Concrete foundations in Greenwich, CT
New foundations, footings and foundation repair in Cos Cob, Riverside, Old Greenwich and Byram and the rest of Greenwich. Free estimate on new foundations, footings and foundation crack repair, priced from your plans or a site visit.
- Free on-site estimate anywhere in Greenwich
- Footings 42 inches below grade
- Poured walls, dampproofing and footing drains
Foundation work in Greenwich
25% of Greenwich's homes were built before 1940, many on fieldstone, brick or early concrete foundations. Additions to those houses need new footings dug carefully beside the old walls so we don't undermine them.
Parts of Greenwich near Long Island Sound are in FEMA flood zones, where additions and rebuilds can require elevated foundations with flood vents. The town's floodplain manager decides, and we build to the approved plans. Ledge is common under Greenwich lots. Footings can bear directly on sound rock, and when a basement needs the rock gone, removal is priced as its own line.
The median home in Greenwich was built in 1963, close to the 1960s house that's typical statewide. That's newer than next-door Darien (median 1957) and older than Stamford (1972).
Greenwich at a glance
| Median year homes were built | 1963 |
|---|---|
| Homes built before 1960 | 47% |
| Single-family detached homes | 63% |
| Owner-occupied homes | 69% |
| Population, 2024 estimate | 64,594 |
Foundation permits in Greenwich. New foundations, additions and garages need a building permit from Greenwich's building department, with footing inspections before the pour in most towns. Footings go 42 inches below grade statewide. Crack injection inside an existing basement usually doesn't need a permit; structural repairs and wall replacements do.
What we do in Greenwich
- Additions and garages
- Footings, poured walls, dampproofing and drains.
- Deck, porch and sunroom footings
- Piers to 42 inches, inspected.
- New home foundations
- Full basements and crawlspaces from your plans.
- Foundation crack injection
- Polyurethane for leaks, epoxy for structural bonding.
- Waterproofing and drainage
- Exterior excavation, sealing and footing drains.
- A
- Footing 42 in. below grade on undisturbed soil
- B
- Poured wall, reinforced per the plans
- C
- Dampproofing on the outside
- D
- Perforated footing drain in stone
- E
- 4 in. slab over a vapor barrier and gravel
- F
- Anchor bolts for the sill plate
Planning prices
| Work | Planning range | What drives it |
|---|---|---|
| Footing for a deck, porch or sunroom post (42 in. deep) | $300–$750 each | Cheaper per footing on bigger layouts |
| Two-car garage foundation: frost walls and slab | $16,000–$32,000 | Size, wall height and excavation decide it |
| Addition foundation, full basement (about 300 sq ft) | $25,000–$55,000 | Footings, 8 ft walls, dampproofing and drains |
Planning ranges for Connecticut in 2026, not quotes. Ledge, tight access, long pump or wheelbarrow runs and very small pours push a job up. Your price comes in writing after we've seen the site. See every line item.
Concrete foundations in Greenwich: questions
Do I need a permit for a foundation in Greenwich?
Yes. New foundations, additions and garages need a building permit from Greenwich's building department, and most towns inspect footings before the pour. Deck and porch footings are usually part of the deck permit.
How deep are footings in Greenwich?
42 inches below grade, the same as everywhere in Connecticut. The state building code sets the frost depth statewide, and towns can't change it.
Do flood zone rules affect a foundation near the shore?
They can. In a FEMA flood zone, additions and substantial rebuilds may need elevated foundations with flood vents. Greenwich's floodplain manager makes the call; we build to the approved plans.
Do you pour foundations near Greenwich?
Yes. We also pour foundations in Stamford, Darien and New Canaan, and across Fairfield County.
More concrete work in Greenwich
Everything else we build in town. Descriptions of each are on the Greenwich concrete contractors page.
Concrete foundations near Greenwich
Same service, neighboring towns. All 67 towns.
- Stamford5 mi
- Darien8 mi
- New Canaan11 mi
- Norwalk12 mi
- Wilton15 mi
- Westport16 mi
- Weston19 mi
- Ridgefield20 mi
- Fairfield21 mi
- Bridgeport25 mi
- Danbury26 mi
- Bethel26 mi
Free estimates in Greenwich
Call or send the estimate ticket. We set a time to see the site and put the price in writing.