Middlesex County · Licensed · Insured · Family-Owned
Retaining Walls in Porter Square, Cambridge, MA
Looking for retaining walls in Porter Square in Cambridge, MA? Ultimate Boston Masonry is a licensed, insured, family-owned masonry contractor serving Cambridge and the rest of Middlesex County from our Boston base. Cambridge is dense with 19th-century brick that was built with lime mortar. We match historic joints instead of forcing hard modern mixes onto old walls.
Housing in Porter Square in Cambridge includes older brick multi-families and colonials built before 1940, and wind-driven rain from nor'easters is what wears this masonry down. That is why our retaining walls work starts with understanding what your building is made of — brick type, stone, mortar hardness, and drainage — before we price anything. A retaining wall fails from water, not weight. We build with proper base depth, geogrid reinforcement where needed, and drainage behind the wall so it stays plumb through New England winters.
Response time in Cambridge: Estimates within 24 hours · Typical range $55 – $145 per face foot

Free retaining walls quote in Cambridge
Tell us about the project and we'll come out to price it — no charge, no pressure.
Scope
What our retaining walls in Cambridge includes
- Excavation and compacted crushed-stone base
- Natural stone, granite, or segmental block options
- Perforated drain line and clean-stone backfill
- Geogrid reinforcement on taller walls
- Caps, steps, and integrated seating
- Grading and cleanup at completion
Process
How retaining walls works in Porter Square, Cambridge
1. Site and drainage review
We check grade, soil, and where water travels before choosing a wall type.
2. Design and material selection
You see stone samples and a layout with heights, curves, and cap details.
3. Base and build
Excavation, compacted base, then course-by-course build with drainage installed as we go.
4. Finish and backfill
Caps set, backfill graded, site restored, and wall drainage daylighted properly.
Local FAQ
Retaining Walls in Porter Square, Cambridge: questions answered
How much does retaining walls cost in Porter Square, Cambridge, MA?
Most retaining walls projects in Cambridge fall between $55 – $145 per face foot. Block walls are the value option. Dry-laid and mortared natural stone, tall walls, and difficult access sit higher. We give a free written, fixed-price estimate after an on-site look.
How quickly can you start retaining walls in Porter Square, Cambridge?
Estimates within 24 hours in Cambridge. Most projects are scheduled within one to three weeks, and safety hazards are prioritized.
Do I need a permit for retaining walls in Cambridge?
Minor repairs usually don't need a permit, but rebuilds, new structures, and tall retaining walls often do under the Massachusetts building code. We check with the Cambridge building department and pull permits when required.
Which areas near Porter Square, Cambridge do you also serve?
Besides Harvard Square, Porter Square, Cambridgeport, we regularly work in nearby Boston, Somerville, Brookline, and every community within 45 miles of Boston.
Are you licensed and insured to work in Cambridge?
Yes. Ultimate Boston Masonry is licensed, fully insured, and family-owned with 5 years of experience on Greater Boston brick and stone.
Do I need a permit for a retaining wall?
Most Massachusetts towns require a permit above four feet, and many require engineered drawings. We tell you the local rule and handle the filing.
Why is my existing wall leaning?
Almost always a missing drain line or an undersized base. Hydrostatic pressure behind the wall pushes it out over a few freeze cycles.
Retaining Walls near Porter Square, Cambridge
Also available in these Cambridge neighborhoods and nearby towns.
Other masonry services in Porter Square, Cambridge
- Chimney Repair & Rebuilds in Porter Square
- Brick & Stone Repointing in Porter Square
- Patios & Walkways in Porter Square
- Stone Steps & Stoops in Porter Square
- Foundation & Basement Masonry in Porter Square
- Stone Veneer & Facades in Porter Square
- Outdoor Fireplaces & Fire Pits in Porter Square
- Brick Repair & Replacement in Porter Square
- Historic Masonry Restoration in Porter Square
- Stucco & Foundation Parging in Porter Square
- Masonry Waterproofing & Sealing in Porter Square
- Brick Walls, Pillars & Columns in Porter Square
- Indoor Fireplace & Firebox Repair in Porter Square
- Paver & Cobblestone Driveways in Porter Square
- Emergency Masonry Repair in Porter Square
Learn more about our retaining walls service or see all masonry services in Cambridge.
Homeowner guides
Read before booking retaining walls
8 min read
Choosing the Best Patio Material for New England Winters
Bluestone, granite, brick, or concrete pavers? How each handles freeze-thaw, salt and shoveling around Boston, with costs.
Read the guide →7 min read
Why Retaining Walls Fail: A Drainage Guide
Water, not soil weight, is what topples retaining walls. Here is how proper base, drain line and backfill detailing prevents it.
Read the guide →8 min read
Spotting Water Damage in an Older Foundation
How to read cracks, dampness and efflorescence in fieldstone and brick foundations, and which problems need a mason now.
Read the guide →