studio apxe completes energy generating house in bulgaria
original content
jan 26, 2014
studio apxe completes energy generating house in bulgaria

studio apxe completes efficient plus energy house in bulgaria
images © missirkov/bogdanov
all images courtesy of studio apxe





situated on the south green slopes of bulgaria’s vitosha mountain region, the sustainable house by bulgarian firm studio apxe generates more energy than it consumes with an integrated photovoltaic system on its roof. the single floor dwelling sits comfortably in its landscape – the main volume is positioned over the garage, which is dug into the rock at street level. the service spaces and carport area are separated from the main mass, solving many technological and energy problems with thermal bridges. constructed using a lightweight wooden envelope, the ecological nature of the exterior also offers a warm aesthetic. the framework consists of reinforced concrete for the foundations, supporting frames and roof of the garage, while the outer envelope incorporates steel and timber structures. laminated wooden beams, columns and a pergola with built-in shading help to form the overall design.



‘plus energy house kladnica’
video courtesy of georgi nikolov


the environmental house produces its own energy through solar panels installed on the roof


designed in accordance with the passive house standard, the building reached an excellent air-tightness level


glazing on the south is protected against overheating during the summer by external blinds and awnings


a spacious green roof and conservatory face the view of the surrounding mountains


the outdoor stone barbecue and sheltered summer kitchen


view from the forest


wooden cladding is used for the lightweight façade


local stone masonry


the building’s envelope incorporates laminated timber and steel construction


interior views of the spacious and sunny living room


‘passive house kladnica apxe’
video courtesy of georgi nikolov



project info:


location: delta hill, village of kladnica, near sofia, bulgaria
designer: studio apxe ltd.
design team: georgi nikolov (lead architect), silvia draganova, boshko takov
type of building: individual residential building with separate apartment
type of construction: mixed construction: load-bearing reinforced concrete framework with light-weight wood envelope
treated floor area: 416 m2
total built-up area: 971 m2
project & construction management: studio apxe ltd.
awards: isover energy efficiency the best of awards
construction companies: k v engineering; schloss; ng technology, abyu engineering, bultherm, muharski, dsv, citybuild studio, filkab and many more;
duration of construction: may 2012 – september 2013
photo credits: missirkov/bogdanov



designboom has received this project from our ‘DIY submissions‘ feature, where we welcome our readers to submit their own work for publication. see more project submissions from our readers here.

comments policy
login with designboom
designboom's comment policy guidelines
generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
the correction is at the discretion of the post editor and may not happen immediately.

what if you disagree with what we or another commenter has to say?
let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

- please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
- please don't personally insult the writers or your fellow commenters.
- please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
- please don't include your website or e-mail address in your comments for the purpose of self-promotion.
- please respect jury verdicts and do not discuss offensively on the competition results
(there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
the best 100-200 entries too.)

a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.

product library