Originally posted by @Ethan Wilson:
Hey guys, I'm looking at my buying my first SF home for a house-hack. It needs a good amount of work, and I don't have much experience with estimating rehab costs. Would it be best to find a general contractor who could come walk the property with me and give an estimate before I make an offer? Or what is some advice to avoid under/overestimating these costs? Thanks!
Yes, if you aren't comfortable estimating costs on your own then you need to team-up, partner, or hire a GC as a consultant that can help you estimate your first few projects.
Since you don't have a property under contract, and GC's are extremely busy right now you are probably going to have a hard time finding a GC that will give you an estimate for free, so be prepared to pay them a few hundred dollars for their services.
Be upfront with the General Contractor and tell them your situation that you are a new investor that is trying to learn how to estimate rehab costs and that you need a detailed "menu" of prices that you can use to help budget in the future.
You should give them a detailed list upfront of everything you would expect them to price so they can easily put together a SOW and estimate for the project.
Ultimately, you need to learn how to estimate rehab costs on your own so you don't have to rely on a GC to put together an estimate.
Here is the process I recommend to learn the basics so you can start to feel more comfortable estimating rehab costs and putting together budgets:
#1 Read 'The Book on Estimating Rehab Costs'
First, you need to build a foundational knowledge of construction, inspecting properties and putting together a detailed SOW.
JScott's 'The Book on Estimating Rehab Costs' is a great resource for new rehabbers to learn how to Estimate Repair Costs on 25 common rehab repairs.
https://www.biggerpockets.com/store/the-complete-g...
#2 Explore Lowes and Home Depot to Learn About Material Pricing
Take a tour through Lowes and Home Depot (or their websites) and look at finishes materials and fixtures that you will consider using in your rehab projects. This will help you get a better idea of what tile, hardwood, carpet, plumbing fixtures and light fixtures costs for your rehabs.
#3 Contact Local Contractors for Labor Pricing / Hire a GC to Consult
Call local Subcontractors and get budget pricing for common repairs on your typical rehab project.
For example, call a roofer and ask what their average cost per Square of Architectural Asphalt Shingle Roofing would be on a 1,500 sf house, with a 6/12 pitch.
Note: Some contractors will be reluctant to share pricing without seeing the property, but tell them you are just looking for a rough budget number you can use on future projects.
You can also pay a General Contractor a consulting fee of a couple of hundred dollars (per house) to walkthrough a few properties with you and provide a detailed estimate of prices that you can use as your 'menu for future projects.
#4 Compile Your Prices into a Spreadsheet or Estimating Software
Once you start to get a better understanding of Labor and Material costs you will want to store this data into a spreadsheet or software that you can use to help you streamline the estimating process.
The Book on Estimating Rehab Costs comes with a spreadsheet that you can use to help you populate your own database of labor pricing and material pricing. Or you can download my estimating templates I have in my Biggerpockets fileplace:
Simple Estimate Spreadsheet
Detailed Estimating Spreadsheet
There are other Estimating Softwares available as well which can help you manage the Estimating process as well...
#5 Practice, Practice, Practice
Walkthrough potential rehab properties (or find properties virtually online) and practice creating detailed scopes of work, quantifying repairs and estimating rehab costs for the projects.
#6 Get Your First Rehab Project
You can practice all you want, but ultimately you will learn the most about estimating rehab costs by actually rehabbing a house. Getting your first rehab project will require you to create a SOW, talk to contractors, compare and review bid proposals, review budgets, & make countless trips to Home Depot.
You will inevitably make mistakes and underestimate things, but you will learn 90% of what you know by just doing your first rehab!