How does one estimated CapEx and OpEx as a brand new investor?
Naveen HimthaniPro Member
Member since 2024 · 3 posts · 6 votesHow does one estimated CapEx and OpEx as a brand new investor?
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Jeremy TaggartBusiness Member
Real Estate Agent · Pittsburgh, PA · Member since 2014 · 850 posts · 647 votes@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.
DHRE- The Jeremy Taggart Team590 Reviews
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- Investor · VA · Member since 2015 · 21k+ posts · 19k+ votes11mo
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.
7e investments53 Reviews - 11moJeremy TaggartBusiness MemberReal Estate Agent · Pittsburgh, PA · Member since 2014 · 850 posts · 647 votes
@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.
DHRE- The Jeremy Taggart Team590 Reviews - 11moG. Brian DavisPro MemberInvestor · Hatboro, PA · Member since 2016 · 3k+ posts · 890 votes
Hi @Naveen Himthani The simple approach is to estimate based on actual systems, not a generic formula. Look at the age and condition of the roof, HVAC, plumbing, electrical, water heater, windows, and major appliances. From there you can map out “remaining useful life” and annualize the cost. That gives you a realistic number instead of a random percentage.
For OpEx (repairs, maintenance, turnover), I usually model 8–12% of rents for older homes and 5–8% for newer ones. It's conservative enough to protect you without killing deals.
On offer strategy: you protect yourself by writing offers with inspection contingencies. If an inspection reveals major CapEx you didn't account for roof, foundation, sewer line, etc. you either renegotiate or walk away with your earnest money. That's exactly what contingencies are for.
I analyze deals every week for our Co-Investing Club, and the best rule of thumb I’ve learned is: use estimates that feel uncomfortably conservative. If the deal still cash flows after that, it’s usually a winner.
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.
- 11moAlfath AhmedBusiness MemberReal Estate Agent · Columbus, OH · Member since 2022 · 1k+ posts · 1k+ votes
Quote from @Naveen Himthani:
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?This is a tricky question but there is a simple answer. Due Diligence and Understanding of Material longevity.
I am a BRRRR investor and own 28 units in my market. A home is simple, you have the following big ticket items: Roof, Heating/Cooling, Electrical Panel/Wiring, Windows, Hot Water Tank, Chimney Flue, Main Stack/Sewer Stack.
Get an inspection done and understand what is new vs old. If you are doing brrrs, chances are you are replacing everything (almost). If it is a turnkey puchase, budget for these things and loop at comps to see how updated those are compared to yours.
On your calcualator, 5% capex cost, 10% maintenance.
ReafCo | Ahmed Group 533 Reviews- Contractor · Knoxville, TN · Member since 2025 · 4 posts · 1 vote10mo
Quote from @Alfath Ahmed:
Quote from @Naveen Himthani:
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?This is a tricky question but there is a simple answer. Due Diligence and Understanding of Material longevity.
I am a BRRRR investor and own 28 units in my market. A home is simple, you have the following big ticket items: Roof, Heating/Cooling, Electrical Panel/Wiring, Windows, Hot Water Tank, Chimney Flue, Main Stack/Sewer Stack.
Get an inspection done and understand what is new vs old. If you are doing brrrs, chances are you are replacing everything (almost). If it is a turnkey puchase, budget for these things and loop at comps to see how updated those are compared to yours.
On your calcualator, 5% capex cost, 10% maintenance.
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.
- 11moDrew SygitBusiness MemberProperty Manager · Royal Oak, MI · Member since 2012 · 13k+ posts · 9k+ votes
We've found Op-Ex depends on Class of Property/Tenants
Class A
Vacancy + Tenant nonPerformance: 5%
Maintenance: 5%
Class B
Vacancy + Tenant nonPerformance: 10%
Maintenance: 10%
Class C
Vacancy + Tenant nonPerformance: 20%
Maintenance: 20%
Class D
Vacancy + 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.
Logical Property Management4.9469 Reviews - Make it a top line expense, meaning have it set aside and get quotes today. Then add 5-10% annually to it. The roof, hvac, water heater, appliances, etc. This whole dollar monthly average it is futile; the roof doesn't wait for you, the fridge doesn't. This requires having deep pockets to invest. It's no longer an easy entry game, folks need to realize this.
Quote from @Naveen Himthani:
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?
It's possible the next opportunity to grab value comes up here from EOY 2025- 1st quarter of 2027, but it means you're financially and emotionally equipped to deal with prevailing sentiment that is fear driven. You also have to be capable of holding for at least 7 years, ideally 10.
I am noticing properties price right around 2019 in some markets I am looking at, just fyi. - 10moStuart UdisPro MemberAttorney · Philadelphia · Member since 2018 · 2k+ posts · 3k+ votes
@Naveen Himthani I can’t emphasize enough the importance of diligence. This includes thorough physical inspections by qualified professionals. As others have said, the remaining useful life of major systems matters far more than whether something is still functioning today. All of this should be done during your diligence period, with the ability to walk away and get your deposit back if the findings don’t make sense.
As a new investor, it’s worth bringing in specialists to review the big-ticket items—HVAC, roof, electrical, plumbing—so you can get firm quotes on anything that needs to be replaced or is nearing the end of its useful life. And honestly, even for items that aren’t close to failing, bringing these people in is a great way to learn actual costs. Always get multiple quotes. This sets you up as well as possible to plan for capex.
Since it’s a single-family home, and assuming local rules allow it, you can reduce some operating expenses by making the tenant responsible for all utilities, snow removal, lawn care, and extermination—just be sure the lease is drafted properly.
Hiring a good property manager helps, but you still need to actively manage that relationship. Where I see most PM relationships go bad is around spending authority and failure to manage vendor warranties/insurance. This happens when property managers spend without approval (or no authority limits are written into the PM agreement), use unlicensed or uninsured vendors, or even try to self-perform work they’re not qualified to handle. Most of these issues can be prevented up front by tightening the PM agreement: clear spending & authority limits, required insurance and warranty standards, and rules around who can perform work go a long way to keeping your opex under control.
- 10moArman AhmedPro MemberReal Estate Agent · Columbus Cleveland Dayton, OH · Member since 2024 · 2k+ posts · 968 votes
@Naveen Himthani
Naveen, 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.- Member since 2025 · 3 posts · 0 votes6moI think the inspection contingencies you mentioned here are the best way to truly nail down CapEx.
Quote from @Arman Ahmed:
@Naveen Himthani
Naveen, 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.
That said, I have a question if I may ask: what percentage or dollar amount do you usually assume for repairs and CapEx when you’re initially filtering deals?
From what I’ve seen, post-2000 properties might run around 45% OpEx, while pre-1980 properties can go as high as 70%. But I feel like relying on percentages alone—even before inspections—can be misleading.
For example, a property renting for $2,000 might need $200 in CapEx (10%), while an identical property (same age, size, condition) renting for $1,000 would require the same $200—which shows up as 20%. Same cost, completely different percentage.
So I’m curious—how do you personally structure your underwriting at that early stage?
- 6moVijay FriedmanBusiness MemberMiami, FL · Member since 2026 · 766 posts · 124 votes
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
- Member since 2025 · 3 posts · 0 votes6moThanks for your replies!
Quote from @Vijay Friedman:
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
- Investor · Hendersonville, NC · Member since 2016 · 498 posts · 286 votes6mo
Quote from @Naveen Himthani:
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?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.
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