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Find Basement remodelers in Riverhead

Avatar for Hampton Design and Build
Hampton Design and Build
4.81(
26
)

Angi Approved

In business since 2002

Free estimates

Customers say: Quick response

"We have done projects with different contractors, but putting an addition on to our house was by far the biggest project we had ever done. We were terrified of its breadth and complexityâ particularly as concerned making the house comfortable for my elderly parents and more accessible for my son, who uses a wheelchair. We met with several contractors and chose HDB both because their bid was more reasonable and because we had a gut feeling of trust that, fortunately for us, never ebbed throughout the process. Choosing HDB was the best decision we have ever made in the 10 years we have owned our house, and we will continue to solicit their expertise for any future work. At every step of the process they demonstrated their authenticity, integrity, empathy and expertise. For questions we had about anything, big or small, we received a response within a day. We added two and half rooms and bathrooms to ones side of the house. Based on his vast experience in our area, Dale had important, smart suggestions for modest but powerful improvements elsewhere in the house that would not have occurred to me but proved to be invaluable--and increased the value of our home dramatically. He navigated town permit issues. Cost was very reasonable and if there were any questions, he was open to discussing and adjusting. Diane had superb design instincts, which saved us from hiring another professional, and as part of the fee she sent wise suggestions for vanities, light fixtures, paint colors, rugs and more; and then ordered the items directly. Both obviously cared about us and the project and made everything as easy as possible for us. Most projects we had done previously had faltered at the end, with smaller punch list items; but as usual, Diane and Dale were responsive til the final t was crossed and I dotted. HDB is a rare company with skill and expertise but also with a passion for their work and a spirit of kindness and concern for their clients that made a house addition â something we dreaded--actually fun. Thanks HDB!"
3 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Exterior Team Home Services, Inc.
Exterior Team Home Services, Inc.
4.95(
22
)

Angi Approved

In business since 2016

Free estimates

Warranties offered

"Ronald and his Team did an excellent job for a very good price. Very professional. Pointed out some things that needed attention and then took care of it. The workmanship and customer service is better than any other craftman I have ever hired. I will keep Exterior Team Home Service number available to recommend to anyone that asks if "I know someone who...." I trust Exterior Team Home and will use them in the future."
1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Premier Home Remodeling & Design
Premier Home Remodeling & Design
4.55(
21
)

Angi Approved

In business since 2019

Free estimates

Customers say: Quick response

"Premier home remodeling did a amazing job on a big renovation we had done on our home. We had our unfinished basement, kitchen and 2 bathrooms remodeled. Charles and the crew were professional, clean, and super friendly. They had great suggestions, and designed our kitchen a way me and my husband never thought could be done. Our bathrooms are beautiful, and our basement is a great new living space to our home. We will definitely use them again and will be recommending them to all of our family and friends. Thank you premier!"
9 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for East End Designs, LLC
East End Designs, LLC
4.94(
51
)

Angi Approved

In business since 2010

Free estimates

Customers say: Quality work

"Honest, trustworthy, professional, great communication.. and the work itself was excellent, attention to detail. Shawn and the crew let nothing stop them from doing the absolute best job they could do. I would highly recommend them "
8 neighbors recently requested a quote
Recommended by68%of homeowners
Island Homes And Remodeling
New to Angi

Angi Approved

In business since 2022

From the foundation to the final fixture, Island Homes and Remodeling builds excellence. We are your local experts for new home builds, extensions, and transformative remodeling. Whether you're looking to finish your basement or create the ultimate backyard retreat, we bring professional expertise and high-end quality to every job site. Your dream home starts here.

1 neighbors recently requested a quote
Avatar for Craft Construction NY
Craft Construction NY
5.00(
5
)

Angi Approved

In business since 2024

Free estimates

"Craft Construction NY completely transformed my bathroom, and I couldn’t be happier with the results. They gutted the entire space and rebuilt it with beautiful subway tile, a new vanity, mirror, and toilet — everything looks modern, clean, and thoughtfully done. The craftsmanship is outstanding, and they went above and beyond my expectations at every step. The crew was incredibly friendly, respectful, and professional. They showed up on time each day, kept the workspace clean, and made the whole process surprisingly stress‑free. It’s rare to find a team this reliable and detail‑oriented. I highly recommend Craft Construction NY to anyone looking for quality work and a great experience. They truly delivered exceptional results."
19 neighbors recently requested a quote
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FAQs for basement remodeling projects in Riverhead, NY

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Riverhead, NY homeowners’ guide to basement remodelings

From average costs to expert advice, get all the answers you need to get your job done.