Licensed Louisiana Contractor · License #886155

Home Additions in Mandeville & the Northshore

Add space, improve function, and stay in the home you already love. We handle the foundation, framing, roofline tie-in, and every trade in between — managed start to finish by a licensed, third-generation general contractor, so the addition looks like it was always part of the house.

Prefer to talk first? Call 985-869-5828

#886155

Licensed & Insured in Louisiana

3rd Generation

General Contractor

Permits & Plans

Handled for You

What Kind of Addition?

Three Ways to Add Space

Every addition starts with what your family needs the house to do. Most fall into one of these:

01 · Most Common

Small Addition

Best for adding one room or converting space you already have.

✓  Bedroom or bathroom addition

✓  Garage conversion

✓  Sunroom or enclosed patio

02

Major Addition

Best when the house needs to grow in a big way.

✓  Living and family room additions

✓  Kitchen expansions

✓  Structural work and new rooflines

03

Second-Story or Detached

Best when the lot won’t allow building out.

✓  Second-story additions

✓  Workshops and studios

✓  Guest suites

Real Projects · Real Costs · Real Timelines

Recent Additions in Mandeville

Original one-bedroom home before the addition near Old Mandeville, LA

Before

Completed 1,030 sq ft addition tied into the original home near Old Mandeville, LA

After

Near Old Mandeville · 1,030 Sq Ft Addition

A One-Bedroom Cottage Became a Full Family Home

The original 805 sq ft home didn’t fit a growing household. We added two bedrooms, a primary suite with a soaking tub and walk-in shower, a laundry and mudroom, and extended the living room — matching the foundation, framing, and roofline so it reads as one house.

5 Months

Timeline

$150K–$200K

Investment

1,030 sq ft

Added

Read the Full Case Study →
Worn deck before the sunroom addition in Mandeville, LA

Before

Finished sunroom with gas fireplace and brick accent wall in Mandeville, LA

After

Mandeville · Sunroom Addition

A Worn Deck Became a Four-Season Sunroom

These homeowners wanted a comfortable place to watch their backyard bird feeders year-round. We replaced the deck with a fully conditioned sunroom — new slab, roof tied into the existing roofline, hurricane-impact glass, a gas fireplace, and A/C from the existing system.

6 Weeks

Timeline

$70,000

Investment

~400 sq ft

Added

Read the Full Case Study →

What We Build

Home Addition Services

✓  Bedroom additions

✓  Bathroom additions

✓  Kitchen expansions

✓  Living and family room additions

✓  Rear and side additions

✓  Sunrooms and enclosed patios

✓  Garage conversions

✓  Detached structures and workshops

✓  Second-story additions

Updating the existing house too? See our whole-home renovations.

Why It Takes a General Contractor

The Hard Part Is Where New Meets Old

01

Foundation & Tie-In

New slab, new framing, and a clean tie-in to the existing structure — the part that has to be estimated and built precisely.

02

Rooflines That Match

Roof, siding, and trim matched to the original house, so the addition looks like it was always there.

03

Systems That Keep Up

A/C, electrical, and plumbing extended or upgraded so the new space is as comfortable as the rest of the home.

Outgrowing your house?

Tell us what your family needs. We’ll walk the property with you and give you an honest read on what an addition would take.

How It Works

Our Home Addition Process

STEP 01

Consultation & Space Planning

We walk the property and talk through what the new space needs to do.

STEP 02

Plans & Permitting

Design in-house, with a local architect and engineer when the project needs one. We handle the permits.

STEP 03

Selections & Estimate

Materials matched to your home and a detailed, thorough estimate before anything is scheduled.

STEP 04

Construction

Foundation, framing, tie-in, and every trade, managed by us with updates throughout.

STEP 05

Final Walkthrough

We review every detail of the new space with you before we call it done.

Common Questions

Home Addition FAQs

How much does a home addition cost?

It depends on size and complexity. Two recent examples: a ~400 sq ft four-season sunroom ran about $70,000, and a 1,030 sq ft addition with two bedrooms, a primary suite, and a laundry/mudroom ran $150,000–$200,000. You’ll get a detailed, thorough estimate after we walk your property.

How long does a home addition take?

Our recent sunroom addition took 6 weeks; the 1,030 sq ft addition near Old Mandeville took 5 months. You’ll get a realistic timeline for your project at the consultation.

Do you handle plans and permits?

Yes. We handle design in-house, bring in a local architect and engineer when a project needs one, and manage permitting and inspections in St. Tammany Parish.

Will the addition match my house?

That’s the goal on every addition. We match the roofline, siding, and trim, and tie the new structure into the existing house so it looks like it was always there.

Can you turn my deck or patio into a sunroom?

Yes. We recently replaced a worn rear deck in Mandeville with a fully conditioned sunroom — new slab, impact glass, a gas fireplace, and A/C tied into the existing system.

Total Construction & Renovation LLC logo

Ready For A Renovation? We’re Ready To Help!

No pressure, no obligation — just an honest conversation about your home and what it would take to get it where you want it.

What Happens Next

STEP 01

Reach Out

Call 985-869-5828 or send us a request through our contact page.

STEP 02

Hear Back Within 48 Hours

We respond to every message within 48 hours. Calling is the fastest way to reach us.

STEP 03

Walkthrough & Estimate

We walk your home with you, then follow up with a detailed, thorough estimate. No obligation.

or call 985-869-5828 · Licensed & Insured · LA #886155