Am I being inflexible?

We live in a community that just had the exterior repainted, including the carports interior. We share ours with our neighbour.

The maintenance commitee is offering us to have someone degrease and powerwash our carport floors. It would cost each family $25ea. I was wanting to do it myself but our neighbour has a rather large grease pit on their side. I don't want to deal with the grease.

Everything has been removed from the carport, including most items from the storage. The guy can come tomorrow to get it done. Our neighbour said he can do it for free but not until after August, sometime. They don't want to pay the $25.

To me, it's a shared space. The floors could definitely use a clean. The neighbour is unable to do it while everything is already out of the carport. So collectively, it makes sense to "me" that we each pay $25 to get it done tomorrow, so we can put everything back into it that's piled outside our front doors.

My partner says he'll pay half but thinks it's a waste of money. If it were up to him, he'd leave it alone. Afterall, it's not a play area and cars get parked in it, anyway (when not in use). He's only willing to pay because he knows it's what I WANT to do.

Our neighbour says they can do it for free, even if it means we'll have to take everything out again, at a later time, and at their convenience. Why pay $25?

I feel they're being inflexible over a shared space. All other carports are being done. I suggested we pay our neighbour to do it, if he can do it this coming week. He works M-F so either weekends would potentially work. It's a no.

Am I being inflexible to think they're being unreasonable? It just makes sense to me to get this done now, even if we're having to pay $25. We're not talking about big money.

My partner says he understands where I'm coming from and wants to be supportive to me. So, as it stands, him and I are paying the $50bill to get it done tomorrow.

We live in a cooperative environment. It's our individual responsibility to maintain our living space.. keep it clean, repair any damages, etc. It doesn't seem like they think in this same way, without the added resistance.

I get everyone is entitled to have their say about their own space. In this situation, it wouldn't make sense to have the guy do half of the carport.. we're working with grease and water.

It just seems like the option is:
1) pay the full bill, ourselves
2) have the job done for free, on their convenience, and having to take things in/out of carport 3 more times

My partner says he's not a cement expert but doesn't think washing it would make it last longer.