---
title: "Home Addition Cost In Diamondhead Lake, Iowa: 2026 Guide"
description: "What a home addition costs in Diamondhead Lake in 2026. Cost by type, Iowa frost line requirements, small-area permitting, and septic considerations."
url: "https://busybuildersiowa.com/home-addition-cost-diamondhead-lake-iowa-2026/"
---

- Construction and Remodeling Guide

# Home Addition Cost in Diamondhead Lake, Iowa: 2026 Guide

- [Blake Daniels](https://busybuildersiowa.com/author/blake-daniels/)
- September 1, 2026
- [Home Additions](https://busybuildersiowa.com/category/home-additions-blogs/)

![Home addition with new foundation and framing tied to an existing Diamondhead Lake Iowa house](https://busybuildersiowa.com/wp-content/uploads/2026/07/home-addition-cost-diamondhead-lake-iowa-2026.png)

Diamondhead Lake is a lake community in Guthrie County where many homes started as smaller getaways and grew into year-round residences. That history means a lot of these houses are prime candidates for an addition. This guide covers what additions cost in 2026, what Iowa’s frost line requires, how permitting works in a smaller Iowa area, and where addition budgets go sideways.

Busy Builders Team, Registered Iowa Contractor #C140184.

Published: September 1, 2026 | Last Updated: September 1, 2026

**TLDR:** Home additions in Diamondhead Lake start at **$300 per square foot**, putting a 400 square foot addition near $120,000 before upgrades. Foundations must reach below Iowa’s frost line, generally 42 inches. Smaller Iowa areas often contract building inspection to an outside firm rather than staffing an inspector, so schedule inspections well ahead. Utility capacity and roof tie-in drive cost more than square footage does.

---

## What You Are Actually Buying

An addition is not a larger room. It is a new structure joined to an existing one, and every junction between new and old is where cost appears.

You are paying for a foundation below Iowa’s frost line, framing that ties into existing structure, a roof that marries the existing roofline without leaking, and utilities extended from a panel and plumbing stack sized for the original house. Any one of those can be straightforward. All four rarely are.

Lake-area homes carry an extra wrinkle. Many were built in phases over the years, so the existing structure you are attaching to may itself be a patchwork. That is worth knowing before you design.

**Pro Tip 1:** Before you fall in love with a floor plan, open your electrical panel and count empty breaker slots. A full panel means a service upgrade, and that is a real line item.

## Addition Cost in Diamondhead Lake by Type

A bedroom or office addition runs $60,000 to $105,000, and a primary suite with bath $115,000 to $185,000. Two-story additions cost the most at $180,000 to $310,000, and additions with plumbing cost more per square foot.

Addition type Typical size Planning range Primary cost driver

Bedroom or office 200 to 300 sq ft $60,000 to $105,000 Foundation and roof tie-in

Primary suite with bath 350 to 500 sq ft $115,000 to $185,000 Plumbing extension

Family room 400 to 600 sq ft $120,000 to $200,000 Span and window count

Sunroom (conditioned) 200 to 350 sq ft $65,000 to $130,000 Glazing and HVAC capacity

Two-story addition 600 to 900 sq ft $180,000 to $310,000 Structural work and stair placement

Attached garage 400 to 700 sq ft $80,000 to $170,000 Slab, doors, and approach

The consistent pattern: additions with plumbing cost meaningfully more per square foot than additions without. A bedroom is framing and finishes. A primary suite adds a wet wall tied into an existing drain stack.

**Pro Tip 2:** If your addition includes a bathroom, place it on the wall nearest existing plumbing. Ten feet of distance can mean several thousand dollars.

## Permits and Frost Line

Home additions change structure and require a building permit, plus separate trade permits for electrical and other work.

Something worth understanding about smaller Iowa areas: many do not employ a full-time building inspector. They contract the inspecting official function to an outside engineering firm that serves multiple communities. That arrangement works fine, but it changes your scheduling, because an inspector covering several areas needs more lead time than one in the building next door.

Iowa’s statewide residential floor moved to the 2024 International Residential Code effective September 10, 2025 under Iowa Administrative Code 481, chapter 301. Cities adopt building and fire code editions on their own schedules, so confirm current local adoption before designing.

Iowa requires foundations to extend below the frost line, generally 42 inches. That is not optional and not adjustable. Every addition with a permanent foundation carries that excavation and concrete cost regardless of what sits on top.

If your property sits in unincorporated Guthrie County, county rather than city rules apply, and confirming which jurisdiction covers your address is the right first step.

Iowa requires general contractors earning $2,000 or more annually to register with the Department of Inspections, Appeals, and Licensing. Registration is not licensing. Electricians, plumbers, and HVAC technicians hold separate state licenses.

**Pro Tip 3:** Confirm whether your address is inside a city, in unincorporated county, or in a lake association area. Each can carry different requirements.

**Pro Tip 4:** Ask who performs inspections and how far ahead they need to be scheduled. In smaller areas this is often the longest lead item in the whole project.

## What Drives Diamondhead Lake Addition Costs

Extending plumbing to a new bath adds the most at $4,000 to $12,000. Septic and well considerations vary significantly on lake properties, and an HVAC capacity increase runs $3,000 to $9,000.

Cost driver Typical impact Notes

Electrical service upgrade $2,500 to $6,000 Common on older lake homes

Extending plumbing to a new bath $4,000 to $12,000 Distance from the stack is the variable

HVAC capacity increase $3,000 to $9,000 Existing systems often cannot cover new load

Roof tie-in complexity $2,000 to $8,000 Phased-built homes have complex rooflines

Septic or well considerations Varies significantly Common on lake and rural properties

Matching existing siding and windows $1,500 to $6,000 Discontinued products drive this up

The septic and well row matters here. Many lake-area homes are on private systems rather than municipal utilities, and adding bedrooms can affect septic sizing requirements.

**Pro Tip 5:** If your home is on a septic system, raise that in the first conversation. Adding bedrooms can trigger a review of whether your existing system is adequate.

**Pro Tip 6:** Photograph your existing siding, windows, and roof shingles before your first contractor meeting. Product matching is far easier to solve early.

## Illustrative Scenarios

Illustrative scenario: A Diamondhead Lake couple added a 280 square foot bedroom and sitting area off the back of a home that had grown from a seasonal cabin. The panel had room, no plumbing was involved, and the roof tied in cleanly. The project came in near $86,000 across about eleven weeks including inspection scheduling.

Illustrative scenario: A Guthrie County family added a 440 square foot primary suite with a full bath. Plumbing ran roughly eighteen feet to the existing stack, the septic system needed evaluation for the added bedroom, and HVAC required additional capacity. The project reached about $165,000 over roughly seventeen weeks.

Illustrative scenario: A homeowner near Diamondhead Lake built a 640 square foot two-story addition over a new foundation. Structural work, a new stair, and a service upgrade brought the project to roughly $270,000 across about seven months.

**Pro Tip 7:** Tie your payment schedule to completed milestones, not calendar dates. Milestones protect you when weather or plan review slows things down.

**Pro Tip 8:** Never accept a bid that omits foundation depth. In Iowa that number separates a permanent addition from a future problem.

## Realistic Timeline

A modest addition takes three to four months, and a two-story addition closer to six or seven. Design and engineering take three to eight weeks, and contracted inspection adds time to permit review.

Phase Typical duration Notes

Design and engineering 3 to 8 weeks Structural work extends this

Permit and plan review 2 to 5 weeks Contracted inspection adds time

Site work and foundation 2 to 4 weeks Weather dependent, frost depth required

Framing and roof 3 to 5 weeks Tie-in complexity drives this

Rough trades and inspection 3 to 5 weeks Separate trade permits

Insulation, drywall, finishes 5 to 9 weeks Longest phase, least visible progress

Punch list and final 1 to 2 weeks Final inspection required

A modest addition is a three to four month project. A two-story addition is closer to six or seven. Anyone promising a 500 square foot addition in eight weeks is describing framing, not completion.

**Pro Tip 9:** Build your schedule backward from when you need the space, then add a month. Iowa weather does not negotiate.

**Pro Tip 10:** Ask what happens if winter arrives before the addition is closed in. The answer should be specific, not reassuring.

## Getting a Quote Worth Comparing

A usable addition quote separates foundation, framing, roofing, mechanical, and finishes. It names the window and door products. It states what the allowance covers, and who pulls which permits.

**Pro Tip 11:** Ask each bidder what they assumed about your panel, HVAC, and septic. Different assumptions explain most of the gap between bids.

**Pro Tip 12:** Get a written schedule with named phases and inspection points. A schedule that is one bar labeled “construction” is not a schedule.

Our [home additions service](https://busybuildersiowa.com/home-additions/) page explains how we approach these projects. For local work, see what we do for [homeowners around Diamondhead Lake](https://busybuildersiowa.com/diamondhead-lake/). For statewide planning ranges, our [Iowa addition cost guide](https://busybuildersiowa.com/home-addition-costs-iowa-2026-planning-guide/) goes broader.

For primary sources, national residential code text is published by the [International Code Council](https://codes.iccsafe.org/content/IRC2021P1). Contractor registration is administered by the [Iowa Department of Inspections, Appeals, and Licensing](https://dial.iowa.gov/). For residential construction data, see the [U.S. Census Bureau](https://www.census.gov/construction/nrc/).

## Frequently Asked Questions

**How much does a home addition cost in Diamondhead Lake?** Additions generally start around $300 per square foot, so a 400 square foot addition begins near $120,000 and rises with plumbing, structural work, and finish level. A simple bedroom addition sits at the lower end. A primary suite or two-story addition sits well above it.

**Do I need a permit for an addition in Diamondhead Lake?** Yes. Any addition changes structure and requires a building permit, plus separate trade permits for electrical and other work. Confirm requirements and who performs inspections for your specific address, since smaller Iowa areas often contract that function and jurisdiction can vary between city, county, and lake association.

**Does adding a bedroom affect my septic system?** It can. Septic systems are sized in part by bedroom count, so adding bedrooms may trigger a review of whether your existing system is adequate. Many lake-area homes are on septic rather than municipal sewer, so raise this at the start of planning.

**How deep do foundations need to be in Iowa?** Below the frost line, generally 42 inches. That requirement is not adjustable, and it means every permanent addition carries excavation and concrete cost regardless of what sits on top. Never accept a bid that omits foundation depth.

**How long does an addition take start to finish?** Roughly three to four months for a modest single-story addition and six to seven months for a two-story. Design and permitting alone often run five to twelve weeks before ground is broken, and contracted inspection scheduling can add time.

**What is the difference between a registered contractor and a licensed tradesperson in Iowa?** Iowa requires general contractors earning $2,000 or more annually to register with the Department of Inspections, Appeals, and Licensing. That is registration, confirming insurance and tax compliance. Electricians, plumbers, and HVAC technicians hold separate state licenses involving testing.

## Key Takeaways

**Cost**

- Additions start at $300 per square foot
- Plumbing, HVAC capacity, and panel upgrades are the common surprises
- Matching existing exterior products can cost more than expected

**Lake and rural factors**

- Many homes are on septic and well rather than municipal utilities
- Adding bedrooms can trigger septic sizing review
- Phased-built homes carry complex existing rooflines

**Process**

- Foundations must reach 42 inches below grade
- Confirm city, county, or lake association jurisdiction
- Ask who inspects and how far ahead to schedule

**Timeline**

- Three to four months for a modest addition, six to seven for two-story
- Design and permit review run five to twelve weeks before groundbreaking
- Build the schedule backward and add a month for weather

## Planning an Addition in Diamondhead Lake?

We have completed 1,285+ projects across Central Iowa since 2020, including lake-area and rural properties where utilities and jurisdiction take extra planning. We will walk your property, tell you what your existing house can actually support, and give you a scope you can compare honestly.

Free consultation, no pressure, no obligation.

Call: [844-435-9800](tel:844-435-9800)

Written warranty on workmanship (details provided in your contract).

---

*Disclaimer: This article is for general information and is not project-specific advice. Cost figures are planning estimates that vary by scope, materials, site conditions, and current pricing. Permit requirements, inspection arrangements, jurisdiction, and adopted code editions vary and change over time; confirm current requirements with the authority having jurisdiction over your specific address before you rely on anything here. Structural work, including any two-story addition or load-bearing modification, requires evaluation by a qualified professional. Properties on septic systems may face additional requirements when bedrooms are added. Homes built before 1978 may contain lead paint, and federal RRP rules may apply. No specific outcomes are guaranteed. Consult a registered contractor for guidance specific to your project, and note that electrical, plumbing, and mechanical work is performed by licensed trade professionals.*

Busy Builders | Full-Service Construction and Remodeling | Serving Central Iowa Since 2020

[PrevPrevious GuideBasement Finishing Cost in Marshalltown: 2026 Guide](https://busybuildersiowa.com/basement-finishing-cost-marshalltown-2026/)

[Next GuideKitchen Remodel Cost in Bondurant: 2026 Planning GuideNext](https://busybuildersiowa.com/kitchen-remodel-cost-bondurant-2026/)

#### In This Guide

Want A Free Quote?

- Keep Reading

## More Construction and Remodeling Guides

### [Primary Bath vs Hall Bath in Clive: Where the Money Goes](https://busybuildersiowa.com/primary-bath-vs-hall-bath-clive/)

Oct 21, 2026

Same trades, same tile brand, $40,000 apart. Where the money goes in a Clive hall bath versus a primary bath, using ranges we have

[Read More](https://busybuildersiowa.com/primary-bath-vs-hall-bath-clive/)

### [The Three Things That Blow a Kitchen Budget in Des Moines Remodels](https://busybuildersiowa.com/three-things-that-blow-a-kitchen-budget-des-moines/)

Oct 19, 2026

Cabinets rarely break a kitchen budget. Tile, countertops, outlets and plumbing moves do. Where the money goes and how to hold a 10 to

[Read More](https://busybuildersiowa.com/three-things-that-blow-a-kitchen-budget-des-moines/)

### [How a Remodel Actually Gets Scheduled: The Order of Trades](https://busybuildersiowa.com/how-a-remodel-gets-scheduled-order-of-trades/)

Oct 16, 2026

Demo, structure, rough-ins, inspection, drywall, finishes. Why the order cannot change and where homeowners add weeks to their own remodel.

[Read More](https://busybuildersiowa.com/how-a-remodel-gets-scheduled-order-of-trades/)

```json
[{"@context":"https:\/\/schema.org","@graph":[{"@type":"Place","@id":"https:\/\/busybuildersiowa.com\/#place","geo":{"@type":"GeoCoordinates","latitude":"41.6060855","longitude":"-93.8051957"},"hasMap":"https:\/\/www.google.com\/maps\/search\/?api=1&query=41.6060855,-93.8051957","address":{"@type":"PostalAddress","streetAddress":"111 S 49th Street","addressRegion":"IA","postalCode":"50265","addressCountry":"US","addressLocality":"West Des Moines"}},{"@type":["GeneralContractor","Organization"],"@id":"https:\/\/busybuildersiowa.com\/#organization","name":"Busy Builders","url":"https:\/\/busybuildersiowa.com","sameAs":["https:\/\/www.facebook.com\/BusyBuilderz","https:\/\/www.bbb.org\/us\/ia\/west-des-moines\/profile\/remodel-contractors\/busy-builders-llc-0664-32137323","https:\/\/www.desmoinesregister.com\/press-release\/story\/30329\/busy-builders-expands-services-to-custom-home-building-in-central-iowa\/","https:\/\/nextdoor.com\/pages\/busy-builders-west-des-moines-ia\/","https:\/\/busybuildersllc.quora.com\/Busy-Builders-LLC-is-a-West-Des-Moines-IA-General-Contractor-company-focused-on-home-enhancement-through-remodeling-and","https:\/\/www.city-data.com\/business-entities\/IA\/BUSY-BUILDERS-LLC-644057-IA.html","https:\/\/www.homeadvisor.com\/rated.BusyBuildersLLCHome.125418287.html","https:\/\/share.google\/CwLFRDUlwAA3jdC6I","https:\/\/maps.app.goo.gl\/DigdFS58XfGad2h57","https:\/\/www.trustindex.io\/reviews\/busybuildersiowa.com","https:\/\/www.wikidata.org\/wiki\/Q139699968"],"email":"info@busybuildersiowa.com","address":{"@type":"PostalAddress","streetAddress":"111 S 49th Street","addressRegion":"IA","postalCode":"50265","addressCountry":"US","addressLocality":"West Des Moines"},"logo":{"@type":"ImageObject","@id":"https:\/\/busybuildersiowa.com\/#logo","url":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2024\/11\/cropped-cropped-Untitled-design-57.png","contentUrl":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2024\/11\/cropped-cropped-Untitled-design-57.png","caption":"Busy Builders","inLanguage":"en-US","width":"512","height":"147"},"priceRange":"$$$","openingHours":["Mo,Tu,We,Th,Fr,Sa,Su 08:00-18:00"],"description":"Busy Builders is a full-service home construction and remodeling contractor based in West Des Moines and serving homeowners across Central Iowa, including Des Moines, Ankeny, Waukee, Urbandale, and surrounding communities. Founded in 2020 after decades in the trades, the company specializes in custom home building, whole-home remodeling, kitchen and bathroom renovations, basement finishing and remodeling, home additions, and custom deck construction. Every project is managed from design through completion with a focus on transparent communication, honest pricing, detailed planning, and craftsmanship built to handle everyday life, helping families create functional, beautiful spaces that are made to last for generations. We are a registered and insured Iowa contractor; Iowa Contractor Registration #C140184.","legalName":"Busy Builders LLC","foundingDate":"2020-01-01","numberOfEmployees":{"@type":"QuantitativeValue","value":"90"},"location":{"@id":"https:\/\/busybuildersiowa.com\/#place"},"image":{"@id":"https:\/\/busybuildersiowa.com\/#logo"},"telephone":"844-435-9800"},{"@type":"WebSite","@id":"https:\/\/busybuildersiowa.com\/#website","url":"https:\/\/busybuildersiowa.com","name":"Busy Builders","alternateName":"Busybuildersiowa.com","publisher":{"@id":"https:\/\/busybuildersiowa.com\/#organization"},"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2026\/07\/home-addition-cost-diamondhead-lake-iowa-2026.png","url":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2026\/07\/home-addition-cost-diamondhead-lake-iowa-2026.png","width":"1250","height":"1250","caption":"Home addition with new foundation and framing tied to an existing Diamondhead Lake Iowa house","inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https:\/\/busybuildersiowa.com","name":"Home"}},{"@type":"ListItem","position":"2","item":{"@id":"https:\/\/busybuildersiowa.com\/category\/home-additions-blogs\/","name":"Home Additions"}},{"@type":"ListItem","position":"3","item":{"@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/","name":"Home Addition Cost in Diamondhead Lake, Iowa: 2026 Guide"}}]},{"@type":"WebPage","@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/#webpage","url":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/","name":"Home Addition Cost In Diamondhead Lake, Iowa: 2026 Guide","datePublished":"2026-09-01T10:00:00-05:00","dateModified":"2026-09-06T15:16:54-05:00","isPartOf":{"@id":"https:\/\/busybuildersiowa.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2026\/07\/home-addition-cost-diamondhead-lake-iowa-2026.png"},"inLanguage":"en-US","breadcrumb":{"@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/#breadcrumb"}},{"@type":"Person","@id":"https:\/\/busybuildersiowa.com\/author\/blake-daniels\/","name":"Blake Daniels","description":"Blake Daniels founded Busy Builders in 2020. Read his guides on home building, remodeling, basements, decks and additions across Central Iowa.","url":"https:\/\/busybuildersiowa.com\/author\/blake-daniels\/","image":{"@type":"ImageObject","@id":"https:\/\/busybuildersiowa.com\/wp-content\/litespeed\/avatar\/1b3807b32c8c2fafb64a2eddb79753af.jpg?ver=1769728917","url":"https:\/\/busybuildersiowa.com\/wp-content\/litespeed\/avatar\/1b3807b32c8c2fafb64a2eddb79753af.jpg?ver=1769728917","caption":"Blake Daniels","inLanguage":"en-US"},"sameAs":["https:\/\/busybuildersiowa.com\/","https:\/\/www.facebook.com\/BusyBuilderz\/","https:\/\/twitter.com\/builders_busy","https:\/\/www.tiktok.com\/@busybuilders","https:\/\/www.youtube.com\/@BusyBuildersLLC"],"worksFor":{"@id":"https:\/\/busybuildersiowa.com\/#organization"}},{"@type":"BlogPosting","headline":"Home Addition Cost In Diamondhead Lake, Iowa: 2026 Guide","keywords":"home addition","datePublished":"2026-09-01T10:00:00-05:00","dateModified":"2026-09-06T15:16:54-05:00","articleSection":"Home Additions","author":{"@id":"https:\/\/busybuildersiowa.com\/author\/blake-daniels\/","name":"Blake Daniels"},"publisher":{"@id":"https:\/\/busybuildersiowa.com\/#organization"},"description":"What a home addition costs in Diamondhead Lake in 2026. Cost by type, Iowa frost line requirements, small-area permitting, and septic considerations.","name":"Home Addition Cost In Diamondhead Lake, Iowa: 2026 Guide","@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/#richSnippet","isPartOf":{"@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/#webpage"},"image":{"@id":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2026\/07\/home-addition-cost-diamondhead-lake-iowa-2026.png"},"inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/busybuildersiowa.com\/home-addition-cost-diamondhead-lake-iowa-2026\/#webpage"}}]},{"@context":"https:\/\/schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"How much does a home addition cost in Diamondhead Lake?","acceptedAnswer":{"@type":"Answer","text":"Additions generally start around $300 per square foot, so a 400 square foot addition begins near $120,000 and rises with plumbing, structural work, and finish level. A simple bedroom addition sits at the lower end. A primary suite or two-story addition sits well above it."}},{"@type":"Question","name":"Do I need a permit for an addition in Diamondhead Lake?","acceptedAnswer":{"@type":"Answer","text":"Yes. Any addition changes structure and requires a building permit, plus separate trade permits for electrical and other work. Confirm requirements and who performs inspections for your specific address, since smaller Iowa areas often contract that function and jurisdiction can vary between city, county, and lake association."}},{"@type":"Question","name":"Does adding a bedroom affect my septic system?","acceptedAnswer":{"@type":"Answer","text":"It can. Septic systems are sized in part by bedroom count, so adding bedrooms may trigger a review of whether your existing system is adequate. Many lake-area homes are on septic rather than municipal sewer, so raise this at the start of planning."}},{"@type":"Question","name":"How deep do foundations need to be in Iowa?","acceptedAnswer":{"@type":"Answer","text":"Below the frost line, generally 42 inches. That requirement is not adjustable, and it means every permanent addition carries excavation and concrete cost regardless of what sits on top. Never accept a bid that omits foundation depth."}},{"@type":"Question","name":"How long does an addition take start to finish?","acceptedAnswer":{"@type":"Answer","text":"Roughly three to four months for a modest single-story addition and six to seven months for a two-story. Design and permitting alone often run five to twelve weeks before ground is broken, and contracted inspection scheduling can add time."}},{"@type":"Question","name":"What is the difference between a registered contractor and a licensed tradesperson in Iowa?","acceptedAnswer":{"@type":"Answer","text":"Iowa requires general contractors earning $2,000 or more annually to register with the Department of Inspections, Appeals, and Licensing. That is registration, confirming insurance and tax compliance. Electricians, plumbers, and HVAC technicians hold separate state licenses involving testing."}}]}]
```