BEST ADU Contractors in St Pete

Turn your backyard into a vacation rental.

Accessory dwelling units (ADU) can extend the usable space of your home, add an additional income source, and create stylish living spaces for your family.

Open hours

8am - 5pm


Cask Construction
1211 1st Ave N Suite 207
St. Petersburg, FL 33705

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Customer testimonials

Don't just take our word for it! 

The Cask team did a wonderful job on our ADU project. Couldn’t be happier with the experience.
Calin and his team are trustworthy, timely and professional. I have used them on more than one project and am looking forward to using them on our next. I cannot speak highly enough about their workmanship and communication throughout the projects.

Jason Kotsko

New Build

The guys at Cask Construction are awesome. They are responsive if you have questions and provided great value with their knowledge. I’m looking forward to my next project with them as we are moving forward with a permit application for an addition to our house.

Patrick Mullane

New Home Addition

#1 ADU Builder in St. Pete

A Licensed general contractor that stands by their work

Ready to start your next home project?

CASK Construction is a design-build team of general contractor that specializes in residential new builds, ADU's, and additions/garage conversions in the Saint Petersburg and Tampa Bay area. We take pride in our quality workmanship and customer service as a construction company, and we will work closely with you to ensure your project exceeds your expectations.

Contact us today for a free consultation, and let us help you make your design dreams a reality! We know that a new custom home or remodeling can be daunting, but with our years of experience we will guide you through the entire process so the end result is exactly what you wanted. Plus, our competitive pricing means you won't have to break the bank to get the home of your dreams.

Click below to chat with us, we'd love to learn more!

we build solutions

You're not just building a home, you're creating a legacy. Let us be a part of it.

Florida ADU Builder

Add an ADU to Your House Without Breaking the Bank

Looking for a creative and affordable way to add more living space to your home? CASK Construction can help! We are general contractors who specialize in Accessory Dwelling Unit (ADU) and Auxiliary Living Unit (ALU) construction, which are perfect for homeowners who want to expand their living space without breaking the bank.

Our team of experienced professionals right here in Saint Petersburg Fl will work closely with you to design and build the perfect ADU or ALU for your needs, whether it's an in-law suite, home office, rental unit, or anything else. We pride ourselves on our ability to create beautiful and functional living spaces that our clients will love.

If you're interested in adding an ADU or ALU to your home, please contact us today! We'd be happy to provide you with a free consultation and estimate. There's a reason homeowners in Saint Petersburg are choosing CASK for their accessory dwelling units for over a decade.

Interior view of ADU unit - St.Pete

Our Building Process


With our clients we create a custom project schedule to ensure that the building and design professionals understand what they can expect from us.

We start by defined starting cost inputs, then proceed with revisions through conversations between owners/project leads until an final budget is reached which adheres closely enough for their liking so as not leave them wanting in anyway possible when it comes time put pen-to paper on contract documents later down road.


And anyone else already involved in the project, such as an architect.


This may include: Architect, Subcontractor, Structural engineer, Interior designer, Landscape architect.


Constructibility, Material choices, Preferred vendors, Design details whether it's residential and commercial projects.


Our goal here is to define as many building materials and details as possible.


We use starting cost inputs. Then we revise the budget through conversations with owners and project leads, toarrive at a final budget we can adhere to.


This way the owners and the building and design professionals understand what to expect and can commit accordingly.


Draft a set of construction plans, meet cost goals, detail expectations for various inputs and labor.

ADU Builders

ADU Design Builds

Cask construction can help you get started with these other options for design build ADU construction:

Mother-in-law suite

Your construction project creates a living space built on your property that is usually one story and is either a studio, a one-bedroom apartment, or both.

Garage Apartment

Our garage apartment plans are available with shops, two-car bays, 1-2 bedrooms, and more. Garage apartment plans are an excellent way to expand a home and to create additional living space.

She Shed/Man Cave

Build your own man cave or she shed so that you can relax and entertain without disturbing your main home.

Home Additions

Homeowners may choose to build an addition that can serve as a separate living unit or family room for their family or as a rental property. This may be a one-story or two-story structure built out of one side of the home.

We worked with Cask construction to build our ADU and from start to finish the team at Cask guided us through the process going above and beyond to get our job done. They had foresight in the designing and construction and found solutions to any small issues that arose. We are thrilled with our new building. Our job was completed in a very timely manner with great attention paid to keeping our job within our budget. Highly recommend this company.

Julie A.


Accessory Dwelling Units Contractors in St. Pete and Tampa

Add an extra living space to your property for a fraction of the price

It's no secret that the current housing market is tough, and finding affordable living spaces can be a challenge.

Not only are prices high, but availability is low. Increasingly, people are having to settle for cramped quarters or long commutes.

CASK Construction can help you add an accessory dwelling unit (ADU) to your property. Theres a reason why we've been trusted as the top ADU Builders in St. Pete and Tampa Bay area. ADU's are a great way to create extra living space without sacrificing yard space or privacy. Our experienced team of general contractors will work with you from start to finish, ensuring that your vision becomes a reality. We've helped other St. Pete homeowners for years and would love to help you with your project as well!  

an ADU build exterior

Zoning Categories
in St. Pete

Did you know every neighborhood in the city of St Petersburg allows for ADU (accessory dwelling units) as long as you property meets the zoning requirements.

NT (Neighborhood Traditional)

NT 1,2,3 for the most part you are allowed to build an ADU with very minimum restrictions.

NS (Neighborhood Suburban)

NS1,2 allow for ADU’s for the following situations

ALLOW in the NS-1 and NS-2 zoning categories, subject to:
When located on an alley

When located at corner of two intersecting streets and meets minimum lot area for zoning category

If no alley or corner, then minimum lot size shall be 10,000 square feet; however, 12,000 square feet is also being considered.

NTM-1 (Neighborhood Traditional Mixed Residential)

This new zoning changes now allows for 4 units per dwelling on all future major roads. If your property qualifies.

NTM-1 Interactive Map (click here to see the map if your property qualifies for these new changes)

City Code Section 16.50.010

New changes to the Code for ADU’s

Miscellaneous General Amendments for all ADUs:

  • INCREASE maximum unit size from 750 to 800 square feet.

  • DELETE requirement for paved parking space (gravel allowed).

  • DELETE requirement for unenclosed parking space.

  • DELETE the 50% floor area restriction for 2-story buildings.

  • ALLOW ADUs for single-family houses in multi-family districts.

WAIVE parking requirement for units that are:

  • Located within 1/8 mile of High Frequency Transit Route;

  • DELETE requirement for paved parking space (gravel allowed).

  • Located on an alley;

  • 600 square feet or less in size;

  • Required spaces provided from alley, no front driveway


Thinking of building an ADU? Here are some answers to common questions about the construction process - from permits, to design options and more. Get all your info right here!

What is the average cost of an ADU in Florida?

Thinking of adding an ADU to your property, but worried about the cost?

Estimated Ranges:
1 story is typically between: $150k-190k.
2 story, 1 car between: $190k-$250k
2 story, 2 car between: $250k-$295k

Can I build an ADU on my property in Florida?

Not sure how much space you need for an Accessory Dwelling Unit (ADU)? It all depends on your neighborhood - just give us a call and we'll help find out in minutes.
The regulations vary depending on zoning categories 1-3 so don't worry if that's not crystal clear; our team is happy to assist in finding what works best for you!

Ready to get started?

Shoot us an email or call us any time with questions - let's make this happen! Click here to contact us.

How long does it take to build?

Building an ADU can take as little as 5 months from break ground to move-in day. So you could have a whole new living space in less than half of the year!

Do you offer ADU Design-Build?

We offer design-build services, so you get the whole package - all covered from drawings to completion! With our turnkey solutions for ADUs, everything is taken care of.

Do you offer financing?

If you're looking for payment options, we've got your back! We work with awesome lenders to make financing a breeze.

Options Available:
- Cash
- Personal Loan
- Home Equity Line of Credit
- Home Improvement Loan
- Homestyle Renovation Loan
- Construction Loan

How to get started?

Ready to get your ADU (Accessory Dwelling Unit) project rolling in St. Pete? Give us a shout and our team will guide you every step of the way! We’ve got a streamlined Pre-Con Process with all the information needed, plus we handle permit management so you can focus on making things happen!

Still have questions?

Give us a call today! 

Our Recent Projects

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Understanding Accessory Dwelling Unit Design-Build Construction

Are you considering an Accessory Dwelling Unit (ADU) design-build construction project? Maybe you’ve heard the term but don’t know what it is or how it works. Here, we’ll break down why ADU design-build construction is important and how CASK Construction can help with your project and turn that existing space into something special.

What is ADU Design-Build Construction?

An ADU is a secondary living space that can be built on a single family property. This includes standalone structures like a backyard cottage or garage apartment, as well as converted space within an existing home such as a basement or attic. Because of its versatility, ADUs have become increasingly popular in recent years and are seen as a great way to add value to your property while also creating additional living space.

The process of designing and building an ADU requires expertise in both architecture and construction, which is why many people prefer to hire a contractor who specializes in ADU design-build construction. At CASK Construction, we specialize in helping homeowners with their accessory dwelling unit projects by providing comprehensive services that include everything from the permitting process to the design process and the construction process itself.

CASK Construction Services for Your ADU Project

At CASK Construction, our goal is to make sure your project runs smoothly from start to finish. Our team takes care of every aspect of your project through the whole process so you don’t have to worry about any of the details. We begin by helping you navigate the permitting process, which can be complicated depending on where you live and what type of structure you’re looking to build. We then move on to the design phase, where we work with you to create custom plans for your project based on your needs and budget constraints. Work with experienced ADU designers here in St. Pete and Tampa area. Finally, we handle all aspects of the actual construction process including hiring subcontractors and managing timelines until completion wether it's a custom ADU or not.

Go with ADU Design-Build Experts

Building an Accessory Dwelling Unit (ADU) requires knowledge in both architecture and construction—which is why many people choose to hire a contractor who specializes in ADU design-build construction projects. At CASK Construction, we provide comprehensive services that cover every step involved in designing and constructing an ADU—from navigating the permitting process all the way through to completion—so that homeowners can rest assured knowing their projects are being taken care of efficiently and professionally from start to finish. We have years of experience as a trusted ADU designer and building accessory dwelling units around St. Pete and Tampa area. If you’re interested in learning more about how we can help with your ADU construction project, contact us today! Let's build an ADU together!