following criteria:
-No intervention in the envelope
-Replacement of the HVAC (both production and distribution units) and lighting/electrical, when it's required in terms of regulation and efficiency.
-Retroffiting of the false ceilings and technical floors
-Retroffiting of the core services (bathrooms)
-The offices will be rented to different tenants, which are going to finish only the internal distribution.
We are wondering which certification standard is the more convenient: Major Renovation or Core and Shell.
According the the Rating system selection guidance, apparently, "Core and Shell" requires intervention in both the Shell and core installations. That would lead to "Major Renovation".
Is that right?
"LEED BD+C: Core and Shell Development. Buildings that are new construction or major renovation for the exterior shell and core mechanical, electrical, and plumbing units,..."
thanks for you feedback
David Eldridge
Energy Efficiency NinjaGrumman/Butkus Associates
67 thumbs up
March 30, 2017 - 11:58 am
I don't think that's quite how I'd interpret the wording, the description for Core and Shell that you referred to is typically used describing new construction with future tenants. There could be a case for major renovation as a core and shell although this is not the typical application of the rating system.
I don't think I'd rule out C&S only because you weren't making envelope retrofits - another rule of thumb is that two of the three "systems" should be touched including envelope, HVAC, and lighting - which you'd still have two of.
What's the plan for the tenants? Will it be all new tenants moving in and building out their own spaces?
They key for you may be at what level of renovation is taking place in the tenant suites.
Review the two checklists and make sure which credits would be applicable for each system and hopefully that helps clear things up.
Alex Parella
Architect_LEED AP11 thumbs up
March 31, 2017 - 4:25 am
Thanks David,
The scope of the current renovation includes everything but the internal distribution. All the HVAC and lighting (ensuring the required light level) will be already included in the current stage.
My main concern was about the AND "exterior shell and core mechanical,".
I thought the "40/60 rule of thumb" you mentioned was only related to the surface and its different uses. Do you mean it could be applied to the different systems?
Thanks for your feedback