I have worked for many a client in helping coordinate repairs, remodeling, inspections, staging etc in preparation for sale. If the seller understands the goal, I am ready, willing to work.
Extensive termite damage is a hard one because buyers can get very skiddish about how deep the issues go and how much it affects the over all integrity of the structure. In my opinion, curing the pest/damage can be the best investment in the sale process. Some lenders will not make a loan on a house that has active infestation. Obtaining a clearance can be key to completing a deal.
Many of us can recommend inspectors and contractors to complete work. With that said, it is you who has to be ultimately satisfied with the choices and work completed and therefore should not simply hire someone because the agent recommends them. Be comfortable with the choice and do not lower your expectation of how the work will be completed.
As far as the exact expectation of the Berkeley neighborhood buyer, I can not comment. Here in the South Bay, I see higher and higher expectations from buyers. The investors are not out in force, so many are buyers that will actually occupy the home. With lending requirements for down payments, credit, and ratios becoming stricter and stricter, many buyers can not afford to place another dime into the home. Having a "model" like home is very valuable in the South Bay market. Even if a buyer is not shy about remodeling/repairs, they may very well not have the flexibility in cash to complete improvements.
I am a Realtor, but I do this all the time for clients. It makes a huge difference in the sale price. Realtors know what needs to be done and it is their best interests to take care of you through the selling process. Plus it's fun! 15K is not too much depending on what else is wrong with the property, (or right.)
Some buyers will deduct the pest from their offer, so you may want to consider it in your selling price.
In today's market, buyers are often willing to pay a premium for homes that don't need a lot of work, because it may be easier for them to get a mortgage than have extra cash to fix up. Often, sadly, buyers will pay more for the cosmetic upgrades than for structural improvements, but certain structural issues may be important to address, or you will be selling at a fixer price. How you prep it really will make a huge difference in the price it may sell for.
Be advised though, that quality of work matters now more than ever. Permitted work done by licensed contractors is more expensive, but offers additional protection for you as a seller.
Yes definitely, my role has been as facilitator and not Contractor. I make appointments, coordinate schedules, help align budgets, address "bang for the buck", and help keep a time line going. Licensed contractors are an absolute. Folks that want to cut corners take great risk with the transaction and that is not my cup of tea.