We do mobile home parks so we typically are not looking for one person to do a general inspection but we hire a plumber to come out check water/sewer/gas lines for a professional opinion , same with electric , or if there is roads that look kind of questionable, we will ask a paving /concrete contractor to look at it.  

A plumber told me he will charge me $500 just to come out or I could youtube it and do it myself.  

Does anybody know any reputable contractors in San Antonio?

My level of quality is high, I stand behind my work, I've been in business over 8 years, its easy to get ahold of me, I'm not going anywhere...That being said, if someone in my area needs a referral of a subcontractor or electrician, plumber, hvac guy...I'd be happy to help if I can.  

On a typical project, here are the contractors I'll probably use:- Demo- Roofer- Painter- Carpenter- Plumber- Electrician- HVAC- Window Company- Tile Guy- Carpet Guy- Hardwood Guy- Cabinets/Countertops Company- Termite Inspection- Landscaping- Garage Door Company- House CleanerIn addition, on many projects I'll also use:- Drywall Guys- Insulation- Surveyor- Structural Engineer- Inspectors- Concrete Company- Driveway/Paving Company- Grading- Tree Trimming- Shower Glass CompanyFor big projects, new construction:- Architect- Civil Engineer- Foundation- Asbestos Removal- Sediment Control- Excavation, Dirt Hauling- Interior Sprinklers- Stone WorkEach of those contractors will typically get between 1-4 draws, depending on the scope of the work they have for the project.Then there are materials and other non-labor costs:- Permits (0-3 transactions per project)- Porta Pottys (0-3 transactions per project)- Home Depot Materials (3-5 transactions per project)- Dumpsters (1-3 transactions per project)- Paint Purchase- Cabinets/Countertops Purchase (2-4 transactions per project)- Flooring Material Purchase (1-2 transactions per project)- Specialty Material Suppliers (0-10 transactions per project)- Utility/Service Installation (0-5 transactions per project)- Private Inspections (0-5 transactions per project)- Insulation/Airtightness Tests- AppliancesOn top of that, I will potentially write several checks to:- Title Company- Property Inspector- Appraiser- General Contractor or Project Manager- Interest Payments- Utility Payments- Tax PaymentsOn top of that, I have my general business expenses:- Accounting- Legal- Interest Payments- Tax Payments- Brokerage Fees- E&O Fees- MLS Fees- Overhead/Office (Supplies, Equipment, Subscriptions, Software, etc)- Telephone/Fax/Internet- Income from Property SalesAll of these easily add up to a couple hundred transactions on a large project or new build, meaning many dozen per month. 

if so, how does one find one who is reputable?

As long as the GC is responsible for everything and reputable, according to your post above, you have a fair point.  

We can refer you to reputable contractors of all sorts that we've worked with. 

The lesson to the story is find reliable contractors/ plumber/ electrician to do the work.  

I am a Master Plumber and a gas and HVAC technician.