Home Additions | Floor Plans | Pictures | Costs

Welcome to The Best Online Catalog for Home Addition Building Plans

home addition design plans

Are you planning a home addition project and need answers or design ideas to look at? Welcome, you can consider simplyadditions.com as an authority on home addition information.


Project Questions We Have Answers to:

1. How much will it cost to build?

2. What is the addition going to look like on my ranch, colonial, or split-level home?

3. How long will it take to build the addition?


Building a home addition can be a ridiculously complicated process. Lucky for you, you found the award winning experts 

Simply Additions is more than just a website on home additions, it's a collection of all the ideas, how-to guides, and architectural plans that we developed to help our customers understand the cost and process of building any type of home addition project onto their home. 


Navigate by Sections 

Home Addition Plans

How to Find the Perfect Home Addition Plan

House Additions Building Guide

Research Tools for Addition Building

Request Free Home Addition Quote


 Home Addition Plans

Choose your Room Addition Type

Master Bedroom Designs
Add a Second Floor
in law 
Bonus Room Above 
Build a Garage: 1, 
2, or 3 Car
Adding Dormers
Sunroom Ideas


Garage Conversion
add a porch
add a deck




Move Forward by Getting Your Own Home Addition Quote

No matter who you call, read my Headache Free Guide to Building a Home Addition before your 1st estimate appointment. It’s a collection of valuable advice, which I accumulated from years of working as a general contractor. Trust me, it can save you a lot of time and money, and most importantly reduce your stress Big Time!

 Finding The Perfect Home Addition Plan in 4 Steps

Simply Additions Perspective: Think of a room addition as a simple box constructed out of lumbar, nails, and screws. Our website makes it super easy to find the right sized box (home addition) for your needs, just point and click your way to become the envy of your neighborhood.  

1. Select Category

 Pick the Room Addition Type you're looking for more information on, such as an estimate.

2. Browse All Available Plans

 Once you have the list up, browse all Home Addition Plans listed for your project type.

Home Addition Building Guide

3. Go Back For More Ideas

Return to the Start Menu to select another room addition type, so that you can compare the differences in cost and room sizes against each other. Is the box too big, too small, or just right?

4. Repeat Until Complete

 Repeat steps One, Two, and Three until you find a home addition plan that's perfect or close to what you are actually looking for. Then use our Find a Pro tool to find a proper addition builder locally. 


FAQ: Have questions? Good, because we have answers. Scroll down past the Start Menu to get relief. 


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Room Addition Ideas 9 Reasons to Love Them

  • Each Plan is Worth $1,000's
  • Used by Homeowners & Contractors
  • General Contractor Approved
  • Before & After Pic's
  • Includes Building Costs
  • Award Winning Consumer Education
  • 3D Room Designs
  • Useful Floor Plans 
  • Helps America & the UK Build Additions

Planning Room Additions to Your House 

home addition building

One thing we learned from building home additions was that today people are very busy, so we made the process of shopping for a home addition as simple as can be from your computer, tablet, or smartphone. Get estimates scheduled, print plans, and do all your research with only a few clicks.

It's easy to find a list of builders for your project, what's not so easy is getting true apples to apples estimates from them. Without using a proven system to make estimate comparisons accurate, we know for a fact that your prices will vary greatly between each contractor! How do we know this? We learned the ins and outs of addition building before we setup this surprisingly useful website.

Look, when you're spending $50,000 or $250,000 on a home addition, don't you think a building guide for $19.95 made by an award winning website, which was built by home addition builders, could save you from a couple of headaches and probably a few thousand  dollars? 
Our guide is perfect for busy people who don't have the time to go back and fourth on the phone with multiple contractors to get each contractors estimate to compare fairly against each other. It's really simple to use because the information is not rocket science, but sometimes it's the no brainer details that make all the difference in life. 
The truth is that any good contractor can provide you with this type of information, but none of them will simply because they want your business. They won't make any money from you by spending time teaching you how they get apples to apples estimates from their subcontractors. We know this for a fact because we were in the business of remodeling prior to focusing on the site alone. Turns out that websites have far less headaches than dealing with contractors and customers, but then again, Google provides us with new challenges.
Watch this video to find out more about our money saving guide that helped hundreds of busy parents gain the upper hand since it's been published. Don't be fooled by copies, we invented the guide from our years of addition building experience. 

These are the Most Popular Pages on Simply Additions Visited by Busy People Interested in Building a Home Addition

Home Addition Building Guide

An easy to follow cheat sheet to avoid typical first time addition building mistakes.

Downloaded over 7,371 since 2004!

Home Addition Articles

Buckets of popular room addition ideas, unconventional advice, and most importantly the advice only a general contractor could share with you to save you money and stress. 

These Articles won Excellence in Consumer Education Award from the Better Business Bureau

Home Addition Building Stories

Learn about the details of many home extension projects built in the lovely state of Connecticut. House transformations, homeowners purging on amenities, and people dialing up the remodel needle to Super Size Proportions: all found here

I still have customer projects I didn't post yet, expect more project write-ups this year!

Remodeling Questions & Answers Forum

For a limited time you can send in your project related questions to be answered by a general contractor. The really good questions get posted so other people in similar situations could benefit from the advice. 

Get a real shot at Asking a General Contractor about your project.

Building Process Explanation

Simply Additions explains the design build process for Additions, New Homes, & Major Renovations.

If you made an appointment using our contractor finder, read about what to expect.


A General Contractor Reveals Secrets to Addition Building

I created these room addition plans to transform my general contractor experience into information people can use to make these complex renovations a lot simpler to research and eventually build. My mission is to simplify the process of building on to your house. There are a lot of scattered articles all across the internet, but many of them are written by webmasters and bloggers instead of actual contractors. I decided to give people access to the correct method of addition building as well as provide them with access to my archive of home addition ideas, that I used to actually renovate people's houses in Connecticut. The room additions above are the most popular projects being built in America today. 


You could look elsewhere, but why would you get your remodeling advice from a writer or blogger? Get your remodeling advice from a real general contractor and your wallet will thank you later!


Finding an Addition Builder is Easy

Many of you know that a general contractor's main job is to find, hire, and manager subcontractors. Basically I'm an expert when it comes to finding the right people to help me renovate houses. You don't have to pay me a dime, to get a list of contractors I personally would call for an estimate appointment. Simply fill out the form below, and you'll get an email with a list of contractors that I would give to my own family to call. It's that simple. No Account Creation, No Fee, No Hassle. Take that Angies List!



How To Get More Out of Simply Additions

  • Download my exclusive home addition guide to make your project simpler to manage. I love to make things simpler for people, that's why I call myself ProvenHelper. Look for my channel on YouTube and Follow Me on Twitter @ProvenHelper
  • Visit the How-to Articles section and read the contractor hiring guides. I won awards from many prestigious sources for these highly useful tips that can protect you from shady contractors and their contracts. Learn what most consumers have no ideas about, by listening to what this general contractor reveals. 


Questions About Building A Home Addition

Contact me through Twitter or Google plus if you have any questions. I'm remodeling the website to make it easier to use and even more useful than it is today. The site already won many awards for consumer education from the Better Business bureau but I will make it even better, by listening to your suggestions through social media or email.


Have a Project Related Question?

Chances are I already answered it. Simply go to the Q&A forum below and browse there first. You could also use the search engine at the top of the screen. 

Homeowner Q&A Forum

LASTLY, don't forget to look for me on social media (buttons at top of page), I go by Lex. I'll be happy to answer your questions.

Want a No Obligation Estimate?

No matter who you call, read my How-to Save Money on Your Home Addition Project. I'll show you how to save thousands of dollars, just like the professionals do.

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