Building a custom home in Surrey: lot size, the ALR, trees and permits

The lots are bigger in Surrey. That is the first thing every client says, and it is true. What they find out next is that Surrey is four or five different places to build, and the flat lot that looked easy from the car can be the one that needs the most engineering.

We build in Burnaby more than anywhere else, so this guide is a comparison: what changes between a 33-foot lot in Burnaby Heights and a half-acre in South Surrey. If you are also weighing the Fraser Valley, read it alongside our Langley guide and the Fraser Valley post.

Why Surrey instead of Burnaby

Space, mostly. Burnaby's teardown lots in the Heights and Capitol Hill are narrow and the setbacks leave a thin building envelope. Surrey has acreage, half-acre and quarter-acre lots in the older subdivisions, and standard suburban lots in the newer ones. A three-car garage, a real yard, a shop, a pool with lawn left over: those are Surrey conversations.

The trade is variety. A Burnaby lot behaves like a Burnaby lot. A Surrey lot might be on the ocean, beside farmland, on a slope, or on ground that used to be under the tide, and the site work changes with each one.

Four Surreys, four different builds

South Surrey is where the oceanfront lots are, and where the Crescent Beach floodplain sits. The City runs a separate Crescent Beach floodplain residential building permit, and the page says a geotechnical engineer is required for all construction within a floodplain in Surrey. The page says homes in the floodplain should meet the provincial flood construction level of 3.30 metres, measured to the top of slab or the underside of the floor joists, with garages and sheds allowed below it.

Cloverdale runs up against the agricultural lowlands. The City's Serpentine and Nicomekl lowlands page lists Cloverdale Town Centre among the areas that drain to the Nicomekl, and describes much of the lowland as close to sea level, historically an intertidal zone, reclaimed by farmers with dykes from the late 1800s. On the higher ground it is a normal suburban lot; near the lowland edge the soil report runs the show.

Fleetwood is the simplest of the four for a builder: serviced suburban lots with city water and sewer, and a build that runs like a Burnaby build with more room around it. The tree bylaw and the permit checklist still apply.

Panorama Ridge has the slope. Lots here step down toward the lowlands with views across them, and a hillside lot behaves like a hillside lot anywhere: geotechnical report, foundation design and drainage plan before the floor plan.

Larger lots, acreage and the ALR edge

Surrey has farmland inside the Agricultural Land Reserve, and the City keeps a page for owners who want to build on it. The City's page on building a house on the ALR says one single family dwelling is permitted on an ALR parcel, one secondary suite contained inside that dwelling may also be permitted, and any additional permanent dwelling for a family member who is not a farm worker is not a permitted use. An extra residence for farm help needs an application to the Agricultural Land Commission, referred through Surrey City Council, and then a rezoning.

The province's own rules sit on top of that. The Agricultural Land Commission's housing page caps a principal residence at 500 square metres without an application, and says a local government may apply more restrictive rules but cannot be more permissive.

Then there is the soil. Surrey's soil deposit and removal permit page says fill on ALR land for residential use that disturbs more than 0.1 hectare needs approval from the Land Commission as well as the City, and that the 0.1 hectare includes the house fill pad, the driveway, the septic field and anything else residential. On a lowland ALR lot where the house has to be raised on fill to reach the flood construction level, that area limit gets used up faster than owners expect.

Our advice on any Surrey acreage is the same as our Langley advice: confirm the ALR status on the City's COSMOS mapping tool and with the Commission before you sketch a floor plan.

The City of Surrey's permit process, compared with Burnaby

Surrey publishes what it wants. The single family dwelling permit page is the checklist: the application form, an owner authorization form where needed, the Homeowner Protection Office builder or owner-builder form, a current title search, a Schedule B (the letter of assurance that goes with each registered professional's sealed drawings), and one set of sealed plans covering site, foundation, floor, roof, cross sections, elevations, the truss layout, construction details and rainscreen details. Infill lots also need a topographical survey no older than six months and a storm outfall proposal.

One line on that page matters more than the rest: "Only complete applications will be accepted." The City also offers a digital tool called AI PreCheck that reviews permit drawings for zoning compliance before submission.

The building a house in Surrey page adds the rest of the sequence: check zoning, servicing, title restrictions, development permit areas and protected trees first; apply for the building permit and a driveway permit; expect emails after submission about additional permits, service upgrades and the trees; and pass the final inspection before anyone moves in. Each permit expires six months after the issue date. For anyone planning a basement, the page says basements must have a gravity storm service connection, so the designer has to confirm the service is deep enough before the plan is drawn.

On timing, the City's permitting timelines page listed a current processing time of 5.0 weeks for a residential building permit against a 10 week target, last updated September 8, 2026. The clock does not start at submission; for a single family dwelling it starts after referrals and a complete site servicing review.

Burnaby runs it differently. The New Home Construction page says all residential permit applications go through the City's My Permits Portal and paper is no longer accepted, and that Engineering pre-application approvals, with a topographical survey and a driveway drawing, come before the building permit; complete submissions "typically take about 15 business days for a review". Surrey folds the driveway and servicing review into the same intake. Burnaby splits it into a step of its own.

Surrey's permit desk rewards a complete submission. The timeline starts when the servicing review is done, so the fastest permit is the one that arrives with nothing missing.

Icon Projects Team

Surrey's tree bylaw is its own thing

Under the Surrey Tree Protection Bylaw overview, a protected tree is one with a trunk diameter over 30 centimetres measured at 1.4 metres above natural grade, or a multi-stemmed tree whose three largest stems add up to more than 30 centimetres, plus any tree of any size that was planted as a replacement or required for an earlier permit. Two replacement trees go in for each permit-sized tree removed, with a 1:1 ratio for black cottonwood and red alder, and on a construction site they are planted within 90 days of final occupancy, or at most three years from the permit.

Compare Burnaby, where the City's trees page protects any tree 20 centimetres or greater on a development site, so a Surrey lot can lose more small trees before the bylaw applies.

The process in Surrey runs through the building permit. The building site requirements page says the tree requirements must be complete before the City can issue the permit, recommends an arborist report with a site plan showing every protected tree and every neighbouring tree that could be affected, and states that permits will not be issued until the required tree barriers are installed, inspected and approved. Arborist supervision is required whenever work happens inside the protection zone of a protected tree, and securities are held per tree against damage during construction. The removing trees page lists construction as an accepted reason to apply, and shade, leaves, moss on the roof and a better view as reasons that will be refused.

Drainage, peat and clay in the lowlands

This is the part that surprises people coming from Burnaby. Burnaby's hard sites are the slopes. Surrey's hard sites are flat.

The Serpentine and Nicomekl lowlands page puts the lowland floodplain at 59 square kilometres inside a 334 square kilometre catchment, controlled by sea dams that close at high tide to keep salt water off the farmland. Ground that was intertidal a century ago drains slowly and, in our experience across the lowland edges, tends to be soft, wet and layered, with peat and clay in the profile. That is our observation from lowland sites, and it is why the geotechnical engineer goes to a lowland lot before the designer does.

What it changes on the build:

• The foundation is engineered around what the drill finds. Where the ground will not carry a standard footing, the engineer chooses between preloading the site, a thickened raft slab, or piles, and that decision comes before the floor plan because it can move the house on the lot.
• Water sets the floor level. In a floodplain the flood construction level sets the underside of the floor or the top of slab. The soil permit page notes that in the 200-year Nicomekl and Serpentine floodplain residential buildings are usually filled to that level or built over a crawlspace so the floor sits above it.
• Basements need a gravity storm connection. The City says so on the building a house page, and on low, flat ground the service is sometimes too shallow. Settle that with Engineering before anyone draws a lower floor.
• Surface drainage has nowhere to go on its own. Flat ground with a high water table needs grading, a place for roof and yard water to end up, and a foundation drainage design that assumes the ground stays wet all winter.

None of this applies to a Fleetwood lot on ordinary suburban ground. In Surrey the site tells you which build you are in.

SSMUH in Surrey

Surrey adopted its small-scale multi-unit housing zoning on July 8, 2024, according to the City's SSMUH zoning page. The old single family zones were replaced by a set of new residential zones named RA and R1 through R6, assigned by lot size, and the framework allows between three and four dwelling units on a lot depending on context, in houseplex, duplex, coach house, garden suite and secondary suite forms. On eligible lots between 281 and 4,050 square metres within 400 metres of a frequent bus stop, six units may be possible, and no off-street parking is required for small-scale multi-unit housing there.

The page also notes that on July 27, 2026, Council approved a full review of the SSMUH regulations and how they have been applied. The rules are in use, and they may move.

For a custom home client the practical effect is the same as in Burnaby: a single family house on a Surrey lot is now the low end of what the zoning allows, and a coach house or a suite is a design decision rather than a rezoning. Burnaby folded its residential districts into one R1 district. Surrey kept a ladder of zones tied to lot size, which is why the first step on any Surrey lot is the City's SSMUH zoning lookup tool.

What we do first on a Surrey lot

Pull the lot up on COSMOS and read the zone, ALR status, floodplain boundary and underground services. Walk it with the arborist and measure the trunks. If the ground is low, get the geotechnical engineer out before the designer. Then draw the house.

That order is the one we follow for every custom home we build, in Burnaby or anywhere. What Surrey changes is how often the answers to those first questions decide the design.

Frequently asked questions

How long does a single family building permit take in Surrey right now?

The City of Surrey's permitting timelines page listed a current processing time of 5.0 weeks for a residential building permit against an established target of 10 weeks, last updated September 8, 2026. That clock starts after referrals and a complete site servicing review, and it only applies to complete applications. Check the live page before you plan around it, because the City recalculates the figure from the last 30 days of permits.

What does the City of Surrey need for a single family dwelling permit application?

A complete application, or the City will not accept it. The single family dwelling permit page lists the application form and checklist, an owner authorization form if the applicant is not the owner, the Homeowner Protection Office builder or owner-builder form, a current title search, Schedule B for each registered professional's signed and sealed drawings, and one set of signed and sealed plans including site, foundation, floor, roof and cross sections, an elevation drawing, an engineered truss layout, construction details and rainscreen details. Infill lots also need a topographical survey no older than six months and a storm outfall proposal.

Can I build a custom home on ALR land in Surrey?

One single family dwelling is permitted on an ALR parcel in Surrey, and the City may also permit one secondary suite contained inside that dwelling. The Agricultural Land Commission caps a principal residence at 500 square metres without an application, and a local government may apply stricter rules but cannot be more permissive. Any extra dwelling for a family member is not a permitted use; an additional residence is only considered when it is necessary for farm help.

Which trees are protected under Surrey's tree bylaw?

A tree with a trunk diameter over 30 centimetres measured at 1.4 metres above natural grade, or a multi-stemmed tree whose three largest stems add up to more than 30 centimetres, plus any tree of any size that was planted as a replacement tree or required for a previous permit. That threshold is looser than Burnaby's, where any tree 20 centimetres or greater is protected on a development site, so a Surrey lot can lose more trees before the bylaw applies.

Do I need a tree cutting permit to build a house in Surrey?

If a protected tree has to come down, yes, and the tree requirements have to be finished before the City issues the building permit. The City assigns an arborist to the file, reviews the arborist report and site plan, and will not issue the permit until the required tree protection barriers are installed, inspected and approved. Two replacement trees are required for each permit-sized tree removed, with a 1:1 ratio for black cottonwood and red alder.

Does Surrey require a geotechnical engineer for a new house?

For any construction inside a floodplain in Surrey, yes: the City's Crescent Beach floodplain permit page states that a geotechnical engineer is required for all construction within a floodplain. Outside a floodplain, the single family permit page says a registered professional may be required to provide a Schedule B with signed and sealed drawings, and the lowland soils around the Serpentine and Nicomekl rivers are where we bring a geotechnical engineer in whether the City asks or not.

How many units can I build on a Surrey lot under SSMUH?

Surrey's SSMUH zoning, in effect since July 8, 2024, allows between three and four dwelling units on a lot depending on the context, using houseplex, duplex, semi-detached, coach house, garden suite and secondary suite unit types. Six units may be possible on eligible lots between 281 and 4,050 square metres that sit within 400 metres of a frequent bus stop, and no off-street parking is required there. On July 27, 2026 Council approved a full review of the SSMUH regulations, so check the City's page for the current state.

Is building in Surrey easier than building in Burnaby?

Different, and easier in some ways. Surrey lots are larger on average, the tree bylaw's protected size is higher, and the permit desk publishes its live processing times. Burnaby's R1 lots are narrower and tighter, its tree threshold on a development site is lower, and its Engineering pre-application adds a step before the building permit. What Surrey adds is variety: the ALR edge, floodplains with a flood construction level, and lowland soils that decide the foundation.