
Get matched with top addition to existing structure builders in Oyster Bay, NY
Enter your zip and get matched with up to 3 pros
Matching on HomeAdvisor
Find Addition to existing structure builders in Oyster Bay

Angi Approved
In business since 2021
Free estimates
Customers say: Quick response
"JLR Design And Building Consultants, LLC was the best. thanks so much,"
Angi Approved
In business since 1992
Free estimates
Customers say: Quick response
"Friendly, low price, and best of all the painter, Francisco, is a REAL professional who’s not about doing a slipshod job and leaving. He took as many days as he needed at a flat rate and ensured the job was top quality."
Angi Approved
In business since 2016
Free estimates
Emergency services offered
MC Squared Renovations is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

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."


Angi Approved
In business since 2011
Free estimates
Customers say: Quick response
"The work was done very nite and profesional and the contractor was on time with the entire project and the final project turned out beutiful. And i willing to recomenden and hire him again"

Angi Approved
In business since 1988
Free estimates
Customers say: Terrific value
"We had a great experience with Old World Construction for building our deck. They showed up when they were supposed to. The sent a proposal as soon as possible and started the work right away. They had the entire project finished before we knew it. The quality was perfect and the customer service was great. I would recommend them to anybody."
Angi Approved
In business since 1988
Customers say: Terrific value
"I was so pleased to be connected to Eddie and the Impresa Construction crew through Home Advisor. They were awesome! We had a complete room renovation (floor, ceiling, walls gutted) as well as updating the ceiling, all molding and painting in a dining room. Eddie and his crew were very knowledgeable and helpful throughout the whole process and did a beautiful job on everything they touched- flooring, drywall, ceilings, plaster, painting. Eddie is extremely tidy as well and made sure to clean up quickly and in a thorough manner. Couldn't be happier! I will definitely hire him again !!!"

Angi Approved
In business since 2021
Free estimates
Customers say: Quick response
"Premier Builders was trustworthy and a pleasure to work with. A+ job. Would recommend to anyone remodeling their home."
The Oyster Bay, NY homeowners’ guide to addition to existing structure building services
From average costs to expert advice, get all the answers you need to get your job done.

Planning a home addition? Discover what to expect during the process, including design choices, permits, construction timelines, and key factors that impact your project’s success.

Looking to vault a ceiling? Here’s how much it costs, what factors affect cost, and what to expect.

Discover how much porcelain countertops cost to install based on factors such as their size, materials, add-ons, and local labor rates.

Budget for bedroom remodel costs based on factors such as bedroom size, remodel type, features, materials, labor, and more.

Use this guide to budget for kitchen island costs, including island style and shape, customizations, countertop options, professional labor, and more.

Budget for sunroom addition costs based on factors such as room type, site prep, professional labor, features, permits, prefab vs. custom designs, and more.
- Birmingham
- Phoenix
- Tucson
- Fresno
- Long Beach
- Los Angeles
- Modesto
- Sacramento
- San Diego
- San Francisco
- San Jose
- Denver
- Hartford
- Washington DC
- Fort Lauderdale
- Jacksonville
- Miami
- Orlando
- Tampa
- Atlanta
- Chicago
- Indianapolis
- Louisville
- New Orleans
- Baltimore
- Boston
- Detroit
- Grand Rapids
- Minneapolis
- Saint Paul
- Kansas City
- Saint Louis
- Las Vegas
- Albany
- New York
- Asheville
- Charlotte
- Greensboro
- Raleigh
- Winston Salem
- Cincinnati
- Cleveland
- Columbus
- Oklahoma City
- Portland
- Harrisburg
- Philadelphia
- Pittsburgh
- Providence
- Memphis
- Nashville
- Austin
- Dallas
- El Paso
- Fort Worth
- Houston
- San Antonio
- Salt Lake City
- Norfolk
- Richmond
- Virginia Beach
- Seattle
- Madison
- Milwaukee