FHB Logo Facebook LinkedIn Email Pinterest Twitter X Instagram Tiktok YouTube Plus Icon Close Icon Navigation Search Icon Navigation Search Icon Arrow Down Icon Video Guide Icon Article Guide Icon Modal Close Icon Guide Search Icon Skip to content
Subscribe
Log In
  • How-To
  • Design
  • Tools & Materials
  • Restoration
  • Videos
  • Blogs
  • Forum
  • Magazine
  • Members
  • FHB House
  • Podcast
Log In

Discussion Forum

Discussion Forum

explain cost plus?

alwaysoverbudget | Posted in General Discussion on December 3, 2003 08:01am

over turkey the other day at my brother in laws,were talking about the remodel he’s having done. i ask him what the estimate is on the project [this is a large addition] he says he doesn’t know a figure because the builder is doing it for cost plus 20%.he understands that the guy is going to spend 60k on materials and charge him 12k labor,total of 72k.[by the way he has been working on this since sept. 1] i think the guy is going to charge 60k plus 20.00 per hour [or whatever his labor rate is]x 1000 hours = 20k plus the 60 for a total of 80k x20% for a total of 96k for total project.this took him by surprise .i just don’t see how a 1 guy and a helper could make wages if 12k is all they make.if his way is how this works, i’ll try and hire the guy for my next project. let me know how you guys do a cost plus addition/house .thanks

Reply
  • X
  • facebook
  • linkedin
  • pinterest
  • email
  • add to favorites Log in or Sign up to save your favorite articles

Replies

  1. DavidThomas | Dec 03, 2003 08:42am | #1

    I'll let others who do cost+ work comment on the main thrust of your question. My only cost+ work has been for engineering services for the federal government. And then there are a lot of rules and laws to obey.

    But I'll add the additional variable of list price versus a contractor's discount. Heck, as an owner builder, they happily gave me 10% off everything. GC's ought to get 15-30% off list prices (lumber, fasteners, siding, sheetrock, etc). Plumbing can run 50-80% off list price. But they give you two invoices. One showing list and the other discounted one that they expect the contractor to pay from. So which invoice will your brother pay 120% of?

    In some ways it is fair, certainly if the time spent calling out, specifying, ordering, running to get materials, and going back for the odd bits isn't billed to the job.

    David Thomas   Overlooking Cook Inlet in Kenai, Alaska
    1. User avater
      kbrod7 | Dec 03, 2003 12:31pm | #2

      Below is a link to a simplified but typical cost plus contract.  Be careful though, many G.C.'s have long standing relationships with subcontractors.  This can lead to two invoices, one for the GC and one for the owner.  You would be wise to get multiple references from past customers he has worked with on this basis.  Unless of course the GC is willing to give you a guaranteed maximum price which is a totally differnt contract.  Chances are your brother has received an estimated total price which can be easily inflated during the process.  However, if the contractor is reputable it can be a fair contract for both parties.

      http://www.elsiecom.com/webforms/COST%20PLUS%20P15.DOC

    2. calvin | Dec 03, 2003 03:29pm | #4

      David,  

      "GC's ought to get 15-30% off list prices (lumber, fasteners, siding, sheetrock, etc). Plumbing can run 50-80% off list price. But they give you two invoices." 

       Perhaps this is the case in Alaska.  Admittedly being a one man operation, volume could dictate my discounts.  However, I have never gotten more than 10% off lumber, usually the 2% for pmt by the 10th.  Plumbing and electrical-25%.  These discounts are off the price the regular consumer would expect to pay. 

      Most folks think our discounts are more like you describe and it gets aggravating trying to defend any upcharge to material costs.

      To the original poster.  I use a cost plus billing almost totally.  I will give an estimate of the total cost of the job from X to Y.  It's a from / to estimate.  The total job will fall in a price range.   We then proceed on a time/material basis plus 10% of the total job cost.  I take all labor, material, subcontractors and add 10% to reach the total.  The customer benefits on the material side by getting plumbing / electrical at a 15% savings from the list price.  I use no double invoicing.  Trust is a big thing in this type of arrangement and my business thrives on it.Remodeling Contractor just outside the Glass City.

      Quittin' Time

      1. davidmeiland | Dec 03, 2003 06:58pm | #6

        "To the original poster.  I use a cost plus billing almost totally.  I will give an estimate of the total cost of the job from X to Y.  It's a from / to estimate.  The total job will fall in a price range.   We then proceed on a time/material basis plus 10% of the total job cost.  I take all labor, material, subcontractors and add 10% to reach the total.  The customer benefits on the material side by getting plumbing / electrical at a 15% savings from the list price.  I use no double invoicing.  Trust is a big thing in this type of arrangement and my business thrives on it."

        Calvin, when you say labor plus 10% what is the labor rate? Is there already a profit built into that, or are you charging labor at actual cost (wage + taxes + comp + sick / vacation etc.)? Just curious. Also, 10% is very low for the industry, in my experience.

        The last two companies I worked for charged a labor rate for each man, usually about 200% of the hourly wage figure, and when invoicing T&M jobs, the profit and overhead (usually 25%) was added to that too. Actual cost of labor was about 150% of wage, so there were 'two profits' being made on labor, one in the rate and one in the markup. We invoiced directly from the actual sub or material invoices--never seen or heard of double invoicing. Our invoice would list all of the labor, subs, and materials, and the 25% added at the bottom. On many occasions I invited clients to the office to review all of the invoices for their job. No one ever took me up on it, but it was a major trust-building thing.

        I can't imagine being involved in double-invoicing--someone somewhere will let it slip and the client will drag you behind their Mercedes when they find out. It's fraud unless the contract states that 'cost' is what a typical consumer would pay, not what the contractor is actually paying. A client who was being billed that way and found out could probably win a claim for fraud once they forced the contractor to open his books for the court.

        I'd like to hear how others out there who do T&M handle labor. Is there a markup on labor too or do you just stick with an hourly rate for labor and then add markup to subs/materials only?

        1. buckethead | Dec 03, 2003 08:01pm | #7

          I know I am not the norm but this is how my contract works....

          I build high end homes($300-750/sf) that usually have no interior details developed when we are starting the project. It is virtually impossible to hard bid these projects.I develop a budget with allowances based on historical data I have from past similar projects, and a wild #### guess. I include liability insurance as a line item, because I am in California and we might as well treat the lawyers like the expense they are.

          I then add 15-20%as my profit and overhead, on this budget figure. This becomes a fixed amount in my T&M contract with the client. I divide this figure by the months of duration of the project and bill it each month.

          I charge actual invoices for all my subs, material and labor. Labor is hourly, plus burden(taxes, insurance, vacation) My supervision time as well as my project managers time are also charged to the job, on an hourly basis, I charge the same rate for both of us, no need to gouge folks. My system does not penalize the owner for the decisions they are to make. My budget is a guideline for them to make those choices and choose items free from a penalty. The reality is it costs me the same to manage my subs and suppliers and any difficult installations my guys go through, or changes made by the owners are paid for by the owners.

          I have had to compete on projects against others that charge a lower %fee, but charge as they go, on everything. The jobs I have lost in this circumstance were probably lost to the false sense of economy this lower % rate appeared to be. Most of my new work comes from referrals from Architects in the area that know my business practices and happy past clients

          1. Piffin | Dec 03, 2003 09:12pm | #9

            I would be one of those with a lower percentage of mark up, but I find your approach interesting as a way to fix that part of the cost. I do remo rather than new work and it is not uncommon for a customer to grow another addition or change an additional room adding to the number of months involvement for me. I add my percentage on every invoice.

            BTW, I think we all agree that labor is a cost item - in ref to the original poster's situation. But it surprises me that the builder would be this far into the job without a clarifying contract stipulating all those details or haviong requested a progress payment and invoice of some sort.

            Of course, it could be that he will be one posting here in four months asking, "Why can't I get my customer to pay me?"

            LOL.

            Excellence is its own reward!

          2. brownbagg | Dec 04, 2003 12:43am | #10

            alot of companies that we work is cost plus. Thats total cost- material, labor, secertary, mailing, truck, etc plus 15%. The only problem we must summit reciept for each dollar spent. Time card, gas receptd, postal meter, copy meters etc,

            The best employee you can have but you wouldn't want him as a neighbor " He the shifty type"

          3. davidmeiland | Dec 04, 2003 01:23am | #11

            Why not include secretary, truck, mailing, etc., in the percentage as overhead? Having to document all of that stuff is really time consuming. They expect you to log every stamp and envelope?

          4. HeavyDuty | Dec 04, 2003 01:32am | #12

            >>The only problem we must summit reciept for each dollar spent. Time card, gas receptd, postal meter, copy meters etc,

            That would be a pain in the ...

            Seems like you're the only one who brought up the overhead issue, I am sure the rest would have put it into the contract somewhere. Without going into details like you were running a law office, how do you think we can realistically address the issue.

        2. calvin | Dec 04, 2003 02:09am | #13

          David, the labor rate is 35/hr.  The most I think is possible here in this area, eventho I have heard of others charging more (you know the story, a bunch charging less, a few charging more).  That rate includes the cost of doing business.  The 10% is profit only, tho I do call it overhead/profit.  Hope I'm not guilty of fraud in that case.

          I also receive 99% of my work from direct former customer referral so competitive bidding is not usual.  They only ask a "how much" so they can see if it's affordable.  Rarely, oh too rarely, do they not ask.  To be the recipient of clients with more than enough..................man, that would be heaven.

          Boy, good thing sonny or jerold haven't read my business practices yet.  Jeesh, I don't think I could take the criticism.  My problem is I'm thinking too much of the consumer and not enough about me, the provider. 

          Crap.Remodeling Contractor just outside the Glass City.

          Quittin' Time

      2. DavidThomas | Dec 03, 2003 09:06pm | #8

        "Perhaps this is the case in Alaska. Admittedly being a one man operation, volume could dictate my discounts. However, I have never gotten more than 10% off lumber, usually the 2% for pmt by the 10th. Plumbing and electrical-25%. These discounts are off the price the regular consumer would expect to pay.

        Most folks think our discounts are more like you describe and it gets aggravating trying to defend any upcharge to material costs."

        Not trying to aggravate you, but . . . . I've gotten 30% off Grainger's prices in San Francisco (which is hardly the Great White North). 50-80% off plumbing is what I saw in Western Massachusetts (several different supply houses). But we really cranked and plumbed a house a day, almost every day so the volume was good.

        I'm glad to read that other posters here are using a % over their actual costs. But all the suppliers I noted above generate double invoices with different prices. My (cynical?) assumption has been that some other contractors make use of the inflated one.David Thomas   Overlooking Cook Inlet in Kenai, Alaska

        1. calvin | Dec 04, 2003 02:23am | #14

          Thanks david for explaining the volume and please don't misunderstand my agravation.  How was the lumber disco if you're familiar with it?  I would think a builder using alot of wood would certainly get a bigger break than this lowly remodeler.Remodeling Contractor just outside the Glass City.

          Quittin' Time

          1. DavidThomas | Dec 04, 2003 05:08am | #15

            "How was the lumber disco if you're familiar with it?  I would think a builder using alot of wood would certainly get a bigger break than this lowly remodeler."

            I was speaking of the moderate sized GC who starts 2 new houses a month.  Maybe keeping 12-15 guys busy.   A house-a-year solo spec builder would get 10% off like I do.

            That said, nothing prevents you from asking for a better discount.  Best timing would be when you got a big order to place.  Figure out who makes the decision and, in the guise of teetering between two suppliers, ask what discount rate they'll give you.

            We've had two outlets in town for a long time.  Keeps things competetive.  Home Depot opens in 15 days.  That will be interesting.  Hopefully it will get the clueless DIYers out of the local supplier's aisles and get them over where they belong - talking to clueless people in orange aprons while dodging forklifts.David Thomas   Overlooking Cook Inlet in Kenai, Alaska

          2. brownbagg | Dec 04, 2003 05:45am | #16

            the best yard we have around here is open 6am to 4pm monday thru friday. Closed on sat and sun and 4:01 during the week. 6am every morning delievery truck pull out of yard loaded. They sell wood, wood and more wood. No plumbing, no electrical no fancy door, no appliance. They are a true contractor yard. If a DIYer walk in, they eat his lunch. I know, it was me. But they have best prices and best wood. They cull their own wood while they load your truck. Culled wood get cut into stakes.

            What I like is, by the time you get outside with your ticket, somebody already waiting by the wood stack (radios) HD and Lowes cannot compete with these people. family owned

            The best employee you can have but you wouldn't want him as a neighbor " He the shifty type"

  2. BobKovacs | Dec 03, 2003 02:22pm | #3

    Sounds like your brother in law should have gotten some more clarification of what is and what isn't included in the "plus".  Personally, I'd say you are closer to reality- cost of materials, labor and subs "plus" 20%.  You're BIL is assuming that the contractor's labor is part of the "plus"- I've never seen it done that way, but hopefully it's shown in his contract one way or the other. 

    Also, if they've been working since Sept. 1, I'm assuming your BIL has received a partial invoice- the breakdown on that invoice for work completed so far should clear things up.

    Bob

    1. alwaysoverbudget | Dec 03, 2003 04:32pm | #5

      thats another scary thing about this,the gc has asked for no payments yet. he has to have 35-45k invested in materials plus maybe 600 hours,that alone would scare me,not having a clue what has been spent! thanks

Log in or create an account to post a comment.

Sign up Log in

Become a member and get full access to FineHomebuilding.com

Video Shorts

Categories

  • Business
  • Code Questions
  • Construction Techniques
  • Energy, Heating & Insulation
  • General Discussion
  • Help/Work Wanted
  • Photo Gallery
  • Reader Classified
  • Tools for Home Building

Discussion Forum

Recent Posts and Replies

  • |
  • |
  • |
  • |
  • |
  • |
View More Create Post

Up Next

Video Shorts

Featured Story

Shoulder Your Buckets

Add a strap for easy carrying and pouring when working with 5-gal. buckets.

Featured Video

SawStop's Portable Tablesaw is Bigger and Better Than Before

The 10-in. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws.

Related Stories

  • Fight House Fires Through Design
  • Making the Move to Multifamily
  • Custom Built-ins With Job-Site Tools
  • An Easier Method for Mitered Head Casings

Highlights

Fine Homebuilding All Access
Fine Homebuilding Podcast
Tool Tech
Plus, get an extra 20% off with code GIFT20

"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Fine Homebuilding Magazine

  • Issue 332 - July 2025
    • Custom Built-ins With Job-Site Tools
    • Fight House Fires Through Design
    • Making the Move to Multifamily
  • Issue 331 - June 2025
    • A More Resilient Roof
    • Tool Test: You Need a Drywall Sander
    • Ducted vs. Ductless Heat Pumps
  • Issue 330 - April/May 2025
    • Deck Details for Durability
    • FAQs on HPWHs
    • 10 Tips for a Long-Lasting Paint Job
  • Issue 329 - Feb/Mar 2025
    • Smart Foundation for a Small Addition
    • A Kominka Comes West
    • Making Small Kitchens Work
  • Issue 328 - Dec/Jan 2024
    • How a Pro Replaces Columns
    • Passive House 3.0
    • Tool Test: Compact Line Lasers

Fine Home Building

Newsletter Sign-up

  • Fine Homebuilding

    Home building tips, offers, and expert advice in your inbox.

  • Green Building Advisor

    Building science and energy efficiency advice, plus special offers, in your inbox.

  • Old House Journal

    Repair, renovation, and restoration tips, plus special offers, in your inbox.

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters

Follow

  • Fine Homebuilding

    Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

    Start Free Trial Now
    • Facebook
    • Instagram
    • X
    • LinkedIn
  • GBA Prime

    Get instant access to the latest developments in green building, research, and reports from the field.

    Start Free Trial Now
    • Facebook
    • YouTube
  • Old House Journal

    Learn how to restore, repair, update, and decorate your home.

    Subscribe Now
    • Facebook
    • Instagram
    • X
  • Fine Homebuilding

    Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

    Start Free Trial Now
    • Facebook
    • Instagram
    • X
    • LinkedIn
  • GBA Prime

    Get instant access to the latest developments in green building, research, and reports from the field.

    Start Free Trial Now
    • Facebook
    • YouTube
  • Old House Journal

    Learn how to restore, repair, update, and decorate your home.

    Subscribe Now
    • Facebook
    • Instagram
    • X

Membership & Magazine

  • Online Archive
  • Start Free Trial
  • Magazine Subscription
  • Magazine Renewal
  • Gift a Subscription
  • Customer Support
  • Privacy Preferences
  • About
  • Contact
  • Advertise
  • Careers
  • Terms of Use
  • Site Map
  • Do not sell or share my information
  • Privacy Policy
  • Accessibility
  • California Privacy Rights

© 2025 Active Interest Media. All rights reserved.

Fine Homebuilding receives a commission for items purchased through links on this site, including Amazon Associates and other affiliate advertising programs.

  • Home Group
  • Antique Trader
  • Arts & Crafts Homes
  • Bank Note Reporter
  • Cabin Life
  • Cuisine at Home
  • Fine Gardening
  • Fine Woodworking
  • Green Building Advisor
  • Garden Gate
  • Horticulture
  • Keep Craft Alive
  • Log Home Living
  • Military Trader/Vehicles
  • Numismatic News
  • Numismaster
  • Old Cars Weekly
  • Old House Journal
  • Period Homes
  • Popular Woodworking
  • Script
  • ShopNotes
  • Sports Collectors Digest
  • Threads
  • Timber Home Living
  • Traditional Building
  • Woodsmith
  • World Coin News
  • Writer's Digest
Active Interest Media logo
X
X
This is a dialog window which overlays the main content of the page. The modal window is a 'site map' of the most critical areas of the site. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page.

Main Menu

  • How-To
  • Design
  • Tools & Materials
  • Video
  • Blogs
  • Forum
  • Project Guides
  • Reader Projects
  • Magazine
  • Members
  • FHB House

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Popular Topics

  • Kitchens
  • Business
  • Bedrooms
  • Roofs
  • Architecture and Design
  • Green Building
  • Decks
  • Framing
  • Safety
  • Remodeling
  • Bathrooms
  • Windows
  • Tilework
  • Ceilings
  • HVAC

Magazine

  • Current Issue
  • Past Issues
  • Magazine Index
  • Subscribe
  • Online Archive
  • Author Guidelines

All Access

  • Member Home
  • Start Free Trial
  • Gift Membership

Online Learning

  • Courses
  • Project Guides
  • Reader Projects
  • Podcast

More

  • FHB Ambassadors
  • FHB House
  • Customer Support

Account

  • Log In
  • Join

Newsletter

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Follow

  • X
  • YouTube
  • instagram
  • facebook
  • pinterest
  • Tiktok

Join All Access

Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.

Start Your Free Trial

Subscribe

FHB Magazine

Start your subscription today and save up to 70%

Subscribe

Enjoy unlimited access to Fine Homebuilding. Join Now

Already a member? Log in

We hope you’ve enjoyed your free articles. To keep reading, become a member today.

Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine.

Start your FREE trial

Already a member? Log in

Privacy Policy Update

We use cookies, pixels, script and other tracking technologies to analyze and improve our service, to improve and personalize content, and for advertising to you. We also share information about your use of our site with third-party social media, advertising and analytics partners. You can view our Privacy Policy here and our Terms of Use here.

Cookies

Analytics

These cookies help us track site metrics to improve our sites and provide a better user experience.

Advertising/Social Media

These cookies are used to serve advertisements aligned with your interests.

Essential

These cookies are required to provide basic functions like page navigation and access to secure areas of the website.

Delete My Data

Delete all cookies and associated data