---
title: "Home Additions In Urbandale, IA | Busy Builders"
description: "Home additions in Urbandale, IA start at $300/sqft. Busy Builders builds room additions, primary suites, second-story additions, ADUs & more. Free estimate."
url: "https://busybuildersiowa.com/locations/home-additions-urbandale-ia/"
---

# Home Additions Urbandale, IA

Urbandale is one of the Des Moines metro’s most established west-side suburbs, with neighborhoods that have been maturing since the 1970s and 1980s.

Lot sizes in Urbandale are tighter than in newer outer-ring suburbs, and many families choose to stay rather than move when they need more space.

Busy Builders designs and builds home additions across Urbandale that match the existing structure, meet Iowa building code, and hold up through decades of freeze-thaw cycles and clay soil movement.

99%

Satisfaction Rate​

[Get Your Free Estimate](https://busybuildersiowa.com/contact-us/)

1285+

Completed Projects​

## Full-Service Home Addition Construction in Urbandale

### About Us

Since 2020, Busy Builders has completed over 1,285 construction and remodeling projects across Central Iowa. We build home additions for Urbandale families who need more space and want it done right the first time.

Every addition we build is designed to match the existing home’s structure, style, and systems. When the project is done, it should feel like it was always there.

### Our Mission

Honest pricing, a clear written plan, and no surprise charges on every home addition we take on in Urbandale.

We tell you exactly what your project requires before a single permit is filed. We do not upsell scope the addition does not need.

### Our Vision

We want to be the registered general contractor that homeowners in [Urbandale](https://busybuildersiowa.com/urbandale/), [West Des Moines](https://busybuildersiowa.com/west-des-moines/), [Johnston](https://busybuildersiowa.com/johnston/), [Grimes](https://busybuildersiowa.com/grimes/), [Ankeny](https://busybuildersiowa.com/ankeny/), and [Clive](https://busybuildersiowa.com/clive/) call first when the house is not big enough anymore.

[Learn More About Us](https://busybuildersiowa.com/about-us/)

- Home Additions Step by Step

## How Do We Build Your Home Addition in Urbandale?

Step #1

### ASSESSMENT & DESIGN

Every home addition in Urbandale starts with a full assessment of the existing structure before any design work begins.

We evaluate the foundation, first-floor framing, roof structure, and mechanical systems to understand what the home can support and where connections need to be made.

Urbandale sits on Iowa’s expansive clay soil, and the frost line runs 42 inches deep. Both factors affect foundation depth and footing design on every addition type, and we account for both before a single drawing is produced.

You get a written scope of work, design, and timeline before any work begins or any contract is signed.

- Full structural assessment of existing foundation, framing, and mechanical systems
- Site evaluation covering Urbandale clay soil conditions, frost line depth, and drainage
- Written scope of work, design, and timeline confirmed before any work starts

[Schedule Your Assessment](https://busybuildersiowa.com/contact-us/)

Every home addition in Urbandale requires a building permit, and most require structural drawings submitted with the application.

The City of Urbandale Building and Development Services Department administers permits for residential construction within city limits. Each submission goes through a plan review process before approval is issued.

We file all required permits, submit structural drawings, coordinate with third-party engineers where required, and schedule all inspections as part of the project scope.

Unpermitted additions create real problems at resale, with insurance carriers, and with mortgage lenders. Review the [Iowa DIAL permit submission process](https://dial.iowa.gov/licenses/building/how-do-i-submit-construction-plan-review) for Urbandale-specific requirements.

- Permit application filed with Urbandale Building Services as part of every project scope
- Structural drawings submitted where required by the Urbandale plan review process
- All inspections scheduled and coordinated, so the homeowner does not have to manage a thing

[Learn More About the Permit Process](https://busybuildersiowa.com/home-additions/)

Step #2

### PERMITS & APPROVALS

Step #3

### SITE PREP & DEMOLITION

Site prep includes removing existing exterior walls, siding, or other materials at the connection point between the new addition and the existing home.

This step also covers grading, drainage correction, and any landscaping removal needed to clear the footprint.

In Urbandale’s established neighborhoods, where mature trees and tight lot lines are common, utility locates are completed before any excavation begins, per Iowa law.

Existing mechanical penetrations at the connection point are identified and protected during demolition so they can be properly integrated during the build.

- Exterior wall, siding, and material removal at the addition connection point
- Site grading and drainage correction before foundation work begins
- Utility locate completed before any excavation, per Iowa law

[Schedule Your Site Prep](https://busybuildersiowa.com/contact-us/)

The foundation is the most critical structural element of any home addition in Urbandale.

Footings are set below the 42 inch frost line on every project without exception. Iowa clay soil expands when wet and contracts when dry, adding lateral pressure to footings and foundation walls year-round.

We match the new foundation type to the existing home’s foundation and the addition’s structural requirements.

Poured concrete walls, block foundations, and monolithic slabs are all used depending on the addition type. Footing inspections are scheduled and completed before any concrete is poured.

- Footings set below Urbandale's 42 inch frost line on every project
- Foundation type matched to existing home and addition structural requirements
- Footing inspection scheduled and completed before concrete is poured

[Learn More About Foundation Requirements](https://busybuildersiowa.com/locations/home-additions-des-moines-ia/)

Step #4

### FOUNDATION & FOOTINGS

Step #5

### FRAMING & STRUCTURAL CONNECTIONS

Framing is where the addition takes physical shape and where the connection to the existing home becomes permanent.

Load-bearing connections between the new and existing structure are engineered and built to carry the full design load. Headers, beams, and posts are sized per Iowa building code for the spans and loads involved.

Second-story additions on Urbandale homes require particular attention here. The existing first-floor framing must be confirmed to carry the new load before walls go up.

All framing lumber is pressure-treated where it contacts concrete, and structural hardware is rated for outdoor exposure at all connection points.

- Load-bearing connections between new addition and existing structure engineered and built to spec
- Headers, beams, and posts sized per Iowa building code for all spans and loads
- Pressure-treated lumber at all concrete contact points per Iowa and IRC code requirements

[Learn More About Framing Requirements](https://busybuildersiowa.com/navigate-iowa-residential-construction-regulations-with-ease/)

Basement permits here follow Urbandale’s process: The Department of Community Development handles permits at 3600 86th Street.

The roof transition between the addition and the existing home is one of the most detail-critical steps in the entire build.

A poorly executed roofline transition is the most common source of water intrusion in home additions across Urbandale and Central Iowa.

We flash all roof-to-wall connections, valleys, and penetrations using materials compatible with the existing roofing system. Exterior sheathing, housewrap, and siding are installed to create a continuous moisture barrier from the foundation to the roofline.

Siding is matched to the existing home as closely as possible so the addition reads as part of the original structure from the street.

- Roofline transition flashed and waterproofed at all connection points to the existing home
- Continuous moisture barrier from foundation to roofline on all exterior walls
- Siding matched to existing Urbandale home for a seamless finished appearance

[Learn About Home Addition Costs](https://busybuildersiowa.com/iowa-home-building-costs-2025-your-complete-guide-to-pricing-and-savings/)

Step #6

### ROOFING & EXTERIOR ENVELOPE

Step #7

### WINDOWS & EXTERIOR DOORS

Windows and exterior doors go in once framing and roofing are complete and rough opening sizes are confirmed.

Window selection for Urbandale additions must balance thermal performance with Iowa’s temperature extremes. Temperatures in Urbandale range from well below 0°F in winter to above 95°F in summer, making low-E glass and proper installation critical for year-round energy performance.

All windows and doors are flashed and sealed at the rough opening before interior work begins.

Egress windows are installed in any bedroom added as part of the addition, per Iowa building code requirements.

- Window and door installation with proper flashing and sealing at all rough openings
- Low-E glass and Iowa-climate-rated thermal performance specifications for every window
- Egress windows installed in all addition bedrooms per Iowa building code

[Learn More About Choosing the Right Windows](https://busybuildersiowa.com/outdoor-living-integration-blurring-indoor-remodel/)

Urbandale operates under Iowa State building codes, including the International Building Code (IBC), International Residential Code (IRC), 2020 National Electrical Code (NEC), and Uniform Plumbing Code (UPC). Our crews build to those editions from the first framing plan.

Mechanical rough-in covers all plumbing, electrical, and HVAC work done while walls are open.

This is the least expensive time to run new supply lines, drain lines, circuits, and ductwork. Access is open, and work can be planned around the framing before anything is closed in.

We assess whether the existing HVAC system in your Urbandale home can handle the added square footage before extending any ductwork. Iowa NEC 2023 with state amendments governs all electrical work, and all plumbing is inspected to Iowa code.

All rough-in work is done by licensed electricians and licensed plumbers, pulled with permits, and inspected before drywall closes the walls.

- Plumbing, electrical, and HVAC rough-in completed while walls are open
- Existing HVAC load capacity assessed before any ductwork is extended into the addition
- Licensed electricians and plumbers on all mechanical work, permitted and inspected

[Learn More About the Code](https://busybuildersiowa.com/hvac-replacement-vs-repair-when-to-upgrade-your-remodel/)

Step #8

### MECHANICAL ROUGH-IN: PLUMBING, ELECTRICAL & HVAC

Step #9

### INSULATION INSTALLATION

Insulation in an Urbandale home addition must meet or exceed Iowa’s energy code requirements and perform through the full range of Iowa’s temperature extremes.

Spray foam is used on rim joists and at all penetrations where air sealing is critical. Batt or blown-in insulation fills wall and ceiling cavities, depending on framing depth and R-value requirements.

Iowa’s 42 inch frost line and below-grade conditions affect insulation choices for additions with basement or crawl space components. Getting this step right determines whether the addition stays comfortable in January.

Read more about [Iowa home building costs](https://busybuildersiowa.com/iowa-home-building-costs-2025-your-complete-guide-to-pricing-and-savings/) to understand how insulation choices affect the overall project budget.

- Spray foam air sealing at rim joists and all penetrations throughout the addition
- Wall and ceiling insulation meeting Iowa energy code R-value requirements
- Below-grade insulation matched to Urbandale frost line depth and moisture conditions

[Learn About Insulation Specs](https://busybuildersiowa.com/insulation-upgrades-attic-walls-and-basement/)

Drywall goes up once all mechanical inspections are passed and insulation is complete.

We hang, tape, mud, and sand every surface to a smooth paint-ready finish that matches the texture and finish level of the existing home. Urbandale homes from the 1970s and 1980s often have distinct interior details, and we take care to match them so the transition is not obvious.

Flooring selection is coordinated with the existing home so transitions between spaces feel intentional rather than patched. Paint colors, trim profiles, door hardware, and light fixture styles are matched to the existing interior throughout.

Read our guide on [how to prepare your Iowa home for a remodel](https://busybuildersiowa.com/how-to-prepare-your-iowa-home-for-a-remodel/) to understand what to expect during the interior finish phase.

- Drywall finish matched to existing Urbandale home texture and finish level throughout
- Flooring coordinated with existing home for seamless transitions between old and new spaces
- Trim, paint, hardware, and fixture styles matched to existing interior design

[Prep Your Home for Drywall](https://busybuildersiowa.com/how-to-prepare-your-iowa-home-for-a-remodel/)

Step #10

### DRYWALL, FLOORING & INTERIOR FINISHES

Step #11

### FINAL WALKTHROUGH & CLEAN UP

Multiple districts serve Urbandale: Urbandale Community School District (J-Hawks, serving 4,000+ students with 6 elementary schools, 1 middle school, and Urbandale High School), Dallas Center-Grimes, Des Moines, Johnston, Waukee, and West Des Family demand like that keeps finished basements moving at resale.

The final walkthrough is where we go through every room of the addition together before calling the project complete.

We check every surface, connection, and finish detail side by side with the homeowner. Every plumbing fixture, electrical outlet, light switch, HVAC register, and GFCI circuit is tested before the walkthrough begins.

If anything does not meet the standard we set at the start of the project, we fix it before handoff.

The crew removes all tools, materials, debris, and protective coverings so the addition is clean and ready to use from day one. All permit documentation and inspection records are delivered at project close, protecting your investment at resale and with your insurance carrier.

- Full room-by-room inspection of every surface, connection, and finish detail with the homeowner
- Function test on all plumbing, electrical, HVAC, and GFCI outlets before handoff
- Complete debris removal and clean up, plus permit and inspection records delivered at project close

[Get Your Home Addition Quote](https://busybuildersiowa.com/contact-us/)

- Achievement

## Trusted Home Addition Contractors in Urbandale

Since 2020, over 1,285 Central Iowa homeowners have trusted Busy Builders to build and remodel their homes, and it shows.

1285+

Completed Projects​

90+

Skilled Workers​

99%

Satisfaction Rate​

- Frequently Asked Questions

## FAQs About Home Additions in Urbandale

How much does a home addition cost in Urbandale?

Home additions in Urbandale start at $300 per square foot and vary based on addition type, finish level, and structural complexity.

A basic room addition with standard finishes typically runs $300 to $400 per square foot. A more complex addition with custom finishes, a full bathroom, or second-story structural work often runs $400 to $600 or more per square foot.

The biggest cost variables in Urbandale are foundation depth requirements driven by the 42 inch frost line, existing structural reinforcement needs on older homes, and mechanical integration complexity. Urbandale’s well-established neighborhoods include homes built over several decades, and the structural condition of each home affects the starting point for any addition.

Busy Builders provides a detailed written estimate before any work begins. The national average for construction is about $162 per square foot per the [NAHB 2024 Cost of Construction Survey](https://www.census.gov/construction/soc/) , Urbandale addition pricing reflects the full scope including permits, structural assessment, and design coordination. Costs vary by scope, materials, and complexity.

Do I need a permit for a home addition in Urbandale?

Yes, without exception. Every home addition in Urbandale requires a building permit, and most require structural drawings submitted with the application.

The City of Urbandale Building and Development Services Department administers residential building permits. Urbandale has its own submission and review process separate from the City of Des Moines.

Unpermitted additions create serious problems at resale, with mortgage lenders, and with homeowners’ insurance carriers.

Busy Builders files all permits, submits all required drawings, and schedules all inspections as part of every project scope. Review the [Iowa DIAL permit submission process](https://dial.iowa.gov/licenses/building/how-do-i-submit-construction-plan-review) for Urbandale-specific requirements. You can also read our guide on [Iowa home addition permits](https://busybuildersiowa.com/navigating-home-building-permits-in-iowa/) for a broader overview of the process.

How long does a home addition take to build in Urbandale?

Most home additions in Urbandale run 3 to 6 months from permit approval to final walkthrough, depending on size, complexity, and addition type.

A straightforward room addition on an existing foundation can be completed in 10 to 14 weeks. A second-story addition or ADU with full mechanical systems typically runs 4 to 6 months.

Permit processing time through Urbandale’s Building and Development Services is the most variable factor. Plan review timelines can shift based on submission volume and plan completeness.

Busy Builders builds all permit timelines into the project schedule upfront so there are no surprises mid-build. See our overview of [home additions in Central Iowa](https://busybuildersiowa.com/home-additions/) for more detail on what to expect at each phase.

Will the addition match the rest of my Urbandale home?

Yes, matching the existing home is a core part of how we design and build every addition in Urbandale.

Rooflines, siding profiles, window styles, interior trim, and flooring transitions are all specified during the design phase. The goal is for the addition to read as part of the original structure, not something added on after the fact.

This matters especially in Urbandale’s established neighborhoods, where homes from the 1970s through the 1990s have consistent architectural character on the street. We also match the mechanical systems so heating, cooling, and electrical all feel seamless throughout the connected space.

Read our guide on [whole house remodel vs. room by room](https://busybuildersiowa.com/whole-house-remodel-vs-room-by-room/) if you are weighing an addition against a broader remodel of your Urbandale home.

Can I add a bathroom or kitchen to my Urbandale home addition?

Yes. Bathrooms and kitchens can be incorporated into any room addition, ADU, or second-story addition in Urbandale.

Plumbing rough-in happens while walls are open during the mechanical phase. That is the most cost-effective time to run new supply and drain lines through an Urbandale home.

Bathroom additions in Central Iowa typically add $15,000 to $40,000 to the project cost, depending on size and finish level. Kitchen additions are priced based on square footage and appliance and cabinet layout complexity.

Both are scoped and priced in the written estimate before any work begins. See our [kitchen remodeling](https://busybuildersiowa.com/kitchen-remodeling/) and [bathroom remodeling](https://busybuildersiowa.com/bathroom-remodeling/) service pages for finish-level detail. Costs vary by scope, materials, and complexity.

Is a home addition better than finishing my basement in Urbandale?

It depends on what you need the space for and what your Urbandale home already has below grade.

A finished basement adds usable square footage at a lower cost per square foot. But it appraises below grade, meaning it contributes less to resale value than above-grade addition square footage under Fannie Mae appraisal rules.

A home addition costs more per square foot but adds fully appraised living area. For Urbandale families who need a bedroom, a home office, or a primary suite, an addition delivers above-grade space that a basement cannot provide.

Read our full breakdown of the [finished basement vs. home addition in the Des Moines metro](https://busybuildersiowa.com/finished-basement-vs-home-addition-in-des-moines-metro-which-is-the-best-investment-for-2026/) before making the decision. You can also explore [basement remodeling](https://busybuildersiowa.com/basement-remodeling/) if below-grade space is the better fit for your situation.

- Newest Blogs

## Home Addition Blogs for Urbandale Homeowners

[Learn More About Home Additions](https://busybuildersiowa.com/category/home-additions-blogs/)

[August 23, 2026](https://busybuildersiowa.com/home-addition-cost-state-center-iowa-2026/) | By [Blake Daniels](https://busybuildersiowa.com/author/blake-daniels/)

### [Home Addition Cost in State Center, Iowa: 2026 Guide](https://busybuildersiowa.com/home-addition-cost-state-center-iowa-2026/)

Home additions in State Center start at $300 per square foot. Cost by type, Iowa frost line requirements, and how small-city inspection works.

[August 12, 2026](https://busybuildersiowa.com/home-addition-cost-panora-iowa-2026/) | By [Blake Daniels](https://busybuildersiowa.com/author/blake-daniels/)

### [Home Addition Cost in Panora, Iowa: 2026 Guide](https://busybuildersiowa.com/home-addition-cost-panora-iowa-2026/)

Home additions in Panora start around $300 per square foot. Cost by type, the city's contracted inspection process, and what actually drives the budget.

[August 11, 2026](https://busybuildersiowa.com/home-addition-costs-urbandale-2026/) | By [Blake Daniels](https://busybuildersiowa.com/author/blake-daniels/)

### [Home Addition Costs in Urbandale: 2026 Pricing Guide](https://busybuildersiowa.com/home-addition-costs-urbandale-2026/)

Home additions in Urbandale start at $300 per square foot. Cost by type, the city's permit portal, and how local code amendments affect your project.

Tagged [Urbandale](https://busybuildersiowa.com/tag/urbandale/)

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Costs vary by scope, materials, and complexity."}},{"@type":"Question","name":"Do I need a permit for a home addition in Urbandale?","acceptedAnswer":{"@type":"Answer","text":"Yes, without exception. Every home addition in Urbandale requires a building permit, and most require structural drawings submitted with the application.The City of Urbandale Building and Development Services Department administers residential building permits. Urbandale has its own submission and review process separate from the City of Des Moines.Unpermitted additions create serious problems at resale, with mortgage lenders, and with homeowners’ insurance carriers.Busy Builders files all permits, submits all required drawings, and schedules all inspections as part of every project scope. Review the Iowa DIAL permit submission process for Urbandale-specific requirements. You can also read our guide on Iowa home addition permits for a broader overview of the process."}},{"@type":"Question","name":"How long does a home addition take to build in Urbandale?","acceptedAnswer":{"@type":"Answer","text":"Most home additions in Urbandale run 3 to 6 months from permit approval to final walkthrough, depending on size, complexity, and addition type.A straightforward room addition on an existing foundation can be completed in 10 to 14 weeks. A second-story addition or ADU with full mechanical systems typically runs 4 to 6 months.Permit processing time through Urbandale’s Building and Development Services is the most variable factor. Plan review timelines can shift based on submission volume and plan completeness.Busy Builders builds all permit timelines into the project schedule upfront so there are no surprises mid-build. See our overview of home additions in Central Iowa for more detail on what to expect at each phase."}},{"@type":"Question","name":"Will the addition match the rest of my Urbandale home?","acceptedAnswer":{"@type":"Answer","text":"Yes, matching the existing home is a core part of how we design and build every addition in Urbandale.Rooflines, siding profiles, window styles, interior trim, and flooring transitions are all specified during the design phase. The goal is for the addition to read as part of the original structure, not something added on after the fact.This matters especially in Urbandale’s established neighborhoods, where homes from the 1970s through the 1990s have consistent architectural character on the street. We also match the mechanical systems so heating, cooling, and electrical all feel seamless throughout the connected space.Read our guide on whole house remodel vs. room by room if you are weighing an addition against a broader remodel of your Urbandale home."}},{"@type":"Question","name":"Can I add a bathroom or kitchen to my Urbandale home addition?","acceptedAnswer":{"@type":"Answer","text":"Yes. Bathrooms and kitchens can be incorporated into any room addition, ADU, or second-story addition in Urbandale.Plumbing rough-in happens while walls are open during the mechanical phase. That is the most cost-effective time to run new supply and drain lines through an Urbandale home.Bathroom additions in Central Iowa typically add $15,000 to $40,000 to the project cost, depending on size and finish level. Kitchen additions are priced based on square footage and appliance and cabinet layout complexity.Both are scoped and priced in the written estimate before any work begins. See our kitchen remodeling and bathroom remodeling service pages for finish-level detail. Costs vary by scope, materials, and complexity."}},{"@type":"Question","name":"Is a home addition better than finishing my basement in Urbandale?","acceptedAnswer":{"@type":"Answer","text":"It depends on what you need the space for and what your Urbandale home already has below grade.A finished basement adds usable square footage at a lower cost per square foot. But it appraises below grade, meaning it contributes less to resale value than above-grade addition square footage under Fannie Mae appraisal rules.A home addition costs more per square foot but adds fully appraised living area. For Urbandale families who need a bedroom, a home office, or a primary suite, an addition delivers above-grade space that a basement cannot provide.Read our full breakdown of the finished basement vs. home addition in the Des Moines metro before making the decision. You can also explore basement remodeling if below-grade space is the better fit for your situation."}}]}]}
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