
Portsmouth, New Hampshire
Second Story Additions in Portsmouth, NH
We build second story additions for homeowners in Portsmouth: a whole new floor or a partial level, such as a suite above the garage. A single team handles the structural evaluation, the shoring, the removal of the old roof, the framing, the stairs, and every inspection.
- Serving Portsmouth, NH
- Warranty Available
- Free In-Home Estimate
- Insured (General Liability)
Second Story Additions in Portsmouth
Second Story Additions for Portsmouth Homes
Brick Federal-style stores and townhouses fill the downtown historic district, with Prescott Park stretching along the waterfront. When a Portsmouth family wants more space on the same footprint, we add a full or partial floor, with the roof taken off in planned sections and open areas covered whenever work stops.
Common second story projects in Portsmouth:
- Second stories for older homes near Strawbery Banke
- Roof removal in planned sections
- Temporary shoring while the house is open
- Full or partial floors above the existing house
- New stairs tied into the rooms below

Local conditions
Key Facts for a Second Story in Portsmouth
Preserved older homes can hide old framing, outdated wiring, and layers of past repairs that only show once work starts. Whatever the lot, a second story stays on the existing footprint, so most of the work happens up top, with temporary shoring in place and dust barriers for the rooms below.
The starting point for a new floor:
- The foundation under the house
- Walls that must carry the new floor
- The floor framing and load paths
- The roof to be removed
- Panel, water heater, and HVAC capacity
Clear signs a second story may fit you:
- The lot has little space to build out
- You need several bedrooms and a bath
- You would rather keep the yard as it is
- Your family is growing faster than the house
- You want to stay in your neighborhood
We look at the house on the first visit and involve an engineer before design, so the new floor is planned around what the foundation and walls can hold, not around a guess.
Our process
Our Second Story Process in Portsmouth
A second story in Portsmouth follows a fixed order: structural evaluation, temporary support, roof removal, reinforcement, framing, the systems, and finishes. Each step is planned before the roof comes off, since the house stays open to the weather until the new floor is closed.
- 01
Free In-Home Visit
We study the structure and the roof and talk through the space you want before the structural evaluation.
- 02
Working With an Engineer
Reinforcement and load paths planned with a structural engineer, plus stamped drawings for the permit.
- 03
Permit Handling
We file the applications and schedule the structural, framing, systems, insulation, and final inspections.
- 04
Weather Protection
Open areas covered at the end of each day while the roof is off.
- 05
Living Areas Protected
Barriers between the work and the rooms you live in, and a clean site at the end of the day.
- 06
Planned Utility Shutoffs
Short utility interruptions scheduled and announced ahead of time, so you can plan around each one.
Local details
Second Story Details for Portsmouth
Building up in Portsmouth begins with a few local facts: the ZIP codes we cover, the county, and the distance to our North Andover office. The table below puts them together along with the service area and what is often planned alongside a second story, so you can see the basics before the first visit.
| Detail | Portsmouth, NH |
|---|---|
| County | Rockingham County, New Hampshire |
| ZIP codes | 03801, 03802, 03803, and 03804 |
| Our office | 308 Sutton St, North Andover, MA |
| Service area | Rockingham County and southern New Hampshire |
| Estimate | No-cost in-home visit; price after the structural evaluation |
| Often combined with | New systems for the whole house |
Cost factors
Second Story Cost Factors in Portsmouth
The engineer’s review has a big effect on the cost of a second story for a Portsmouth house. A foundation and walls that need beams, posts, or larger footings bring extra work a sound structure avoids, so we rely on that review ahead of the price. Bathrooms upstairs, stairs, roof design, and finishes also count.
The price depends on:
- A full or partial new floor
- The structural evaluation and reinforcement
- Shoring and roof work
Also in the estimate:
- Plumbing, wiring, and HVAC upstairs
- Panel, water heater, or HVAC upgrades
- Materials, finishes, and permits
Nearby
Second Story Additions Near Portsmouth
Not in Portsmouth? We also add second stories in Kingston, Exeter, Amesbury, and Plaistow, as well as throughout Rockingham County and southern New Hampshire. Our approach stays the same from town to town: an engineer checks the structure first, the roof is opened in planned stages, and open areas are covered at the close of each day.
Second Story Additions in Kingston Second Story Additions in Exeter Second Story Additions in Amesbury Second Story Additions in Plaistow Second Story Additions All Construction Services
Free estimate
Get a Free Second Story Estimate in Portsmouth
Weighing a second story for a Portsmouth house? Our team visits the house, checks the roof and the structure, goes over the rooms you want upstairs, and follows up with a detailed scope including materials and next steps, with no obligation to move forward.
Want a second floor in Portsmouth? Call (978) 917-9072 or request a free in-home estimate here, and our team will look at the structure and the roof.
- Registered MA Home Improvement Contractor
- Insured (General Liability)
- Google Guaranteed
- Warranty Available
- 5+ Years of Experience
- Free In-Home Estimate
FAQ
Second Story Additions in Portsmouth: Common Questions
Homeowners in Portsmouth considering a second story wonder about the same four things: permits, reinforcement, roof removal, and how to start. Below, each one gets a direct answer in plain words. If you need more detail, call us and we will help.
What permits does a second story in Portsmouth need?
A permit with stamped structural drawings, and in many towns a zoning review of building height. Inspections cover the structural work, the framing, the electrical, plumbing, and HVAC, the insulation, and the final work. We bring in the engineer, prepare the applications in Portsmouth, and book each inspection.
How do you know a Portsmouth house can hold another floor?
An engineer’s evaluation answers that. Before design, the engineer reviews the foundation, the walls, the floor framing, and the load paths down to the ground. The results tell us what reinforcement is needed, such as beams, posts, larger footings, or new framing, and we price the project after that evaluation.
Will the existing roof be removed?
In most cases, yes. A full second story normally means removing the existing roof so the new floor can be framed on the walls, while a partial addition may only open one section. We remove it in planned sections, and we protect open areas at the end of each day.
How do I get a second story estimate in Portsmouth?
Phone (978) 917-9072 or book a no-cost in-home estimate online. We come to the house in Portsmouth, check the foundation, walls, and roof, and talk through what the new level should hold. Next comes the structural evaluation, and the written estimate is sent after it, so the price matches the actual structure. There is no obligation.
