What is the ER-3 zone, and where does it apply?
The Centre Plan is HRM's land-use plan for the older parts of Halifax and Dartmouth, and ER-3, Established Residential 3, is one of its zones. Its areas lie on the Halifax peninsula and in Dartmouth. It is the most intense of HRM's Established Residential zones, the one that reaches small multi-unit buildings, and under its density table of April 2024 it allows a building of up to eight units on a single lot as of right: without a rezoning, a development agreement or a variance.
Read from the municipality's parcel and zoning records, the zone covers 14,774 lots as of 24 October 2026: 8,063 with a Halifax civic address, 6,205 with a Dartmouth one and 506 with no civic address on the record. Every one of them is on the ER-3 page's map, with its area and the units the zone allows on it.
A lot in another zone is a different question, set by that zone, its overlays and the site, and what a feasibility study answers is the page for it.
What does the lot's area allow?
The lot's area sets the count. HRM's ER-3 table allows four units with a backyard suite under 375 m², then one more unit at 375, 450, 525 and 600 m², so a lot of 600 m² or more allows eight, and a larger lot still allows eight (HRM's ER-3 density table, April 2024, in force for the permits the record holds).
The record's own ER-3 permits bear the table out. The six units finished in the spring of 2026 at 80 Cannon Terrace sit on a lot of 469 m², and the eight rising at 46 Primrose Street on a lot of 1,273 m², both in Dartmouth, each permit on the municipal record (the ER-3 page's record, as of 15 October 2026).
The count is the zone's answer, not yet the lot's. Frontage, setbacks, height and coverage still apply: a multi-unit dwelling needs 10.7 m of frontage, the height is 11 m, and the setbacks and coverage are the zone's too (HRM's Centre Plan, the ER-3 zone, as the ER-3 page cites it on 24 October 2026). A lot can have the area for eight and still carry fewer once those rules meet its shape, which is why the reading of a lot is the lot's.
So what does your lot allow? Fig. 01 answers by area, and counts how many of the zone's 14,774 lots share each answer, as of 24 October 2026.
| Eight units600 m² and over | 12,246 |
|---|---|
| Seven units525 to 600 m² | 1,060 |
| Six units450 to 525 m² | 594 |
| Five units375 to 450 m² | 305 |
| Four unitsunder 375 m² | 569 |
HRM's ER-3 density table, April 2024, in force for the permits the record holds; the municipality's parcel and zoning records read on 24 October 2026; 506 lots carry no civic address on the record. measured As of 24 October 2026.
What does the house on the lot change?
What stands on a lot today does not change the zone's count; it decides when a new building can start. Pick a lot on the ER-3 page's map and its card shows what the record holds for it: the year the building on it was built, its style and its living units, or no building on the record (the municipality's parcel records and the provincial assessment roll, as of 24 October 2026).
The building the reading prices is a new one, so the house is taken down before the build starts. Two things about the house change the date or the cash, as the ER-3 page sets them out:
- A tenant in the house. Nothing starts until the house is empty: Helio does not approach a tenanted house, and the law on ending a tenancy for demolition sets the date.
- An existing mortgage on the lot. Its balance joins the owner's cash during the build, and it is read from the register before anything is signed.
An owner who keeps the house keeps the lot as it is, and what the zone allows on it stays the same.
What is the lot worth as a house, and to a builder?
As a house, a lot is worth what a buyer of the house will pay. To a builder it is worth something else, set by the building it can carry: a builder pays for a lot what leaves him his margin after the building's sale. A builder's letter asking to buy your lot is that arithmetic done from his side, and an owner who already holds the lot keeps that upside.
Whether the upside is worth the build is arithmetic too, and the ER-3 page runs it on your inputs: the lot's value today, Dartmouth or the peninsula, and the monthly rent on a two-bedroom. It sets the lot sold today, before tax, against the cash the build asks beyond the lot and the equity a finished eight leaves at lease-up, each answer looked up in a table of cases run in advance, nothing computed on the page (the ER-3 page's comparison, as of 15 October 2026).
At the rents older buildings ask, the numbers say sell. At new-building rents, they say build. The reading makes the same comparison on your own lot.
Where the numbers say sell, the reading says sell.
How do I find my lot and ask for its reading?
Open the map on the ER-3 page, type your street and tap your lot. Its card shows the address, the lot's area, what stands on it today and the units the zone allows on it, with the lot's PID, and from the card you can ask for the reading of that lot. You can also type the address straight into the request.
The reading is free, by e-mail, within one business day, and it says:
- what the lot allows;
- what a building on it costs, everything in;
- what you would put in, and what you would own;
- whether the numbers say build or sell.
Your lawyer and accountant read everything before anything is signed, and nothing is paid before the contracts.
What is not on this page?
No owner, value or sale of any lot is published, here or on the ER-3 page's map. Each lot shows its address where the record has one, its area, what stands on it and the units the zone allows on it, and nothing about who owns it, what it is assessed at or what it last sold for.
The figures on this page are the zone's and the record's, each with its source and its day. What one lot allows once its frontage, its shape and its house are read, what a building on it would cost and whether to build are the reading's, and the reading goes by e-mail to the person who asks for it.
What Helio does, and what happens next
The reading of your lot comes from the ER-3 programme, free, by e-mail within one business day. It says what the lot allows, what a building on it costs everything in, what you would put in and own, and whether the numbers say build or sell.
If the numbers say build, Helio brings the financing through a broker and stays on the file to the day the units lease, and the builder partner designs the building to its template and builds it with its own crews at a price stated in its contract. Neither takes a share of your building, and nothing is paid before the contracts.
Pick your lot on the ER-3 page's map, or type its address, and the reading reaches you by e-mail within one business day.
Send me the reading for my lotWhat a feasibility study answers
For a parcel in any zone: what it can support, what should be built, whether the money closes, and one answer: build, sell, or wait.
How development works in Halifax
The six interdependent stages from parcel to occupancy, and where each one decides whether the building gets built.
Does our project qualify for MLI Select
The CMHC program behind the insured loan on the ER-3 page, and what its points do to the loan.
Figures in this guide carry their date and source; method and limits of the underlying map data are on the methodology page. Spotted an error? Correct a record.