How does one estimated CapEx and OpEx as a brand new investor?

Question

Hi experts!I am brand new to real estate investing and wanting to enter the market in Pittsburgh, PA. I have started my research on understanding all aspects of finding good deals. I am looking to invest in a SFR for a long term rental. Positive Cashflow is the goal I have in mind. There are some expenses like property management rates (I am on a visa so cannot do myself legally) and vacancy which I can ballpark by getting in touch with management firms. I don't know how to go about estimating CapEx and OpEx? Is there a conservative ballpark estimate (as a percentage of property value perhaps) which most investors use to analyze deals?Since one can only get estimates in the very beginning, what margin on cashflow makes people decide to go forward and make an offer on a property? Lets say the offer is accepted and later on during inspection something comes up which makes your CapEx increase and Cashflow go negative, how does one back out of the deal? Is there an intermediate step in "making an offer" that I am missing?

Chris Seveney · Answer

I am a fan of doing it analytically vs. just carrying an amount. For example, for capex I will look at estimated life expectancy of things like HW heater, A/C, appliances, roof, windows etc. Then estimate the cost and determine a price. For example if the roof has 15 years left and its $15k, I carry $1,000 per year for that item. HW heater if its 8 years and 1200 then I carry $150/year.

For opex, that is little tougher to determine as you will have vacancy and turnover, which you can estimate what each turnover will cost you and how long.

Real estate is expensive to maintain, so make sure you have plenty of reserves. Always easier to have extra money than no money.

Jeremy Taggart · Answer

@Naveen Himthani the housing stock in Pittsburgh is mostly very old, so you will always want to be more conservative with your capex and maintenance numbers here compared to areas where the properties are newer. It really comes down to the individual property as well and how well it's been maintained/age of the current capex items.

In most cases though on single family homes, for maintenance and capex I like to use at least $150 each for both of those per month. I don't like using percentages for those numbers because a house renting for $1,000 is going to have the same (or more) capex and maintenance expense as a house renting for $2,000 that's the same size/age.

Vacancy you are usually good with 5% and property management will be 8-10% depending on location/rent of the house.

If you are new you will likely have an inspection contingency with your offer, so you can re negotiate or back out of the deal if after the inspection things aren't looking as good on the property as you anticipated.

If cash flow is your main focus though, you may want to look at multi family over single family. Those tend to have better rent/price ratios than single family homes here and are located in the same neighborhoods.

Single family I more so prefer if you are doing heavy renovation with BRRRR or flipping. They are more or less just going to be break even/cash flow just a tad right off the bat with the higher interest rates/prices of today, assuming your standard 20-25% down. Unless of course you are using lower leverage than anything will cash flow.

Vijay Friedman · Answer

Good question, this is where most beginners get stuck.

You don’t need perfect numbers early, you need conservative assumptions.

Quick baseline most investors use:

• Vacancy: 5–8%
• Maintenance/CapEx: 8–12% of rent
• Property management: 8–10% (since you’ll need it)
• Taxes/insurance: actuals

If the deal still works after that, it’s worth a deeper look.

On cash flow, don’t aim for “barely positive.”
You want a buffer, especially as a new investor.

On your last point (very important):You don’t fully commit when you make an offer.

You protect yourself with:

• inspection contingency
• financing contingency

If CapEx comes in higher during inspection, you can:

• renegotiate
• or walk away

That’s normal.

Most deals don’t fail because of CapEx—they fail because people were too optimistic upfront.

If you want, send me a sample deal. I can show you how to quickly underwrite it like a lender would

Timothy Kneller · Answer

As a chimney sweep I can indeed confirm that the chimney flue is often something overlooked when considering capex, and something that can be hit or miss on your home inspector catching.

Arman Ahmed · Answer

@Naveen HimthaniNaveen, most new investors start with simple percentage rules to underwrite quickly: 5–8% of rent for ongoing repairs and routine OpEx, and another 5–10% of rent for CapEx depending on the age and condition of the big-ticket items like roof, HVAC, plumbing, and electrical. These aren’t market-specific, just conservative national guidelines. Your offer should always include an inspection contingency so if the inspection reveals a major CapEx hit that kills your cashflow, you can renegotiate or walk away without penalty. The goal is to use rough estimates to filter deals, then use the inspection phase to finalize real numbers. If you want, I can share how I structure underwriting for my rentals and help you build a template.

Drew Sygit · Answer

We've found Op-Ex depends on Class of Property/Tenants

Class AVacancy + Tenant nonPerformance: 5%Maintenance: 5%Class BVacancy + Tenant nonPerformance: 10%Maintenance: 10%Class CVacancy + Tenant nonPerformance: 20%Maintenance: 20%Class DVacancy + Tenant nonPerformance: 40%Maintenance: 40%Tenants have a big impact on the above. The lower credit score & overall demographics, the higher the damages they cause.

CAPEX: in our experience, most SFR investors figure this out when they get their property inspection while purchasing. Then, they just deal with issues as they arise.- MFR: depends on type. If units have separate heating & hot water heater units, really the only thing you have to plan for is replacing the roof and parking lot. Everything else can be done on unit basis.

Steve K. · Answer

The best way is to do an actual analysis of the specific property like Chris described. How long do you plan to own the property and what do you expect it to need during your ownership. If the furnace is 25 years old and its life expectancy is 20, budget for a new furnace during your ownership. A new furnace may be $8k, let’s say you will hold for 10 years so that’s $66/ month for that one item. Do this with all of the mechanicals, windows, roof, driveway, decks, gutters, appliances, cosmetics, etc. That you expect to have to address during your ownership. It’s a bit of a blend between an art and a science, and your accuracy will depend on how experienced you are maintaining properties. Over the past 15 years my properties have averaged $300-500/mo. in repairs/ maintenance/ capex, so I use $500/mo. there for a quick analysis then do a deeper dive and look into the specifics of the property more in depth if I go under contract on it, during the inspection contingency. As a beginner you should 100% have a good buyers agent who can explain the contract and your contingencies, dates and deadlines, dos and donts etc. for you. For vacancy/ loss  I am using 5-8% depending on exact location because that is about how long it takes to fill a unit in my market (3-5 weeks). Most of my properties don’t turn over every year so this is maybe a tad conservative but accounts for black swan events like an eviction or longer than usual vacancy. You will find very few properties in today’s market that provide upfront cash flow day one “off the shelf”, and they will be in less ideal locations and probably won’t actually provide any cashflow in reality even if they do in your spreadsheet. A better play in these market conditions is buying the worst house in the best location you can afford, then fixing it up to the quality of the surrounding properties to force appreciation and increase rents (value add). Over time, a property in a good location will always out perform a property in a bad location in both cash flow and appreciation, so basically the main criteria I pay attention to over all others is location, location, location.

Dominic Mazzarella · Answer

For OpEx, just use a rough % to start so you don’t lie to yourself. Something like 40–50% of rent all-in is a decent conservative ballpark for a basic rental. Then tighten it up later with real numbers (taxes, insurance, PM quotes, etc.).

CapEx, think big stuff only. Roof, HVAC, water heater. Look at age and just spread the cost over remaining life. If you don’t know, assume it’s sooner and more expensive.

On offers, you’re not locked in right away. You’ll have an inspection/due diligence period. If numbers change or something major pops up, you either renegotiate or walk.

Main thing early on is just don’t be optimistic. Deals that barely work on paper usually don’t work in real life.

How does one estimated CapEx and OpEx as a brand new investor?

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