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

Building codes and structure sizes

pampine | Posted in Business on March 16, 2006 04:18am

As far as building codes are concerned (in general, don’t expect anyone here to know specifics in Austin), what defines a structure size? For example, if I have a 24 X 34 floor/deck on which sit 4 little buildings, say 10 X 15 each separated by decking, do I have a single 24 X 34 structure or 4 little structures? And if I have a roof that covers the full 24 X 34, does that make a difference?

Austin claims they follow a uniform code.

Thanks,
Pam

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

Replies

  1. philarenewal | Mar 16, 2006 04:36pm | #1

    You might be thinking your local zoning code.  How many "buildings" is the lot zoned for?  What is the use group of each "building"?

     

    "A job well done is its own reward.  Now would you prefer to make the final payment by cash, check or Master Card?"

    1. pampine | Mar 16, 2006 04:43pm | #2

      I can have two residences plus accessory buildings, or 1500 sqft more space; but I only want to add one building to the house, a workshop/studio/guest bed & bath/office. My real concern is jacking up my property taxes, as is Austin's; so if I can call this structure 4 sheds/accessory buildings, I don't have to file for a building permit and the assessment office won't care so much about it, may never even hear of it. The city is also concerned about impervious cover (I'm OK here) and setbacks (also OK).Pam

      1. User avater
        bobl | Mar 16, 2006 04:48pm | #3

        think yo need to talk to the local authoriities snce it is so dependent on them.example a detached garage in my town is taxed higher than an attached garage.iy's how they interpret that is important. 

        bobl          Volo, non valeo

        Baloney detecter

      2. philarenewal | Mar 16, 2006 11:17pm | #10

        Hey Pam, I don't think I can go much further for how the assessor in Austin might treat this.  Where I am, to have another structure (whatever it is) considered a separate building, the lot has to be zoned for 2 buildings, and they have to be separated by either demising walls (fire rated) or at least 3 feet.

        For permits here, add a square inch and you got to have one.

          

        "A job well done is its own reward.  Now would you prefer to make the final payment by cash, check or Master Card?"

        1. pampine | Mar 17, 2006 12:37am | #11

          Sure, understood, thanks anyhow.Pam

      3. philarenewal | Mar 17, 2006 05:15pm | #15

        I was thinking about this again last night, and it's remarkable how much difference tax policy can make in how things are done in different places.

        Where I am, we'd fight tooth and nail for the opposite -- to have everything defined as a single structure.  Separate structure gets a separate tax bill.

        I do see that the whole point is to avoid the permit so the assessor doesn't run out and reassess.  Just interesting how different it is. 

        "A job well done is its own reward.  Now would you prefer to make the final payment by cash, check or Master Card?"

        1. pampine | Mar 17, 2006 05:37pm | #16

          Yes, our laws are kind of like menus in poor restaurants, more what they'd like to have rather than what they actually do have. Our tax laws as implemented are what our various governments actually want us to do. So while society says it wants us to marry, tax laws say you'll do better if you don't.My current workshop, a tiny 10 X 12 structure, doesn't even get honorable mention on my tax bill; therefore, I assume that additional very small structures will be the same. :) But my real goal is to not see a city assessor at all for several years.Pam

  2. User avater
    BillHartmann | Mar 16, 2006 05:15pm | #4

    "Austin claims they follow a uniform code."

    That is not exactly true.

    They pass ordinaces to adopt specific versions of specific codes.

    And those ordinaces will also include exceptions and changes to the model codes.

    Now I did a google on Austin, Tx building code - and foudn the site details.

    http://www.ci.austin.tx.us/development/bpinfo1.htm

    " Which building codes has the City of Austin adopted? The City of Austin is currently under the following building codes:

    2000 International Energy Conservation Code
    2000 International Residential Code - for residential construction
    2003 International Building Code - Commercial construction
    2003 Uniform Plumbing Code - Commercial
    2003 Uniform Mechanical Code - Commercial
    2005 National Electrical Code - All electrical installations

    Ordinance 011129-78 adopted the 2000 International Energy Conservation Code on November 29, 2001. Additionally, the city has adopted the Uniform Building Conservation Code, Uniform Housing Code, and Uniform Dangerous Buildings Code as they pertain to reuse and maintenance of existing buildings. "

    Now there also links to the ordinances on that page.

    Looking at the changes to the IBC they restrict aux structures under 120 sq ft so each unit is already over.

    However, I did not see any changes in the IRC on that part and the IRC excepts anything less than 200 sq ft.

    But even if each unit is less than that needs a premit I suspect that they will treat multiple units that are connected by a common structure as one unit.

    1. pampine | Mar 16, 2006 06:24pm | #5

      Thanks, Bill. Austin's top level documents, the ones that specify in general who and what requires a building permit, say less than 200 sqft needs no permit. However, when I got to the part you quoted, I knew I was lost; and when I tried to read the online detail documents, to find out about decks and the like, I couldn't properly access the docs, not sure why, probably a Win/Mac thing.Anyhow, you and Bob are probably correct, I'll have to draw it and review with someone at the building office.Pam

  3. User avater
    CapnMac | Mar 16, 2006 06:56pm | #6

    Austin claims they follow a uniform code.

    LoL!  Oh, I needed that laugh.  Austin claims so many things . . .

    If I remember the rules for in Travis Co rightly (having done much more work out in Williamson), the "kind" of deck will become the rule.  That, and the zoning.

    Most of Austin will require variances for multiple buidings in residential zoning on single lots.  Note, that if you have a multiple lot as single property situation, that you may not (absolutely) have that restriction.

    So, if you have separate foundations, you will generally have separate buildings, even if all the buildings are connected by a continuous deck surface (like a patio).

    Hmm, what sort of structure are you thinking of/working with?

    I'm trying to imagine a case of having a continuous, weather-tight deck/patio/lanai with some sort of continuous foundatiuon edge beam, that also will support structures without additional foundation.

    Details, I want details <g> (I want a paid vacation, too, not holding my breath <g> . . . )

     

    Occupational hazard of my occupation not being around (sorry Bubba)
    1. pampine | Mar 16, 2006 10:55pm | #8

      Wow, the kind of deck will matter? I didn't know there was more than one kind. I'd have to guess covered or not? You seem to be saying that a walkway/patio would be another type of deck?

      I'm not sure whether I'll have to have a variance or not. This won't be a second residence, although it may become one when I get too old and tired to do woodworking and other studio type stuff. In 2004 the city took us through this abomination of a neighborhood planing event, lasted months, and their goal seemed to be increased density since we're supposed to double in size very quickly. Along those lines, the planners recommended things like second and third residences on single lots. I just don't know yet (have a call in) what actually passed and whether it involved some zoning chance for my house.

      I'm trying to imagine a case of having a continuous, weather-tight deck/patio/lanai with some sort of continuous foundatiuon edge beam, that also will support structures without additional foundation.

      That pretty much describes what I want to do, much better than I could have done. Perhaps I can provide partial joy for you. I'll be building a Japanese influenced timber frame workshop/studio that will have a guest room and bath. I'm working on the plans now.

      Pam

      1. User avater
        CapnMac | Mar 17, 2006 12:45am | #12

        That pretty much describes what I want to do, much better than I could have done. Perhaps I can provide partial joy for you. I'll be building a Japanese influenced timber frame workshop/studio that will have a guest room and bath. I'm working on the plans now. Pam

        Ok, that kind of jibes with what I was getting from the rest of the answers.

        We built a dojo off up the Colorado that would be a similar sort of thing.  It really was one great big platform, with only three weather-tight spaces (and a boatload of shoji in tracks all around).  Now, that one was treated as if the foundation line was the building limits for P&D purposes.  The insurance company wsa only interested in "heated area."

        Ok, the tough part may be getting P&D "on board" with your idea.  It sounds rather like your "walled" (for want of a better term) area will be liej the negative image of a "plus" sign.  Might just be easy as giving the total area (and not splitting it into Area 1, Area 2, etc.) on the plans and see what they say.

        Where I wanted to be sure of what you're doing, is that if you had four separate buildings, each with their own foundation, you could (generally) "deck" them all together, and no (P&D) body would give it a second thought. 

        Hmm, going more "pure" Japanese might actually be better.  That would be a free-standing (no perimeter foundation at all) surface.  Ok, so you have some corner posts that go through the deck to bearing points underneath--so what?  Hmm,  might be the thing, call it a multi-purpose (single) structure, but only specifiy "finished room" area.Occupational hazard of my occupation not being around (sorry Bubba)

        1. pampine | Mar 17, 2006 06:48am | #13

          Oops, I lied, there is no perimeter foundation, all pier and beam. I've got to learn to be more literal about these terms. We got the piers, beams, joists, and subfloor done before being stopped by a code compliance inspector. There had been a neighborhood association complaint about "unsanitary debris," which was not true. It was all building materials. Nevertheless, we were ordered to stop construction.I'd planned three walled areas with the fourth corner being essentially a shoji laden veranda, a 16 X 24 open area for the main bench and hand tool work area. So not quite a cross, the left horizontal is missing, but not far off.Pam

          1. User avater
            CapnMac | Mar 17, 2006 04:37pm | #14

            Sounds like one building to me.

            Now, how big is that building will (might) be a sticking point.

            What you might want to do, is to take the plans & elevations, and set up a meeting with the P&D people.  Often, you can ask to have an informal appointment with either the Planning or the plan review people.  Explain that you have a unique situation, and you want a sense of what their opinion would be (note, make no promises of on or off record, let the P&D people decide that).

            Since you are going to have very similar foot-print and roof overhang lines, the "sticking point" will be in what is the "official" area, per the AHJ.  If you can get them to say, "We say it's xxxx sf," you can then (try to) beat up the Travis Co Property Assement people if they come bring you a "surprise" next tax season.

             Occupational hazard of my occupation not being around (sorry Bubba)

          2. pampine | Mar 17, 2006 05:40pm | #17

            Great idea, CapnMac, let the planning people decide what I'll have when done. Then they'll have no complaints.Pam

          3. User avater
            CapnMac | Mar 17, 2006 08:00pm | #18

            let the planning people decide what I'll have when done. Then they'll have no complaints

            LoL!

            Planning people with no complaints . . . that's funny on so many levels <g> . . .

            Getting their "read" though can help.  You definitely need to be in the "middle" of the process, though, otherwise they can occasionally get a bit snippy (which almost always requires a good balance in the checking account to fix . . . <sigh>).

            Your exsiting "shed" is permisible (likely) as it's under the 150sf "rule" (a much abused rule).  That's part of why I suggested just asking for an informal meeting with somebody over to P&D, it's partially to "show" that you are not intending on scofflawry.  You just hava unique sort of situation that may have a simple answer desipte seeming complicated.

            The P&D people will have come across those who pushed the envelope, and for less-than noble reasons.  Like bolting 7 120sf sheds together, and claiming that they were a "temporary structure" . . . (stupid councilman; dumber still to complain when the burned down, too . . . )Occupational hazard of my occupation not being around (sorry Bubba)

          4. pampine | Mar 17, 2006 09:59pm | #19

            I thought that might amuse you. :)Anyhow, I plan to be meek but assertive, ask for their help but knowledgeable, new at this but competent....Pam

          5. User avater
            CapnMac | Mar 17, 2006 11:45pm | #20

            I plan to be meek but assertive

            oHo my, if that is not the prescription for dealing with the modern muni P&D department . . .

            That, and patience, endless patience . . . Occupational hazard of my occupation not being around (sorry Bubba)

  4. pickings | Mar 16, 2006 08:52pm | #7

    "I have a roof that covers the full 24 X 34, does that make a difference?"

    Normally.....one roof....one floor......one building. Ask your insurance co too.

    1. pampine | Mar 16, 2006 10:56pm | #9

      Excellent point to check with my insurance company. I'll do that.Thanks,
      Pam

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

A Modern California Home Wrapped in Rockwool Insulation for Energy Efficiency and Fire Resistance

The designer and builder of the 2018 Fine Homebuilding House detail why they chose mineral-wool batts and high-density boards for all of their insulation needs.

Related Stories

  • Keeping It Cottage-Sized
  • Townhouse Transformation
  • Mortar for Old Masonry
  • Grout-Free Shower Panels

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