eco+historical started off in 2008 with the project to rehab, “green” and expand a 1922 Edwardian located in Cole Valley – a San Francisco neighborhood that feels more like a small town than part of a city.

It looked a bit like a potato from the outside and had undergone a budget rehab in the early 2000′s to add a lower level guest suite and an Ikea kitchen plus a contemporary (but cheap) paint job, but there were many nice details, from the unique wainscot to the stair railing “arrow” cut-outs, that added a lot of personality and were well worth preserving.

Over the course of the next year or so, the home was expanded with a new 3rd story with three bedrooms and two baths plus a lovely new kitchen, family room, and eco paint, finishes, materials and systems throughout.

Despite looking like a potato, the existing floor plan was excellent with great Living/Dining/Kitchen flow and it was clear that we had an opportunity to turn this home into the perfect family and entertaining home. What the house really needed was enough space for a Family Room, a modern Master Bedroom suite and a couple of kids’ bedrooms.
Original Plans

To accomplish those goals, we simply converted the original two bedrooms on the main level of the home into a Family Room off of the kitchen and added the 3rd story as a living level with a master bedroom, bath, huge closet and front deck plus 2 decent-sized kids bedrooms, a kids’ bath and a laundry area.
New Plans

We worked hard to keep and restore the lovely original floors, wainscot, fireplace and stairway details and set to work to address issues like the:
- lack of insulation that had left the home very cold and drafty
- ceiling stains from a leaky roof
- the old and inefficient furnace that couldn’t keep up with the drafts
On top of those issues, the home also needed new paint, a new roof, a kitchen with more storage capacity and efficient appliances, efficient heating, and low-flow water fixtures.
In order to build the 3rd story, we had to open up most of the 2nd story walls to upgrade the structure, freeing us to fully insulate the home, re-wire it, add nice features like CAT5, audio and video, and repaint with zero-VOC finishes.

In coming up with the specifications for the rehab, we broke the concept of “Green” down into three component parts:
- Health
- Sustainability
- Efficiency
Health
To assure a healthy living environment, we wanted to eliminate toxins and improve air quality while utilizing formaldehyde-free materials and zero-VOC or low-VOC paints and finishes. This meant:
Removing
- Lead-painted doors and trim
- Asbestos duct insulation
- Plaster ceilings and walls that could harbor mold
- Fluorescent lighting that includes Mercury
and
Adding
- Paint - Zero-VOC paint on all walls and ceilings
- Insulation - Formaldehyde-free insulation
- Cabinets - Use formaldehyde-free plywood in custom cabinetry
- Bath Fans - Automatic motion-activated continuous-circulation fans improve air quality
Sustainability
To minimize the impact on the planet, we kept whatever flooring and materials we could in the house and then used Forest Stewardship Council (FSC) Certified lumber to assure that the lumber was all harvested from sustainably-managed forests.
- Lumber - FSC Certified
- Cabinets - Sustainably-harvested plywood
- Counters - Slate-like Richlite (layered paper fiber in zero-VOC non-toxic resin)
Efficiency
To keep the carbon and water footprint of the home down to a minimum, we completely insulated the home, created separate zones for heating each floor (so you only heat the area you’re in), updated the furnace, utilized a Hot Water Heat Pump to achieve water heating efficiency nearly twice as good as an on-demand hot water heater, put in low-flow toilets, faucets, and showerheads, EnergyStar appliances, better-than-fluorescent non-toxic dimmable LED lighting, and motion-sensor dimmers throughout to automatically turn off lights in unused rooms.
- Lighting - Dimmable LED lighting in halls and kitchen
- Lighting Control - Motion-sensor dimmers throughout
- Insulation - Formaldehyde-free in-between all walls, and floors
- Windows - Argon-filled double-pane Low-E wood windows
- Furnace - 95% Efficient new gas furnace
- HVAC - Added separate zones for each floor
- Faucets, Toilets - All low-flow
- Appliances - EnergyStar-rated
Despite being near the corner of Frederick and Cole Streets with its traffic and bus lines, the home became almost eerily quiet and peaceful thanks to newly-insulated walls. The lead paint that once was there was gone, as was the remains of the asbestos insulation on the heating ducts. The original home details were retained everywhere possible and were reproduced where the original detailing could not be retained. All of the original floors were retained and refinished with water-based low-VOC floor finishes, and the original fireplace received a new chimney and flue, bringing it up to code.

Check out the marketing site at www.394frederick.com plus the full Before and After galleries…


7 comments
Comments feed for this article
July 15, 2010 at 5:19 pm
Added space. Same footprint. « eco+historical
[...] also did this with our project at 394 Frederick Street…and we did indeed have to upgrade the foundation and open up the existing 1st and 2nd story [...]
July 15, 2010 at 5:29 pm
Check out summary of our first project: 394 Frederick! « eco+historical
[...] WordPress to put together the project summary and before/after galleries for our first project at 394 Frederick Street. We started construction in Feb 2008 and completed it in Apr 2009. Although we were proud of [...]
July 25, 2010 at 4:36 pm
Suzanne
Josh,
It’s a weird place to ask this question, but I’m following up on this post and your letter in the June edition of San Francisco Magazine, which I picked up on holiday. Before then I had never heard of hot water heat pumps. It caught my attention since I live in a 1970′s condo with little ability to improve insulation etc BUT a 40 gallon electric hot water heater gobbling up BTU’s daily. I saved the letter, came home to do some research…and was stymied.
While these products seem to be more generally available in Australia and other places I haven’t been able to identify brands (other than the GE model you mentioned) of new heaters or the add-ons you mentioned in your letter.
What brands have you tried or are you aware of? I would appreciate any information.
Thanks in advance
Suzanne
Victoria, BC
July 26, 2010 at 1:44 pm
mrfrancophile
Suzanne,
Well, a couple of years ago, the concept of a heat pump hot water heater was brand new. At the time, I selected the Airtap from Airgenerate to place on top of a new standard hot water heater (or on top of an existing hot water heater) since that was pretty much my only option. There were no complete heat pump water heaters on the market at that time – or at least that I could find.
But the rest of the water heater market is starting to catch on. In addition to GE’s new Geospring hybrid heat pump hot water heater, other mainstream hot water heater manufacturers are jumping on board. Late last year Rheem came out with the HP-50 hot water heat pump and another leading brand, A.O.Smith came out with their Voltex line. So the answer is that there are options for people with existing hot water tanks (Airgenerate) and a variety of options for people looking for new tanks (GE, Rheem, A.O.Smith) but you may have to look around a bit to find a local dealer since most plumbing folks just don’t know about them yet.
Here in the US, Home Depot sells the GE and the Rheem, but if you’re comfortable doing it, you may just be able to buy it online and find a local plumber to install it. I often do that for my projects. While I’ve specified the GE Geospring for our next two projects, I don’t need to buy them for another 10-12 months, so I’ll keep an eye on the market and possibly change to the Rheem or another product (or just stick w/GE) when the time comes to make my purchase based upon pricing, owner reviews online, etc.
Good luck!
July 26, 2010 at 3:02 pm
Suzanne
Thank you! As with many ideas you see this and wonder why it isn’t absolutely standard. I’ve recently been looking into heat pump equipped clothes dryers, which fall into the same category.
July 28, 2010 at 8:19 pm
Now you’re in hot water… « eco+historical
[...] we started our projects at 394 Frederick St. and 173 Downey St., there was one manufacturer for recessed LED lighting (Permlight), one [...]
December 18, 2011 at 10:06 pm
Green Insulation (for a little less “green” $) « eco+historical
[...] our last couple of projects in Cole Valley, 394 Frederick Street and 173 Downey Street, we wanted insulation that was effective and tight yet VOC (volatile organic [...]